Inspection of ECM and Its Circuits - Suzuki Jimny Workshop Manual
1A
Inspection of ECM and Its Circuits
ECM and its circuits can be checked at ECM connectors by measuring voltage, pulse signal and resistance.
CAUTION:
ECM cannot be checked by itself. It is strictly prohibited to connect voltmeter or ohmmeter to ECM with connector disconnected from it.
Voltage Check
1)
Remove ECM (1) from vehicle body referring to
Engine Control Module (ECM) Removal and Installation:M13A
.
2)
Check voltage and/or pulse signal at each terminal of connectors (2) connected, using voltmeter (3) and oscilloscope (4).
NOTE:
•
As each terminal voltage is affected by the battery voltage, confirm that it is 11 V or more when ignition switch is ON.
• Voltage with asterisk (*) cannot be measured by voltmeter because it is pulse signal. Check it with oscilloscope if necessary.
• Voltage with asterisk (*) cannot be measured by voltmeter because it is pulse signal. Check it with oscilloscope if necessary.
Viewed from harness side
| 1. | ECM | 2. | ECM connectors |
ECM Terminal Voltage Values Table
| Terminal No. | Wire color | Circuit | Normal Voltage | Condition | Condition |
|---|---|---|---|---|---|
| E116-1 | — | — | — | — | — |
| E116-2 | — | — | — | — | — |
| E116-3 | — | — | — | — | — |
| E116-4 | — | — | — | — | — |
| E116-5 | — | — | — | — | — |
| E116-6 | — | — | — | — | — |
| E116-7 | — | — | — | — | — |
| E116-8 | — | — | — | — | — |
| E116-9 | — | — | — | — | — |
| E116-10 | — | — | — | — | — |
| E116-11 | — | — | — | — | — |
| E116-12 | — | — | — | — | — |
| E116-13 | — | — | — | — | — |
| E116-14 | RED/WHT | Rear defogger switch signal | 10 – 14 V | Ignition switch turned ON, rear defogger switch ON. | — |
| 0 – 1 V | Ignition switch ON, rear defogger switch OFF. | ||||
| E116-15 | — | — | — | — | — |
| E116-16 | GRN | ABS signal (if equipped) | 10 – 14 V | Ignition switch turned ON. | — |
| E116-17 | — | — | — | — | — |
| E116-18 | — | — | — | — | — |
| E116-19 | — | — | — | — | — |
| E116-20 | — | — | — | — | — |
| E116-21 | — | — | — | — | — |
| E116-22 | — | — | — | — | — |
| E116-23 | — | — | — | — | — |
| E116-24 | — | — | — | — | — |
| E116-25 | — | — | — | — | — |
| E116-26 | — | — | — | — | — |
| E116-27 | — | — | — | — | — |
| E116-28 | — | — | — | — | — |
| E116-29 | — | — | — | — | — |
| E116-30 | — | — | — | — | — |
| E116-31 | PNK | Test switch terminal | 10 – 14 V | Ignition switch turned ON. | — |
| Terminal No. | Wire color | Circuit | Normal Voltage | Condition | Condition |
|---|---|---|---|---|---|
| E118-1 | PPL/YEL | Malfunction indicator lamp | 10 – 14 V | Engine running. | — |
| 0 – 1 V | Ignition switch turned ON with engine stop. | ||||
| E118-2 | RED/GRN | Immobilizer indicator lamp | 10 – 14 V | Engine running. | — |
| 0 – 1 V | Ignition switch turned ON with engine stop. | ||||
| E118-3 | — | — | — | — | — |
| E118-4 | — | — | — | — | — |
| E118-5 | BLU/BLK | Main power supply | 10 – 14 V | Ignition switch turned ON. | — |
| E118-6 | BLU/BLK | Main power supply | 10 – 14 V | Ignition switch turned ON. | — |
| E118-7 | WHT | CAN (low) communication line (active low signal) to TCM |
*0.5 – 2.5 V
(Refer to Reference waveform No.1 .) |
Ignition switch turned ON with engine stop. | CAN communication line signal is pulse. Pulse signal is displayed with a regular frequency which varies depending on engine condition. |
| E118-8 | RED | CAN (high) communication line (active high signal) to TCM |
*2.5 – 4.7 V
(Refer to Reference waveform No.1 .) |
||
| E118-9 | GRN/WHT | Stop lamp switch signal | 0 – 1 V | Ignition switch turned ON, stop lamp not lighted up. | — |
| E118-10 | YEL/BLK | Serial communication line of data link connector 5 V | 4 – 5.5 V | Ignition switch turned ON. | — |
| E118-11 | PNK/GRN | Serial communication line of data link connector 12 V | 8 – 14 V | Ignition switch turned ON. | — |
| E118-12 | BRN | Engine revolution signal for tachometer | 0 – 0.8 V | Ignition switch turned ON with engine stop. | — |
|
*0 – 1 V
↑ ↓ 8 – 14 V (Refer to Reference waveform No.2 and Reference waveform No.3 .) |
While engine running |
Output signal is pulse. Pulse frequency varies depending on engine speed.
