|
1
|
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
• Verify related Service Information availability.
• Is any related Service Information available?
|
Yes
|
Perform repair or diagnosis according to the available Service Information.
• If the vehicle is not repaired, go to the next step.
|
|
No
|
Go to the next step.
|
|
2
|
INSPECT AMBIENT TEMPERATURE SENSOR CONNECTOR CONDITION
• Switch the ignition off.
• Disconnect the ambient temperature sensor connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
|
Yes
|
Repair or replace the connector and/or terminals, then go to Step 7.
|
|
No
|
Go to the next step.
|
|
3
|
INSPECT AMBIENT TEMPERATURE SENSOR
• Inspect the ambient temperature sensor.
• Is there any malfunction?
|
Yes
|
Replace the ambient temperature sensor, then go to Step 7.
|
|
No
|
Go to the next step.
|
|
4
|
INSPECT AMBIENT TEMPERATURE SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND
• Verify that the ambient temperature sensor connector is disconnected.
• Inspect for continuity between ambient temperature sensor terminal A (wiring harness-side) and body ground.
• Is there continuity?
|
Yes
|
If the short to ground circuit could be detected in the wiring harness:
• Refer to the wiring diagram and verify whether or not there is a common connector between ambient temperature sensor terminal A and PCM terminal 2AX.
If there is a common connector:
-
― Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
― Repair or replace the malfunctioning part.
If there is no common connector:
-
― Repair or replace the wiring harness which has a short to ground.
If the short to ground circuit could not be detected in the wiring harness:
• Replace the PCM (short to ground in the PCM internal circuit).
Go to Step 7.
|
|
No
|
Go to the next step.
|
|
5
|
INSPECT PCM CONNECTOR CONDITION
• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
|
Yes
|
Repair or replace the connector and/or terminals, then go to Step 7.
|
|
No
|
Go to the next step.
|
|
6
|
INSPECT AMBIENT TEMPERATURE SENSOR SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT TO EACH OTHER
• Verify that the ambient temperature sensor and PCM connectors are disconnected.
• Inspect for continuity between ambient temperature sensor terminals A and B (wiring harness-side).
• Is there continuity?
|
Yes
|
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
• Ambient temperature sensor terminal A—PCM terminal 2AX
• Ambient temperature sensor terminal B—PCM terminal 2AY
If there is a common connector:
• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to each other.
• Repair or replace the malfunctioning part.
If there is no common connector:
• Repair or replace the wiring harness which has a short to each other.
Go to the next step.
|
|
No
|
Go to the next step.
|
|
7
|
VERIFY DTC TROUBLESHOOTING COMPLETED
• Always reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS.
• Perform the KOEO or KOER self test.
• Is the same DTC present?
|
Yes
|
Repeat the inspection from Step 1.
• If the malfunction recurs, replace the PCM.
Go to the next step.
|
|
No
|
Go to the next step.
|
|
8
|
VERIFY AFTER REPAIR PROCEDURE
• Perform the “AFTER REPAIR PROCEDURE”.
• Are any DTCs present?
|
Yes
|
Go to the applicable DTC inspection.
|
|
No
|
DTC troubleshooting completed.
|
