Diagnostic Test

WARNING: This page is about a different car, the 2016 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CONNECTION CONDITION
1. Turn ignition switch OFF.
2. Check the connection condition of the traction motor inverter harness connector.
Is the inspection result normal?

YES

GO TO STEP 2.

NO

Repair or replace damaged parts.

CHECK POWER CIRCUIT

Turn ignition switch OFF.
Disconnect the traction motor inverter harness connector.
Turn ignition switch ON.

Check the voltage between traction motor inverter vehicle side harness connector terminal and ground.

Traction motor inverter		Ground	Condition	Voltage (Approx.)
Connector	Terminal	Ground	Condition	Voltage (Approx.)
E2	31	Ground	Turn ignition switch ON	10 - 16 V
E2	31	Ground	Turn ignition switch OFF	0 V

Is the inspection result normal?

YES

Replace the traction motor inverter. Refer to REMOVAL AND INSTALLATION .

GO TO STEP 3.

CHECK HARNESS BETWEEN TRACTION MOTOR INVERTER AND IPDM E/R

Turn ignition switch OFF.
Disconnect the IPDM E/R connector.

Check the resistance between traction motor inverter vehicle side harness connector terminal and IPDM E/R vehicle side harness connector terminal.

Traction motor inverter		IPDM E/R		Resistance
Connector	Terminal	Connector	Terminal	Resistance
E2	31	E124	63	1 Ω or less

Check the resistance between traction motor inverter vehicle side harness connector terminal and ground.

Traction motor inverter		Ground	Resistance
Connector	Terminal	Ground	Resistance
E2	31	Ground	100 kΩ or more

Is the inspection result normal?

YES

GO TO STEP 4.

Repair or replace damaged parts.

DETECTION OF MALFUNCTION ITEMS

Check the following items:
- Harness open circuit or short circuit between IPDM E/R and ignition switch
- 10A fuse (#51, IPDM E/R)
- Ignition switch
- IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Is the inspection result normal?

YES

INSPECTION END

NO

Repair or replace damaged parts.