(2 pulses are generated at 1 crankshaft revolution.) (3000 r/min. = 100 Hz) |
|||
| E118-13 | BLU/ORN | Heater blower switch signal | 10 – 14 V | Ignition switch turned ON, heater blower switch selected at OFF. | — |
| 0 – 1 V | Ignition switch turned ON, heater blower switch selected at 3rd speed position or more. | ||||
| E118-14 | YEL/RED | Fuel level sensor signal | 0 – 6 V | Ignition switch turned ON. Voltage depends on fuel level. | — |
| E118-15 | WHT/RED | A/C evaporator outlet air temp. sensor signal (if equipped) | 3.4 – 3.7 V | Ignition switch turned ON at A/C evaporator outlet temperature 0 °C (32 °F). | — |
| 2.5 – 2.8 V | Ignition switch turned ON at A/C evaporator outlet temperature 15 °C (59 °F). | ||||
| 1.7 – 2.0 V | Ignition switch turned ON at A/C evaporator outlet temperature 30 °C (86 °F) | ||||
| E118-16 | WHT | Power source for ECM internal memory | 10 – 14 V | Ignition switch turned ON. | — |
| E118-17 | — | — | — | — | — |
| E118-18 | — | — | — | — | — |
| E118-19 | — | — | — | — | — |
| E118-20 | — | — | — | — | — |
| E118-21 | — | — | — | — | — |
| E118-22 | — | — | — | — | — |
| E118-23 | — | — | — | — | — |
| E118-24 | — | — | — | — | — |
| E118-25 | — | — | — | — | — |
| E118-26 | — | — | — | — | — |
| E118-27 | — | — | — | — | — |
| E118-28 | BLK/WHT | Ignition switch signal | 0 – 1 V | Ignition switch turned OFF. | — |
| 10 – 14 V | Ignition switch turned ON. | ||||
| E118-29 | — | — | — | — | — |
| E118-30 | GRN/WHT | A/C switch signal (if equipped) | 10 – 14 V | Ignition switch turned ON, A/C switch and heater blower switch selected at OFF. | — |
| 0 – 1 V | Ignition switch turned ON, A/C switch ON and heater blower switch selected 1st position or more. | ||||
| E118-31 | — | — | — | — | — |
| E118-32 | BLK/WHT | ECT sensor signal for combination meter |
*0 – 0.6 V
↑ ↓ 10 – 14 V (Refer to Reference waveform No.4 .) |
Ignition switch turned ON. |
Output signal is 1 Hz active low duty pulse. Duty ratio varies depending on ECT.
ECT –40 °C (–40°F) = 10% ON duty ECT 120 °C (248 °F) = 90% ON duty |
| E118-33 | RED/YEL | Lighting switch signal | 10 – 14 V | Lighting switch ON. | — |
| 0 – 1 V | Lighting switch OFF. | ||||
| E118-34 | — | — | — | — | — |
| E118-35 | BLK/BLU | Ground for A/C evaporator outlet air temp. sensor (if equipped) | Below 0.3 V | Ignition switch turned ON. | — |
| Terminal No. | Wire color | Circuit | Normal Voltage | Condition | Condition |
|---|---|---|---|---|---|
| E119-1 | BLK | Ground for ECM | Below 0.3 V | Ignition switch turned ON. | — |
| E119-2 | BLK/RED | Oil control valve ground | Below 1.0 V | Ignition switch turned ON. | — |
| E119-3 | YEL/RED | Oil control valve output |
*0 – 0.6 V
↑ ↓ 10 – 14 V (Refer to Reference waveform No.5 and Reference waveform No.6 .) |
At the moment of the ignition switch turned ON. | Output signal is active high pulse. Duty ratio varies depending on vehicle condition. |
| E119-4 | WHT/BLK | Fuel injector No.4 output | 10 – 14 V | Ignition switch turned ON. | — |
|
*0 – 0.6 V
↑ ↓ 10 – 14 V (Refer to Reference waveform No.7 and Reference waveform No.8 .) |
Engine running at idling with after warming up engine. | Output signal is active low pulse. Pulse frequency varies depending on engine speed. | |||
| E119-5 | WHT/GRN | Fuel injector No.3 output | 10 – 14 V | Ignition switch turned ON. | — |
|
*0 – 0.6 V
↑ ↓ 10 – 14 V (Refer to Reference waveform No.7 and Reference waveform No.9 .) |
Engine running at idling with after warming up engine. | Output signal is active low pulse. Pulse frequency varies depending on engine speed. | |||
