5A
Inspection of TCM and Its Circuits
TCM and its circuits can be checked at TCM wiring connectors by measuring voltage pulse signal and resistance.
CAUTION:
TCM cannot be checked by itself, it is strictly prohibited to connect voltmeter or ohmmeter to TCM with connector disconnected from it.
1) Remove TCM (1) from vehicle referring to Transmission Control Module (TCM) Removal and Installation .
2) Connect TCM connectors (2) to TCM.
3) Check voltage and/or pulse signal at each terminal of connectors connected, using voltmeter (3) and oscilloscope (4).
NOTE:
• As each terminal voltage is affected by 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.
M13 Engine Model with VVT
Terminal arrangement of TCM coupler (Viewed from harness side)
Connector “E121”
Terminal Wire color Circuit Standard voltage Condition
1 BLK Ground 0 – 1 V Ignition switch ON
2 BLU/YEL Pressure control solenoid valve (–) 0.6 – 1.0 V Ignition switch ON
3 — — — —
4 BLU/RED Pressure control solenoid valve (+) *0 – 0.6 V
↑↓
10 – 14 V
( Reference waveform No.1 ) 		Engine running at idling (Output signal is duty pulse. Duty ratio varies depending on throttle valve opening.)
5 BLK/YEL TCC solenoid valve 0 – 1 V Ignition switch ON
6 BLU/ORN Power source 10 – 14 V Ignition switch ON
7 WHT CAN communication line (Low) *0.5 – 2.5 V
( Reference waveform No.2 ) 		Ignition switch turned ON with engine stop
(CAN communication line signal is pulse. Pulse signal is displayed with a regular frequency varies depending on engine condition.)
8 — — — —
9 — — — —
10 — — — —
11 BLU Transmission fluid temperature sensor (+) 2.9 – 3.1 V Ignition switch ON, fluid temperature is 20 °C (68 °F)
0.3 – 0.5 V Ignition switch ON, fluid temperature is 100 °C (212 °F)
12 BLK/BLU Transmission fluid temperature sensor (–) 0 – 1 V Ignition switch ON
13 — — — —
14 WHT/RED Timing solenoid valve 0 – 1 V Ignition switch ON
15 YEL/GRN Shift solenoid valve-B (No.2) 9 – 14 V Ignition switch ON, select lever in “P” range
16 RED/GRN Shift solenoid valve-B (No.2) 9 – 14 V Ignition switch ON, select lever in “P” range
17 RED CAN communication line (High) *2.5 – 4.7 V
( Reference waveform No.2 ) 		Ignition switch turned ON with engine stop
(CAN communication line signal is pulse. Pulse signal is displayed with a regular frequency varies depending on engine condition.)
18 — — — —
19 — — — —
20 — — — —
21 — — — —
22 — — — —
23 BLK Ground 0 – 1 V Ignition switch ON
24 WHT Power source for back-up 10 – 14 V Constantly
Connector “E122”
Terminal Wire color Circuit Standard voltage Condition
1 RED Transmission range sensor (“R” range) 8 – 14 V Ignition switch ON, selector lever at “R” range
0 – 1 V Ignition switch ON, selector lever at other than “R” range
2 — — — —
3 — — — —
4 — — — —
5 PNK Output shaft speed sensor (+) 2 – 3 V Ignition switch turned ON, vehicle stop
*( Reference waveform No.3 ) While vehicle running
(Output signal is waveform. Waveform frequency varies depending on output shaft speed. (18 pulses are generated par 1 input shaft revolution.))
6 WHT Input shaft speed sensor (+) 2 – 3 V Ignition switch turned ON, engine stops
*( Reference waveform No.4 ) While engine running at “P” or “N” range or vehicle running
(Output signal is waveform. Waveform frequency varies depending on output shaft speed. (16 pulses are generated par 1 input shaft revolution.))
