|
STEP
|
INSPECTION
|
ACTION
|
|
1
|
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has FREEZE FRAME DATA been recorded?
|
Yes
|
Go to the next step.
|
|
No
|
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
|
|
2
|
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Verify related service repair information availability.
• Is any related repair information available?
|
Yes
|
Perform repair or diagnosis according to the available repair information.
• If the vehicle is not repaired, go to the next step.
|
|
No
|
Go to the next step.
|
|
3
|
VERIFY CURRENT SIGNAL STATUS: IS CONCERN INTERMITTENT OR CONSTANT?
• Connect the WDS or equivalent to the DLC-2.
• Clear the DTC from the PCM memory using the WDS or equivalent.
• Start the engine.
• Is the same DTC present?
|
Yes
|
Go to the next step.
|
|
No
|
Intermittent concern exists.
Perform the "INTERMITTENT CONCERN TROUBLESHOOTING".
|
|
4
|
INSPECT EXHAUST GAS TEMPERATURE SENSOR (UPPER) CONNECTOR FOR POOR CONNECTION
• Turn the engine switch off.
• Disconnect the exhaust gas temperature sensor (upper) connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
|
Yes
|
Repair or replace the terminal, then go to Step 9.
|
|
No
|
Go to the next step.
|
|
5
|
INSPECT EXHAUST GAS TEMPERATURE SENSOR (UPPER) SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY
• Turn the engine switch to the ON position (Engine off).
• Measure the voltage between exhaust gas temperature sensor (upper) terminal A (wiring harness-side) and body ground.
• Is the voltage B+?
|
Yes
|
Repair or replace the wiring harness for a possible short to power supply, then go to Step 9.
|
|
No
|
Go to the next step.
|
|
6
|
INSPECT EXHAUST GAS TEMPERATURE SENSOR (UPPER)
• Inspect the exhaust gas temperature sensor (upper).
• Is there any malfunction?
|
Yes
|
Replace the exhaust gas temperature sensor (upper), then go to Step 9.
|
|
No
|
Go to the next step.
|
|
7
|
INSPECT PCM CONNECTOR FOR POOR CONNECTION
• Turn the engine switch off.
• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
|
Yes
|
Repair or replace the terminal, then go to Step 9.
|
|
No
|
Go to the next step.
|
|
8
|
INSPECT EXHAUST GAS TEMPERATURE SENSOR (UPPER) CIRCUIT FOR OPEN CIRCUIT
• Turn the engine switch off.
• Inspect for continuity between the following terminals:
-
- Exhaust gas temperature sensor (upper) terminal A (wiring harness-side) and PCM terminal 56 (wiring harness-side)
-
- Exhaust gas temperature sensor (upper) terminal B (wiring harness-side) and PCM terminal 61 (wiring harness-side)
• Is there continuity?
|
Yes
|
Go to the next step.
|
|
No
|
Repair or replace the wiring harness for a possible open circuit, then go to the next step.
|
|
9
|
VERIFY TROUBLESHOOTING OF DTC P0546 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the WDS or equivalent.
• Start the engine.
• Is the same DTC present?
|
Yes
|
Replace the PCM, then go to the next step.
|
|
No
|
Go to the next step.
|
|
10
|
VERIFY AFTER REPAIR PROCEDURE
• Perform the Repair Verification Drive Mode.
• Are any DTCs present?
|
Yes
|
Go to the applicable DTC inspection.
|
|
No
|
DTC troubleshooting completed.
|