| E119-6 | RED/GRN | Fuel injector No.2 output | 10 – 14 V | Ignition switch turned ON. | — |
|
*0 – 0.6 V
↑ ↓ 10 – 14 V (Refer to Reference waveform No.7 and Reference waveform No.10 .) |
Engine running at idling with after warming up engine. | Output signal is active low pulse. Pulse frequency varies depending on engine speed. | |||
| E119-7 | RED/WHT | Fuel injector No.1 output | 10 – 14 V | Ignition switch turned ON. | — |
|
*0 – 0.6 V
↑ ↓ 10 – 14 V (Refer to Reference waveform No.7 , Reference waveform No.11 and Reference waveform No.30 .) |
Engine running at idling with after warming up engine. | Output signal is active low pulse. Pulse frequency varies depending on engine speed. | |||
| E119-8 | LT GRN/RED | Output of 5 V power source for TP sensor and MAP sensor | 4.5 – 5.5 V | Ignition switch turned ON. | — |
| E119-9 | RED | Knock sensor signal |
2 – 3 V
(Refer to Reference waveform No.12 and Reference waveform No.13 .) |
Ignition switch turned ON. | — |
| Engine running at 4000 r/min. with after warming up engine. | |||||
| E119-10 | WHT | CMP sensor signal | 0 – 1 V or 4 – 5 V | Ignition switch turned ON. | — |
|
*0 – 0.6 V
↑ ↓ 4 – 5 V (Refer to Reference waveform No.14 and Reference waveform No.15 .) |
Engine running at idling with after warming up engine. | Sensor signal is pulse. Pulse frequency varies depending on engine speed. (6 pulses are generated at 1 camshaft revolution.) | |||
| E119-11 | RED | Oxygen signal of heated oxygen sensor-1 | 0 – 1 V | Ignition switch turned ON. | — |
|
*Deflects between over 0.5 V and under 0.45 V
(Refer to Reference waveform No.16 and Reference waveform No.17 .) |
While engine running at 2,000 r/min. for 1 min. or longer after warmed up engine. | ||||
| E119-12 | — | — | — | — | — |
| E119-13 | — | — | — | — | — |
| E119-14 | YEL/GRN | Mass air flow (MAF) sensor signal | 0.5 – 1.5 V | Ignition switch turned ON with engine stops. | — |
|
1.5 – 2.0 V
(Refer to Reference waveform No.18 .) |
When engine running at specified idle speed after warming up engine. | ||||
| E119-15 | GRN | Manifold absolute pressure (MAP) sensor signal |
Approx. 1.8 V
(Refer to Reference waveform No.19 .) |
Ignition switch turned ON with barometric pressure at 100 kPa, 760 mmHg. | — |
|
Approx. 4.2 V
(Refer to Reference waveform No.20 .) |
When engine racing, after warming up engine with barometric pressure at 100 kPa, 760 mmHg. | ||||
| E119-16 | GRN/BLK | Engine coolant temp. (ECT) sensor signal | 3.3 – 3.8 V | Ignition switch turned ON, ECT at 0 °C, 32 °F. | — |
| 1.38 – 1.72 V | Ignition switch turned ON, ECT at 50 °C, 122 °F. | ||||
| 0.40 – 0.53 V | Ignition switch turned ON, ECT at 100 °C, 212 °F. | ||||
| E119-17 | LT GRN/BLK | Intake air temp. (IAT) sensor signal | 3.18 – 3.67 V | Ignition switch turned ON, IAT at 0 °C, 32 °F. | — |
| 1.32 – 1.65 V | Ignition switch turned ON, IAT at 40 °C, 104 °F. | ||||
| 0.46 – 0.60 V | Ignition switch turned ON, IAT at 80 °C, 176 °F. | ||||
| E119-18 | — | — | — | — | — |
| E119-19 | YEL/GRN | Vehicle speed sensor signal |
*0 – 1 V
↑ ↓ 10 – 14 V (Refer to Reference waveform No.21 .) |
Vehicle running. | Sensor signal is pulse. Pulse frequency varies depending on vehicle speed. (21 pulses are generated par sec. at 30 km/h, 19 mph.) (2548 pulses/km) |
| E119-20 | — | — | — | — | — |
| E119-21 | — | — | — | — | — |
| E119-22 | — | — | — | — | — |
| E119-23 | — | — | — | — | — |
| E119-24 | — | — | — | — | — |
| E119-25 | — | — | — | — | — |
| E119-26 | — | — | — | — | — |
| E119-27 | — | — | — | — | — |
| E119-28 | BLK/BLU | Ground for sensors | Below 0.3 V | Ignition switch turned ON. | — |