7 GRN/RED Transmission range sensor (“D” range) 8 – 14 V Ignition switch ON, selector lever at “D” range
0 – 1 V Ignition switch ON, selector lever at other than “D” range
8 ORN Transmission range sensor (“N” range) 8 – 14 V Ignition switch ON, selector lever at “N” range
0 – 1 V Ignition switch ON, selector lever at other than “N” range
9 BLU/YEL “3” position switch 0 – 1 V Ignition switch ON, selector lever at “R”, “3”, “2” or “L” range
8 – 14 V Ignition switch ON, selector lever at “P”, “N” or “D” range
10 — — — —
11 YEL/BLK TCM-combination meter serial communication line *0 – 0.6 V
↑↓
10 – 14 V
( Reference waveform No.5 ) 		While vehicle running
(Output signal is active low duty pulse. Duty ratio varies depending on meter indicator light condition.)
12 GRY Diagnosis switch 8 – 14 V Ignition switch ON
13 — — — —
14 BLU Output shaft speed sensor (–) 2 – 3 V Ignition switch ON, vehicle at stop
15 — — — —
16 BRN Input shaft speed sensor (–) 2 – 3 V Ignition switch ON
17 — — — —
18 GRN/WHT Transmission range sensor (“L” range) 8 – 14 V Ignition switch ON, select lever at “L” range
0 – 1 V Ignition switch ON, select lever at other than “L” range
19 GRN Transmission range sensor (“2” range) 8 – 14 V Ignition switch ON, select lever at “2” range
0 – 1 V Ignition switch ON, select lever at other than “2” range
20 ORN/BLK Transmission range sensor (“P” range) 8 – 14 V Ignition switch ON, select lever at “P” range
0 – 1 V Ignition switch ON, select lever at other than “P” range
21 — — — —
22 — — — —
23 PNK/GRN Data link connector 8 – 14 V Ignition switch ON
24 — — — —
25 YEL Vehicle speed sensor 8 – 14 V Ignition switch ON
*0 – 1 V
↑↓
10 – 14 V
( Reference waveform No.6 ) 		Vehicle running
(Signal from sensor is pulse. Pulse frequency varies depending on vehicle speed. 1.273 pulse are generated per 1 sensor shaft revolution)
26 — — — —
M13 Engine Model without VVT
Terminal arrangement of TCM coupler (Viewed from harness side)
Connector “E123”
Terminal Wire color Circuit Standard voltage Condition
1 — — — —
2 — — — —
3 YEL/GRN Shift solenoid valve-B (No.2) 8 – 14 V Ignition switch ON, select lever in “P” range
4 RED/GRN Shift solenoid valve-A (No.1) 8 – 14 V Ignition switch ON, select lever in “P” range
5 BLU Transmission fluid temperature sensor (+) 2.9 – 3.1 V Ignition switch ON, fluid temperature is 20 °C (68 °F)
0.3 – 0.5 V Ignition switch ON, fluid temperature is 100 °C (212 °F)
6 GRY Diagnosis switch 8 – 14 V Ignition switch ON
7 — — — —
8 BLU/YEL Pressure control solenoid valve (–) 0.6 – 1.0 V Ignition switch ON
9 — — — —
10 WHT/RED Timing solenoid valve 0 – 1 V Ignition switch ON
11 BLU/RED Pressure control solenoid valve (+) *0 – 0.6 V
↑↓
10 – 14 V
( Reference waveform No.1 ) 		Engine running at idling
(Output signal is duty pulse. Duty ratio varies depending on throttle valve opening.)
12 BLK/YEL TCC solenoid valve 0 – 1 V Ignition switch ON
13 WHT Power source for back-up 10 – 14 V Constantly
14 BLK/BLU Transmission fluid temperature sensor (–) 0 – 1 V Ignition switch ON
15 BLK Ground 0 – 1 V Ignition switch ON
16 — — — —
17 — — — —
18 — — — —
19 BLK Ground 0 – 1 V Ignition switch ON
20 BLU/ORN Power source 10 – 14 V Ignition switch ON
Connector “E124”
Terminal Wire color Circuit Standard voltage Condition
1 RED Transmission range sensor (“R” range) 8 – 14 V Ignition switch ON, select lever at “R” range
0 – 1 V Ignition switch ON, select lever at other than “R” range
2 ORN/BLK Transmission range sensor (“P” range) 8 – 14 V Ignition switch ON, select lever at “P” range
0 – 1 V Ignition switch ON, select lever at other than “P” range
3 BLU/YEL “3” position switch 8 – 14 V Ignition switch ON, select lever at “P”, “N” or “D” range
0 – 1 V Ignition switch ON, select lever at “R”, “3”, “2” or “L” range
4 PNK Output shaft speed sensor (+) 2 – 3 V Ignition switch ON, vehicle stop
*( Reference waveform No.3 ) While vehicle running
(Output signal is waveform. Waveform frequency varies depending on output shaft speed. (18 pulses are generated per 1 input shaft revolution.))
