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 conditions of the traction motor inverter harness connector and the A/T assembly harness connector.
Is the inspection result normal?

YES

GO TO STEP 2.

NO

Repair or replace damaged parts.

DTC RECONFIRMATION
1. Disconnect the traction motor inverter harness connector and the A/T assembly harness connector, then check the conditions of their terminals.
2. Reconnect the connectors.
3. Turn ignition switch ON and wait for 10 seconds or more.
4. Check DTC.
Is current DTC "P0A3F" detected?

YES

Turn ignition switch OFF and GO TO STEP 3.

NO

INSPECTION END

CHECK TRACTION MOTOR RESOLVER CIRCUIT

Disconnect the traction motor inverter harness connector.

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

CAUTION:

Never damage connector terminals.

Traction motor inverter		Ground	Resistance
Connector	Terminal	Ground	Resistance
E2	1	Ground	100 kΩ or more
	3
	5
	7
	17
	35

Is the inspection result normal?

YES

GO TO STEP 4.

Repair or replace damaged parts.

CHECK TRACTION MOTOR RESOLVER CIRCUIT

Disconnect the A/T assembly harness connector.

Check the resistance between traction motor inverter vehicle side harness connector terminals and A/T assembly vehicle side harness connector terminals.

CAUTION:

Never damage connector terminals.

Traction motor inverter		A/T assembly (Traction motor)		Resistance
Connector	Terminal	Connector	Terminal	Resistance
E2	1	F66	4	1 Ω or less
	3		3
	5		1
	7		2
	17		6
	35		5

Check the harness for short.

CAUTION:

Never damage connector terminals.

Traction motor inverter			Resistance
Connector	Terminal		Resistance
E2	1	3	100 kΩ or more
		5
		7
		17
		35
	3	5
		7
		17
		35
	5	7
		17
		35
	7	17
	7	35
	17	35

Is the inspection result normal?

YES

GO TO STEP 5.

Repair or replace damaged parts.

CHECK TRACTION MOTOR RESOLVER

Check the traction motor resolver. Refer to COMPONENT INSPECTION (TRACTION MOTOR RESOLVER) .

Is the inspection result normal?

YES

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

NO

Replace the transmission assembly due to malfunction in the traction motor resolver (traction motor). Refer to REMOVAL AND INSTALLATION .