Diagnosis Procedure
WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK CAN DIAGNOSIS SUPPORT MONITOR
CONSULT
- Select "CAN Diagnosis Support Monitor" mode of "CHASSIS CONTROL".
- Check for malfunction between each control unit connected to chassis control module.
Check the result of "PRESENT"?
Refer to CAN Communication Control Circuit .
"TRANSMIT DIAG" is other than "OK"
GO TO 2 .
"ENGINE" other than "OK"
GO TO 3 .
- CHECK TRANSMITTING SIDE UNIT
- Turn the ignition switch OFF.
- Disconnect chassis control module harness connector.
- Check the chassis control module harness connector terminals 3 and 4 for damage or loose connection.
Is the inspection result normal?
YES
GO TO 5 .
NO
Recheck terminals for damage or loose connection. Refer to Precautions for Harness Repair . GO TO 5 .
- CHECK ECM
- Turn the ignition switch OFF.
- Disconnect ECM harness connector.
- Check ECM harness connector terminals (CAN communication line) for damage or loose connection.
Is the inspection result normal?
YES
GO TO 4 .
NO
Recheck terminals for damage or loose connection. Refer to Precautions for Harness Repair . GO TO 4 .
- PERFORM SELF-DIAGNOSIS (ECM)
- Connect ECM harness connector.
- Erase "Self diagnostic result" mode of "ENGINE".
- Turn the ignition switch OFF and wait for 10 seconds or more.
- Turn the ignition switch ON.
- Select "Self diagnostic result" mode of "ENGINE".
Is DTC detected?
YES
Check the DTC. Refer to DTC Index .
NO
GO TO 5 .
- PERFORM SELF-DIAGNOSIS
- Connect chassis control module harness connector.
- Erase "Self diagnostic result" mode of "CHASSIS CONTROL".
- Turn the ignition switch OFF and wait for 10 seconds or more.
- Turn the ignition switch ON.
- Select "All DTC Reading" mode.
Is DTC "U1000-00", "U1A48-00" or other DTC detected?
YES
Refer to Diagnosis Procedure .
YES
Replace the chassis control module. Refer to Removal and Installation .
YES
Check the DTC.
NO
Inspection End.