| E119-29 | — | — | — | — | — |
| E119-30 | GRN/RED | CKP sensor signal | 0 – 1 V or 4 – 5 V | Ignition switch turned ON. | — |
|
*4 – 5 V
↑ ↓ 0 – 0.6 V (Refer to Reference waveform No.14 and Reference waveform No.15 .) |
Engine running at idling with after warming up engine. | Sensor signal is pulse. Pulse frequency varies depending on engine speed. (30 (36–6) pulses are generated at 1 crankshaft revolution.) | |||
| E119-31 | — | — | — | — | — |
| E119-32 | YEL/BLK | Ground for MAF sensor | Below 0.3 V | Ignition switch turned ON. | — |
| E119-33 | WHT | Oxygen signal of heated oxygen sensor-2 | 4 – 5 V | Ignition switch turned ON. | — |
|
*Deflects between over 0.5 V and under 0.45 V
(Refer to Reference waveform No.22 .) |
While engine running at 2,000 r/min. or more after vehicle running over 30 km/h, 19 mph for 5 min. | ||||
| E119-34 | LT GRN | Throttle position (TP) sensor signal |
0.5 – 1.0 V
(Refer to Reference waveform No.19 .) |
Ignition switch turned ON and throttle valve at idle position with warmed engine. | — |
|
3.4 – 4.7 V
(Refer to Reference waveform No.20 .) |
Ignition switch turned ON and throttle valve at full open position. | ||||
| E119-35 |
BLK/RED
(A/T) |
Starting motor signal | 0 – 1 V | Ignition switch turned ON. | — |
|
BLK/YEL
(M/T) |
6 – 14 V | While engine cranking. |
| Terminal No. | Wire color | Circuit | Normal Voltage | Condition | Condition |
|---|---|---|---|---|---|
| E117-1 | BLK | Ground for ECM | Below 0.3 V | Ignition switch turned ON. | — |
| E117-2 | BLK | Ground for ECM | Below 0.3 V | Ignition switch turned ON. | — |
| E117-3 | RED/BLU | Heater output of heated oxygen sensor-2 | 0 – 14 V | Ignition switch turned ON. | — |
|
0 – 1 V
(Refer to Reference waveform No.22 .) |
Engine running at idling after vehicle running over 30 km/ h, 19 mph for 5 min. | ||||
| E117-4 | PNK/BLK | Heater output of heated oxygen sensor-1 | 0 – 14 V | Ignition switch turned ON. | — |
|
*0 – 2 V
↑ ↓ 10 – 14 V (Refer to Reference waveform No.16 and Reference waveform No.17 .) |
Engine running at idling with after warming up engine. | Output signal is active low duty pulse. Duty ratio varies depending on engine condition. | |||
| E117-5 | — | — | — | — | — |
| E117-6 | — | — | — | — | — |
| E117-7 | — | — | — | — | — |
| E117-8 | GRN/YEL | IAC valve output |
*0 – 2 V
↑ ↓ 8 – 14 V (Refer to Reference waveform No.23 .) |
Ignition switch turned ON. | Output signal is active low duty pulse. Duty ratio varies depending on vehicle condition. |
|
*0 – 2 V
↑ ↓ 8 – 14 V (Refer to Reference waveform No.24 .) |
Engine running at idling with after warming up engine. | ||||
| E117-9 | — | — | — | — | — |
| E117-10 | — | — | — | — | — |
| E117-11 |
PNK/BLU
(Left-hand steering vehicle) |
A/C compressor relay output (if equipped) | 10 – 14 V | Engine running, A/C switch OFF and heater fan switch OFF position. | — |
|
PNK
(Right-hand steering vehicle) |
0 – 1 V | Engine running, A/C switch ON and heater fan switch 1st position or more. | |||
| E117-12 | PNK/BLK | A/C condenser fan relay output (if equipped) | 10 – 14 V | Engine running, A/C switch OFF and heater fan switch OFF position. | — |
| 0 – 1 V | Engine running, A/C switch ON and heater fan switch 1st position or more. | ||||
| E117-13 | BLU/RED | EVAP canister purge valve output | 10 – 14 V | Ignition switch turned ON. | — |
|
*0 – 0.6 V
↑ ↓ 8 – 14 V (Refer to Reference waveform No.25 .) |
Vehicle running at 20 km/h, 12 mph with after warming up engine. | Output signal is active low duty pulse. Duty ratio varies depending on vehicle condition. | |||
