Diagnosis Procedure
WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
Regarding Wiring Diagram information, refer to WIRING DIAGRAM .
- CHECK RECLINING SENSOR SIGNAL
- Turn ignition switch ON.
- Read voltage signal between driver seat control unit harness connector and ground with oscilloscope.
(+) (+)-) Condition Voltage signal Driver seat control unit Connector Terminal B0029 13 Ground Seat reclining Operate Other than above 0 or 5
Is the inspection result normal?
YES
Replace driver seat control unit. Refer to REMOVAL AND INSTALLATION .
NO
GO TO STEP 2.
- CHECK RECLINING SENSOR CIRCUIT
- Turn ignition switch OFF.
- Disconnect driver seat control unit and reclining motor LH.
- Check continuity between driver seat control unit harness connector and reclining motor LH harness connector.
Driver seat control unit Reclining motor LH Continuity Connector Terminal Connector Terminal B0029 13 B217 1 Yes - Check continuity between driver seat control unit harness connector and ground.
Driver seat control unit Ground Continuity Connector Terminal B0029 13 No
Is the inspection result normal?
YES
GO TO STEP 3.
NO
Repair or replace harness.
- CHECK RECLINING SENSOR POWER SUPPLY
- Connect driver seat control unit.
- Turn ignition switch ON.
- Check voltage between reclining motor LH harness connector and ground.
(+) (+)-) Voltage (V)
(Approx.)Reclining motor LH Connector Terminals B217 3 Ground Battery voltage
Is the inspection result normal?
YES
GO TO STEP 5.
NO
GO TO STEP 4.
- CHECK RECLINING SENSOR POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect driver seat control unit.
- Check continuity between driver seat control unit harness connector and reclining motor LH harness connector.
Driver seat control unit Reclining motor LH Continuity Connector Terminal Connector Terminal B0029 5 B217 3 Yes - Check continuity between driver seat control unit harness connector and ground.
Driver seat control unit Ground Continuity Connector Terminal B0029 5 No
Is the inspection result normal?
YES
Replace driver seat control unit. Refer to REMOVAL AND INSTALLATION .
NO
Repair or replace harness.
- CHECK RECLINING SENSOR GROUND
- Turn ignition switch OFF.
- Check continuity between reclining motor LH harness connector and ground.
Reclining motor LH Ground Continuity Connector Terminal B217 2 Yes
Is the inspection result normal?
YES
Replace reclining motor LH. Refer to REMOVAL AND INSTALLATION .
NO
Repair or replace harness.