5 WHT Input shaft speed sensor (+) 2 – 3 V Ignition switch ON, engine stop
*( Reference waveform No.4 ) While engine running at “P” or “N” range or vehicle running
(Output signal is waveform. Waveform frequency varies depending on output shaft speed. (16 pulses are generated per 1 input shaft revolution.))
6 BRN/RED Throttle opening signal (from ECM) *0 – 0.6 V
↑↓
10 – 14 V
( Reference waveform No.7 ) 		Ignition switch ON (Signal from ECM is active low duty pulse. Duty ratio varies as throttle valve is opened gradually.)
Duty on time: 0.78 ms (throttle opening 0%) 6.24 ms (throttle opening 100%)
7 YEL/RED Engine coolant temperature signal (from ECM) *0 – 0.6 V
↑↓
10 – 14 V
( Reference waveform No.8 ) 		Ignition switch ON (Signal from ECM is active low duty pulse. Duty ratio varies depending on engine coolant temperature.)
Duty on time: 850 ms at 20 °C, 68 °F 1450 ms at 80 °C, 176 °F
8 GRN/RED Transmission range sensor (“D” range) 8 – 14 V Ignition switch ON, select lever at “D” range
0 – 1 V Ignition switch ON, select lever at other than “D” range
9 ORN Transmission range sensor (“N” range) 8 – 14 V Ignition switch ON, select lever at “N” range
0 – 1 V Ignition switch ON, select lever at other than “N” range
10 YEL/BLK TCM-combination meter serial communication line *0 – 0.6 V
↑↓
10 – 14 V
( Reference waveform No.5 ) 		While engine running
(Output signal is active low duty pulse. Duty ratio varies depending on meter indicator light condition.)
11 — — — —
12 GRN/YEL D range signal 8 – 14 V Ignition switch ON, select lever at “P” or “N”
0 – 1 V Ignition switch ON, select lever at “R”, “D”, “3”, “2” or “L”
13 GRN/WHT Brake light switch 8 – 14 V Ignition switch ON, brake pedal depressed
0 – 1 V Ignition switch ON, brake pedal released
14 BLK/YEL Air conditioner compressor signal 0 – 1 V Ignition switch ON, A/C compressor turned ON
8 – 14 V Ignition switch ON, A/C compressor turned OFF
15 BRN Engine speed signal 0 – 1 V Ignition switch ON, engine at stop
*0 – 0.6 V
↑↓
10 – 14 V
( Reference waveform No.9 ) 		While engine running (signal from ECM is pulse. Pulse frequency varies depending on engine speed. (3000 rpm = 100 Hz))
16 BLU Output shaft speed sensor (–) 2 – 3 V Ignition switch ON, vehicle stop
17 BRN Input shaft speed sensor (–) 2 – 3 V Ignition switch ON, engine stop
18 YEL Torque control signal 9 – 14 V Vehicle running
(Signal is 100 Hz low duty pulse. Pulse generated time is shifting time when transmission gear is shifted.)
19 — — — —
20 BLU/WHT Transmission range sensor (“L” range) 8 – 14 V Ignition switch ON, select lever at “L” range
0 – 1 V Ignition switch ON, select lever at other than “L” range
21 GRN/YEL Transmission range sensor (“2” range) 8 – 14 V Ignition switch ON, select lever at “2” range
0 – 1 V Ignition switch ON, select lever at other than “2” range
22 — — — —
23 BLK/ORN Engine torque signal *0 – 0.6 V
↑↓
10 – 14 V
( Reference waveform No.10 ) 		Ignition switch ON
(Signal from ECM is 128 Hz duty pulse. Duty ratio varies depending on engine torque.)
24 YEL/GRN Vehicle speed sensor *0 – 0.6 V
↑↓
10 – 14 V
( Reference waveform No.5 ) 		Ignition switch ON
(Signal from sensor is pulse. Pulse frequency varies depending on vehicle speed. 1.273 pulse are generated per 1 sensor shaft revolution.)