| E117-14 | WHT/GRN | Fuel pump relay output | 0 – 2.5 V | For 2 sec. from the time is ignition switch turned to ON or while engine is running. | — |
| 10 – 14 V | On and after 2 sec. from the time is ignition switch turned to ON or while engine is stop. | ||||
| E117-15 | BLU | Main power supply relay output | 10 – 14 V | Ignition switch turned OFF. | — |
| 0 – 2 V | Ignition switch turned ON. | ||||
| E117-16 | GRY/BLU | EGR valve (stepper motor coil 3) output | 10 – 14 V | Ignition switch turned ON. | — |
|
*0 – 1 V
↑ ↓ 10 – 14 V (Refer to Reference waveform No.26 .) |
Engine running at idling with after warming up engine. | Output signal is active low duty pulse. Pulse generated times depending on vehicle condition. | |||
| E117-17 | GRY | EGR valve (stepper motor coil 1) output | 10 – 14 V | Ignition switch turned ON. | — |
|
*0 – 1 V
↑ ↓ 10 – 14 V (Refer to Reference waveform No.26 .) |
Engine running at idling with after warming up engine. | Output signal is active low duty pulse. Pulse generated times depending on vehicle condition. | |||
| E117-18 | — | — | — | — | — |
| E117-19 | — | — | — | — | — |
| E117-20 | — | — | — | — | — |
| E117-21 | — | — | — | — | — |
| E117-22 | — | — | — | — | — |
| E117-23 | — | — | — | — | — |
| E117-24 | — | — | — | — | — |
| E117-25 | — | — | — | — | — |
| E117-26 | — | — | — | — | — |
| E117-27 | — | — | — | — | — |
| E117-28 | BLU/ORN | Power steering pressure switch signal | 10 – 14 V | Ignition switch turned ON. | — |
| 0 – 1 V | With engine at idle speed, turning steering wheel to the right or left as far as it stops. | ||||
| E117-29 | — | — | — | — | — |
| E117-30 | — | — | — | — | — |
| E117-31 | BRN/BLK | Ignition coil No.2 and No.3 output | 0 – 0.6 V | Ignition switch turned ON. | — |
|
*0 – 0.6 V
↑ ↓ 3 – 5 V (Refer to Reference waveform No.27 and Reference waveform No.28 .) |
Engine running at idling with after warming up engine. | Output signal is active high pulse. Pulse frequency varies depending on engine speed. | |||
| E117-32 | BRN/WHT | Ignition coil No.1 and No.4 output | 0 – 0.6 V | Ignition switch turned ON. | — |
|
*0 – 0.6 V
↑ ↓ 3 – 5 V (Refer to Reference waveform No.27 , Reference waveform No.29 and Reference waveform No.30 .) |
Engine running at idling with after warming up engine. | Output signal is active high pulse. Pulse frequency varies depending on engine speed. | |||
| E117-33 | GRY/BLK | EGR valve (stepper motor coil 4) output | 10 – 14 V | Ignition switch turned ON. | — |
|
*0 – 1 V
↑ ↓ 10 – 14 V (Refer to Reference waveform No.26 .) |
Engine running at idling with after warming up engine. | Output signal is active low duty pulse. Pulse generated times depending on vehicle condition. | |||
| E117-34 | GRY/RED | EGR valve (stepper motor coil 2) output | 10 – 14 V | Ignition switch turned ON. | — |
|
*0 – 1 V
↑ ↓ 10 – 14 V (Refer to Reference waveform No.26 .) |
Engine running at idling with after warming up engine. | Output signal is active low duty pulse. Pulse generated times depending on vehicle condition. |
Reference waveform No.1
CAN communication line signal from TCM at ignition switch turned ON
| Measurement terminal |
CH1: E118-8 to E119-1
CH2: E118-7 to E119-1 |
| Oscilloscope setting |
CH1: 1 V/DIV, CH2: 1 V/DIV
TIME: 40 µs/DIV |
| Measurement condition |
Ignition switch turned ON
(Depending on engine condition) |
| 1. | CAN communication line signal (High) |
| 2. | CAN communication line signal (Low) |
Reference waveform No.2
Ignition pulse (engine revolution) (2) signal at engine idling
| Measurement terminal |
CH1: E119-10 to E119-1
CH2: E118-12 to E119-1 |
| Oscilloscope setting |
CH1: 5 V/DIV, CH2: 5 V/DIV
