Diagnosis Procedure

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side).
  - TCM
  - Harness connector F32
  - Harness connector E2
Is the inspection result normal?

YES

GO TO 2.

NO

Repair the terminal and connector.

CHECK HARNESS FOR OPEN CIRCUIT

Disconnect the connector of TCM.

Check the resistance between the TCM harness connector terminals.

TCM harness connector			Resistance (Ohm)
Connector No.	Terminal No.
F25	33	23	Approx. 54 - 66

Is the measurement value within the specification?

YES

GO TO 3.

Repair the TCM branch line.

CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the TCM. Refer to Diagnosis Procedure .

Is the inspection result normal?

YES

Replace the TCM. Refer to Removal and Installation .

YES

Error was detected in the TCM branch line.

NO

Repair the power supply and the ground circuit.