DTC P0113: Intake Air Temperature Sensor Circuit High - Suzuki Jimny Workshop Manual
1A
DTC P0113: Intake Air Temperature Sensor Circuit High
Wiring Diagram
| 1. | MAF and IAT sensor | 2. | ECM | 3. | To other sensors | 4. | From main relay |
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
DTC will be set when all of the following conditions are detected for 0.5 seconds continuously.
•
Engine is running
(1 driving cycle detection logic)
• Voltage of IAT sensor output is more than the specified value (Low intake air temperature (high voltage/high resistance)) |
•
IAT sensor circuit
• IAT sensor • ECM |
NOTE:
When DTC P0108, P0118 and P0123 are indicated together, it is possible that “BLK/BLU” wire circuit is open.
DTC Confirmation Procedure
1)
With ignition switch turned OFF, connect scan tool.
2)
Turn ON ignition switch and clear DTC using scan tool.
3)
Start engine and run it for 10 sec.
4)
Check DTC and pending DTC.
DTC Troubleshooting
| Step | Action | YES | NO |
|---|---|---|---|
| 1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
|
|
| 2 |
IAT sensor and its circuit check
1)
Connect scan tool to DLC with ignition switch turned OFF.
2)
Turn ON ignition switch.
3)
Check intake air temp. displayed on scan tool.
Is –40 °C (–40 °F) indicated?
|
Go to Step 3.
|
Intermittent trouble. Check for intermittent referring to
Intermittent and Poor Connection Inspection
.
|
| 3 |
IAT sensor voltage check
1)
Disconnect connector from MAF and IAT sensor with ignition switch turned OFF.
2)
Check for proper connection to MAF and IAT sensor at “LT GRN/BLK” and “BLK/BLU” wire terminals.
3)
If OK, then turn ON ignition switch, measure voltage between “LT GRN/BLK” wire terminal of IAT sensor connector (1) and vehicle body ground.
Is voltage about 4 – 6 V?
|
Go to Step 7.
|
Go to Step 4.
|
| 4 |
ECM voltage check
1)
Turn OFF ignition switch.
2)
Check for proper connection of ECM connector at “E119-17” terminal.
3)
If OK, then turn ON ignition switch, measure voltage between “E119-17” terminal of ECM connector and vehicle body ground.
Is voltage about 4 – 6 V?
|
“LT GRN/BLK” wire open circuit. If wire and connection are OK, go to Step 5.
|
Go to Step 5.
|
| 5 |
Wire circuit check
1)
Disconnect connectors from ECM with ignition switch turned OFF.
2)
Turn ON ignition switch.
3)
Measure voltage between “LT GRN/BLK” wire terminal of MAF and IAT sensor connector and vehicle body ground.
Is voltage about 0 V?
|
Go to Step 6.
|
“LT GRN/BLK” wire shorted to other circuits.
If wire are OK, substitute a known-good ECM and recheck.
|
| 6 |
Wire circuit check
1)
Measure resistance between “E119-17” terminal of ECM connector and “LT GRN/BLK” wire terminal of MAF and IAT sensor connector with ignition switch turned OFF.
Is resistance below 5 Ω?
|
Go to Step 7.
|
“LT GRN/BLK” wire in high resistance circuit.
|
| 7 |
Ground circuit check
1)
Connect connectors to ECM.
2)
Check for proper connection of MAF and IAT sensor connector at “BLK/BLU” wire terminal.
3)
Measure resistance between “BLK/BLU” wire terminal of MAF and IAT sensor connector and body ground with ignition switch turned OFF.
Is resistance below 5 Ω?
|
Go to Step 9.
|
Go to Step 8.
|
| 8 |
Ground circuit check
1)
Measure resistance between “E119-28” terminal of ECM connector and body ground.
Is resistance below 5 Ω?
|
“BLK/BLU” wire open circuit or high resistance circuit. Poor “E119-28” connection.
|
Faulty ECM ground circuit. If circuit are OK, substitute a known-good ECM and recheck.
|
| 9 |
IAT sensor for performance check
1)
Check IAT sensor according to
Mass Air Flow (MAF) and Intake Air Temperature (IAT) Sensor Inspection:M13A
.
Is it in good condition?
|
Substitute a known-good ECM and recheck.
|
Replace MAF and IAT sensor.
|
NOTE:
Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and confirm that the trouble has been corrected.