TIME: 40 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Engine at specified idle speed |
| 1. | CMP sensor signal | 3. | 720° crank angle |
Reference waveform No.3
Ignition pulse (engine revolution) (2) signal at engine idling
| Measurement terminal |
CH1: E119-10 to E119-1
CH2: E118-12 to E119-1 |
| Oscilloscope setting |
CH1: 5 V/DIV, CH2: 5 V/DIV
TIME: 10 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Engine at specified idle speed |
| 1. | CMP sensor signal | 4. | 2 to 4 msec. |
| 3. | 360° crank angle | 5. | 10 – 14 V |
Reference waveform No.4
Engine coolant temperature signal for combination meter at engine idling
| Measurement terminal | CH1: E118-32 to E119-1 |
| Oscilloscope setting |
CH1: 5 V/DIV
TIME: 400 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Engine at specified idle speed |
| 1. | OFF signal | 3. | One duty cycle (Approx. 1 sec.) |
| 2. | ON signal |
Reference waveform No.5
Oil control valve signal at engine idling
| Measurement terminal | CH1: E119-3 to E119-2 |
| Oscilloscope setting |
CH1: 5 V/DIV
TIME: 2 ms/DIV |
| Measurement condition | At the moment of the ignition switch turned ON |
| 1. | ON signal | 3. | One duty cycle |
| 2. | OFF signal |
Reference waveform No.6
Oil control valve signal (1) at engine racing
| Measurement terminal | CH1: E119-3 to E119-2 |
| Oscilloscope setting |
CH1: 5 V/DIV
TIME: 2 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Drive vehicle at 20 km/h (12 mph) |
| 1. | ON signal | 3. | One duty cycle |
| 2. | OFF signal |
Reference waveform No.7
Fuel injector signal (2) at engine idling
| Measurement terminal |
CH1: E119-10 to E119-1
CH2: E119-4 to E119-1 |
| Oscilloscope setting |
CH1: 5 V/DIV, CH2: 20 V/DIV
TIME: 1 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Engine at specified idle speed |
| 1. | CMP sensor signal |
| 3. | Pulse width of fuel injector: ON 2 – 4 msec |
| 4. | 10 – 14 V |
Reference waveform No.8
No.4 fuel injector signal (2) at engine idling
| Measurement terminal |
CH1: E119-10 to E119-1
CH2: E119-4 to E119-1 |
| Oscilloscope setting |
CH1: 5 V/DIV, CH2: 20 V/DIV
TIME: 40 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Engine at specified idle speed |
| 1. | CMP sensor signal | 3. | 720° crank angle |
Reference waveform No.9
No.3 fuel injector signal (2) at engine idling
| Measurement terminal |
CH1: E119-10 to E119-1
CH2: E119-5 to E119-1 |
| Oscilloscope setting |
CH1: 5 V/DIV, CH2: 20 V/DIV
TIME: 40 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Engine at specified idle speed |
| 1. | CMP sensor signal | 3. | 720° crank angle |
Reference waveform No.10
No.2 fuel injector signal (2) at engine idling
| Measurement terminal |
CH1: E119-10 to E119-1
CH2: E119-6 to E119-1 |
| Oscilloscope setting |
CH1: 5 V/DIV, CH2: 20 V/DIV
TIME: 40 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Engine at specified idle speed |
| 1. | CMP sensor signal | 3. | 720° crank angle |
Reference waveform No.11
No.1 fuel injector signal (2) at engine idling
| Measurement terminal |
CH1: E119-10 to E119-1
CH2: E119-7 to E119-1 |
| Oscilloscope setting |
CH1: 5 V/DIV, CH2: 20 V/DIV
TIME: 40 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Engine at specified idle speed |
| 1. | CMP sensor signal | 3. | 720° crank angle |
Reference waveform No.12
Knock sensor signal at engine speed 4000 r/min.
| Measurement terminal | CH1: E119-9 to E119-1 |
| Oscilloscope setting |
CH1: 1 V/DIV
TIME: 10 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Run engine at 4000 r/min. |
Reference waveform No.13
Knock sensor signal at engine speed 4000 r/min.