25 — — — —
26 — — — —
27 BLU Data link connector 8 – 14 V Ignition switch ON
28 WHT/YEL ATF temperature signal *0 – 0.6 V
↑↓
4 – 5 V
( Reference waveform No.11 ) 		Ignition switch ON
(Signal is 0.33 Hz duty pulse. Duty ratio varies depending on ATF temperature.)
Reference waveform No.1
Pressure control solenoid valve signal at engine idling
Measurement terminal CH1: E121-4 to E121-1 (M13 engine model with VVT), E123-11 to E123-15 (M13 engine model without VVT)
Oscilloscope setting CH1: 5 V/DIV
TIME: 2 ms/DIV
Measurement condition
• After warmed up to normal operating temperature
• Engine at specified idle speed with “P” range
Reference waveform No.2
CAN communication line signal from ECM at ignition switch turned ON
Measurement terminal CH1: E121-7 to E121-1
CH2: E121-17 to E121-1
Oscilloscope setting CH1: 1 V/DIV, CH2: 1 V/DIV
TIME: 100 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.3
Output shaft speed sensor signal at vehicle speed 20 km/h (12.5 mile/h)
Measurement terminal CH1: E122-5 to E121-1 (M13 engine model with VVT), E124-4 to E123-15 (M13 engine model without VVT)
Oscilloscope setting CH1: 2 V/DIV
TIME: 2 ms/DIV
Measurement condition
• After warmed up to normal operating temperature
• Vehicle speed at 20 km/h, 12.5 mile/h
Reference waveform No.4
Input shaft speed sensor signal at engine idling
Measurement terminal CH1: E122-6 to E121-1 (M13 engine model with VVT), E124-5 to E123-15 (M13 engine model without VVT)
Oscilloscope setting CH1: 2 V/DIV
TIME: 4 ms/DIV
Measurement condition
• After warmed up to normal operating temperature
• Engine at specified idle speed with “P” range
Reference waveform No.5
TCM-combination meter communication signal
Measurement terminal CH1: E122-11 to E121-1 (M13 engine model with VVT), E124-10 to E123-15 (M13 engine model without VVT)
Oscilloscope setting CH1: 5 V/DIV
TIME: 40 ms/DIV
Measurement condition
• After warmed up to normal operating temperature
• Engine at specified idle speed with “P” range
Reference waveform No.6
VSS signal at 30 km/h (19 mph)
Measurement terminal CH1: E122-25 to E121-1 (M13 engine model with VVT), E124-24 to E123-15 (M13 engine model without VVT)
Oscilloscope setting CH1: 5 V/DIV
TIME: 40 ms/DIV
Measurement condition
• After warmed up to normal operating temperature
• Drive vehicle at 30 km/h (19 mph)
Reference waveform No.7
Throttle opening signal from ECM
Measurement terminal CH1: E124-6 to E123-15
Oscilloscope setting CH1: 5 V/DIV
TIME: 4 ms/DIV
Measurement condition
• After warmed up to normal operating temperature
• Engine at specified idle speed
Reference waveform No.8
Engine coolant temperature signal from ECM
Measurement terminal CH1: E124-7 to E123-15
Oscilloscope setting CH1: 5 V/DIV
TIME: 1 s/DIV
Measurement condition
• After warmed up to normal operating temperature (90 °C, 194 °F)
• Engine at specified idle speed
Reference waveform No.9
Engine speed signal from ECM
Measurement terminal CH1: E124-15 to E123-15
Oscilloscope setting CH1: 5 V/DIV
TIME: 4 ms/DIV
Measurement condition
• After warmed up to normal operating temperature
• Engine at specified idle speed
Reference waveform No.10
Engine torque signal from ECM
Measurement terminal CH1: E124-23 to E123-15
Oscilloscope setting CH1: 5 V/DIV
TIME: 10 ms/DIV
Measurement condition
• After warmed up to normal operating temperature
• Engine at specified idle speed
Reference waveform No.11
ATF temperature signal to ECM
Measurement terminal CH1: E124-28 to E123-15
Oscilloscope setting CH1: 2 V/DIV
TIME: 1 s/DIV
Measurement condition
• After warmed up to normal operating temperature (ATF temperature 80 °C, 176 °F)
• Engine at specified idle speed