Nissan Versa (N17): Main power supply and ground circuit

Diagnosis Procedure

1.CHECK TCM POWER CIRCUIT 1

1. Turn the ignition switch OFF.
2. Disconnect the TCM connector.
3. Check the voltage between the TCM harness connector terminals and ground. 

Is the inspection result normal?

YES >> GO TO 2.

NO >> GO TO 4.

2.CHECK TCM POWER CIRCUIT 2

Check the voltage between the TCM harness connector terminals and ground. 

Is the inspection result normal?

YES >> GO TO 3.

NO >> GO TO 5.

3.CHECK TCM GROUND CIRCUIT

Check the continuity between TCM harness connector terminals and ground. 

Is the inspection result normal?

YES >> Check intermittent incident. Refer to GI, "Intermittent Incident".

NO >> Repair or replace the malfunctioning parts.

4.DETECT MALFUNCTION ITEMS (PART 1)

Check the following items:

1. Open or short circuit of the harness between battery positive terminal and TCM connectors terminal 45.
2. 10A fuse [No.25, fuse block (J/B)]. Refer to PG "Terminal Arrangement".

Is the inspection result normal?

YES >> Check intermittent incident. Refer to GI, "Intermittent Incident".

NO >> Repair or replace the malfunctioning parts.

5.DETECT MALFUNCTION ITEMS (PART 2)

Check the following items:

• Open or short circuit of the harness between IPDM E/R harness connector terminal 21 and TCM connector terminals 47, 48.
• Harness open circuit or short circuit between the ignition switch and IPDM E/R. Refer to PG, "Wiring Diagram - Ignition Power Supply -".
• 10A fuse [No.49, IPDM E/R]. Refer to PG-62, "IPDM E/R Terminal Arrangement".
• IPDM E/R

Is the inspection result normal?

YES >> Check intermittent incident. Refer to GI, "Intermittent Incident".

NO >> Repair or replace the malfunctioning parts.