| Measurement terminal | CH1: E119-9 to E119-1 |
| Oscilloscope setting |
CH1: 1 V/DIV
TIME: 200 µs/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Run engine at 4000 r/min. |
Reference waveform No.14
CMP sensor signal at engine idling
| Measurement terminal |
CH1: E119-10 to E119-1
CH2: E119-30 to E119-1 |
| Oscilloscope setting |
CH1: 2 V/DIV, CH2: 2 V/DIV
TIME: 20 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Engine at specified idle speed |
| 1. | CMP sensor signal | 4. | 4 – 5 V |
| 2. | CKP sensor signal | 5. | 36 – 6 = 30 CKP pulse |
| 3. | 360° crank angle |
Reference waveform No.15
CMP sensor signal at engine idling
| Measurement terminal |
CH1: E119-10 to E119-1
CH2: E119-30 to E119-1 |
| Oscilloscope setting |
CH1: 2 V/DIV, CH2: 2 V/DIV
TIME: 10 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Engine at specified idle speed |
| 1. | CMP sensor signal | 4. | 10° crank angle |
| 2. | CKP sensor signal | 5. | 360° crank angle |
| 3. | 30° crank angle | 6. | 36 – 6 = 30 CKP pulse |
Reference waveform No.16
Heated oxygen sensor-1 signal (1) at engine idling
| Measurement terminal |
CH1: E119-11 to E119-28
CH2: E117-4 to E119-1 |
| Oscilloscope setting |
CH1: 500 m/DIV, CH2: 10 V/DIV
TIME: 1 s/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Engine at specified idle speed |
| 2. | Heated oxygen sensor-1 heater signal |
Reference waveform No.17
Heated oxygen sensor-1 heater signal (2) at engine idling
| Measurement terminal |
CH1: E119-11 to E119-28
CH2: E117-4 to E119-1 |
| Oscilloscope setting |
CH1: 500 m/DIV, CH2: 10 V/DIV
TIME: 200 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Engine at specified idle speed |
| 1. | Heated oxygen sensor-1 signal | 4. | ON signal |
| 3. | OFF signal | 5. | One duty cycle |
Reference waveform No.18
Mass air flow sensor signal (1) at engine racing
| Measurement terminal |
CH1: E119-14 to E119-32
CH2: E119-34 to E119-28 |
| Oscilloscope setting |
CH1: 1 V/DIV, CH2: 1 V/DIV
TIME: 200 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Engine at racing |
| 2. | Throttle position sensor signal | 4. | Idle |
| 3. | Racing |
Reference waveform No.19
Manifold absolute pressure sensor signal (1) at ignition switch turned ON
| Measurement terminal |
CH1: E119-15 to E119-28
CH2: E119-34 to E119-28 |
| Oscilloscope setting |
CH1: 2 V/DIV, CH2: 1 V/DIV
TIME: 200 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Ignition switch turned ON |
| 2. | Throttle position sensor signal |
Reference waveform No.20
Manifold absolute pressure sensor signal (1) at engine racing
| Measurement terminal |
CH1: E119-15 to E119-28
CH2: E119-34 to E119-28 |
| Oscilloscope setting |
CH1: 2 V/DIV, CH2: 2 V/DIV
TIME: 200 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Engine racing |
| 2. | Throttle position sensor signal | 4. | Idle |
| 3. | Racing |
Reference waveform No.21
VSS signal at 30 km/h (19 mph)
| Measurement terminal | CH1: E119-19 to E119-1 |
| Oscilloscope setting |
CH1: 5 V/DIV
TIME: 20 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Drive vehicle at 30 km/h (19 mph) |
| 1. | ON | 3. | 10 – 14 V |
| 2. | OFF | 4. | One duty cycle (Approx. 45 – 55 msec.) |
Reference waveform No.22
Heated oxygen sensor-2 heater signal (4) at engine idling
| Measurement terminal |
CH1: E119-33 to E118-35
CH2: E117-3 to E119-1 |
| Oscilloscope setting |
CH1: 500 m/DIV, CH2: 10 V/DIV
TIME: 2 s/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Drive vehicle at 60 km/h (37 mph) for 10 min. • Engine at specified idle speed |
| 1. | Heated oxygen sensor-2 signal upper limit |
| 2. | Heated oxygen sensor-2 signal lower limit |
| 3. | Normal waveform range |
Reference waveform No.23
IAC signal at ignition switch turned ON
| Measurement terminal | CH1: E117-8 to E119-1 |
| Oscilloscope setting |
CH1: 5 V/DIV
TIME: 2 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Ignition switch turned ON • All accessory switch turned OFF |
| 1. | ON signal | 3. | One duty cycle (Approx. 4 msec.) |
| 2. | OFF signal | 4. | 8 – 14 V |
Reference waveform No.24
IAC signal at engine idling
| Measurement terminal | CH1: E117-8 to E119-1 |
| Oscilloscope setting |
CH1: 5 V/DIV
TIME: 2 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Engine at specified idle speed • All accessory switch turned OFF |
| 1. | ON signal | 3. | One duty cycle (Approx. 4 msec.) |
| 2. | OFF signal | 4. | 8 – 14 V |
Reference waveform No.25
EVAP canister purge valve signal
| Measurement terminal | CH1: E117-3 to E119-1 |
| Oscilloscope setting |
CH1: 10 V/DIV
TIME: 100 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Drive vehicle at 20 km/h (12 mph) |
| 1. | ON signal | 3. | One duty cycle |
| 2. | OFF signal | 4. | 10 – 14 V |
Reference waveform No.26
EGR valve signal
| Measurement terminal |
CH1: E117-17 to E119-1
CH2: E117-34 to E119-1 CH3: E117-16 to E119-1 CH4: E117-33 to E119-1 |
| Oscilloscope setting |
CH1: 20 V/DIV, CH2: 20 V/DIV,
CH3: 20 V/DIV, CH4: 20 V/DIV TIME: 2 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Engine at specified idle speed |
| 1. | EGR valve stepper motor coil 1 signal |
| 2. | EGR valve stepper motor coil 2 signal |
| 3. | EGR valve stepper motor coil 3 signal |
| 4. | EGR valve stepper motor coil 4 signal |
| 5. | ON signal |
| 6. | OFF signal |
Reference waveform No.27
Ignition coil signal at engine idling
| Measurement terminal | CH1: E117-32 to E119-1 |
| Oscilloscope setting |
CH1: 1 V/DIV
TIME: 2 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Engine at specified idle speed |
| 1. | 4 – 6 V | 2. | 4 – 5 msec. |
Reference waveform No.28
Ignition coil No.2 and No.3 (2) signal at engine idling
| Measurement terminal |
CH1: E119-10 to E119-1
CH2: E117-31 to E119-1 |
| Oscilloscope setting |
CH1: 2 V/DIV, CH2: 2 V/DIV
TIME: 40 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Engine at specified idle speed |
| 1. | CMP sensor signal | 3. | 720° crank angle |
Reference waveform No.29
Ignition coil No.1 and No.4 (2) signal at engine idling
| Measurement terminal |
CH1: E119-10 to E119-1
CH2: E117-32 to E119-1 |
| Oscilloscope setting |
CH1: 2 V/DIV, CH2: 2 V/DIV
TIME: 40 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Engine at specified idle speed |
| 1. | CMP sensor signal | 3. | 720° crank angle |
Reference waveform No.30
Ignition coil signal and fuel injector signal at engine cranking
| Measurement terminal |
CH1: E119-10 to E119-1
CH2: E117-32 to E119-1 CH3: E119-7 to E119-1 CH4: E119-35 to E119-1 |
| Oscilloscope setting |
CH1: 5 V/DIV, CH2: 5 V/DIV,
CH3: 50 V/DIV, CH4: 10 V/DIV TIME: 200 ms/DIV |
| Measurement condition |
•
After warmed up to normal operating temperature
• Engine at cranking |
| 1. | CMP sensor signal | 3. | No.1 fuel injector signal |
| 2. | Ignition coil No.1 and No.4 signal | 4. | Engine start signal |
Resistance Check
1)
Disconnect ECM couplers (1) from ECM with ignition switch OFF.
CAUTION:
Never touch terminals of ECM itself or connect voltmeter or ohmmeter (2).
2)
Check resistance between each terminal of couplers disconnected.
CAUTION:
•
Be sure to connect ohmmeter probe from wire harness side of coupler.
• Be sure to turn OFF ignition switch for this check.
• Resistance in the following table represents that when parts temperature is 20 °C (68 °F).
• Be sure to turn OFF ignition switch for this check.
• Resistance in the following table represents that when parts temperature is 20 °C (68 °F).
| 1. | ECM coupler disconnected | 2. | Ohmmeter |
| Terminals | Circuit | Standard resistance | Condition |
|---|---|---|---|
| E117-4 to E118-28 | HO2S-1 heater | 5 – 6.4 Ω | — |
| E117-3 to E118-28 | HO2S-2 heater | 11.7 – 14.3 Ω | — |
| E119-7 to E118-5/6 | Fuel injector No.1 | 10.8 – 18.2 Ω | — |
| E119-6 to E118-5/6 | Fuel injector No.2 | 10.8 – 18.2 Ω | — |
| E119-5 to E118-5/6 | Fuel injector No.3 | 10.8 – 18.2 Ω | — |
| E119-4 to E118-5/6 | Fuel injector No.4 | 10.8 – 18.2 Ω | — |
| E117-33 to E118-5/6 | EGR valve (stepper motor coil 4) | 20 – 29 Ω | — |
| E117-16 to E118-5/6 | EGR valve (stepper motor coil 3) | 20 – 29 Ω | — |
| E117-34 to E118-5/6 | EGR valve (stepper motor coil 2) | 20 – 29 Ω | — |
| E117-17 to E118-5/6 | EGR valve (stepper motor coil 1) | 20 – 29 Ω | — |
| E117-13 to E118-5/6 | EVAP canister purge valve | 28 – 35 Ω | — |
| E117-14 to E118-28 | Fuel pump relay | 160 – 240 Ω | — |
| E117-15 to E118-28 | Main relay | 160 – 240 Ω | Battery disconnected and ignition switch ON |
| E119-1 to vehicle body ground | Ground | Below 1.5 Ω | — |
| E117-1 to vehicle body ground | Ground | Below 1.5 Ω | — |
| E117-2 to vehicle body ground | Ground | Below 1.5 Ω | — |