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Pinpoint Test G: The Power Seat Does Not Move Horizontally/Vertically - Passenger




Seats

Pinpoint Tests

Pinpoint Test G: The Power Seat Does Not Move Horizontally/Vertically - Passenger

Refer to Wiring Diagram Set 120, Seating for schematic and connector information. Diagrams By Number

Normal Operation

The seat control switch supplies battery voltage and ground to 1 of 3 power seat track motors through horizontal motor circuits 986 (YE/WH) and 987 (RD/WH), front height motor circuits 984 (YE/LB) and 985 (RD/LB) or rear height motor circuits 988 (YE/LG) and 989 (RD/LG) to move the seat in the desired direction.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Seat control switch
- Seat track motor


PINPOINT TEST G: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY - PASSENGER

WARNING: Remove restraint system diagnostic tools from the vehicle prior to road testing. If tools are not removed, the supplemental restraint system (SRS) device may not deploy in a crash. Failure to follow this instruction may result in serious personal injury or death in a crash and possibly violate vehicle safety standards.

NOTICE: Use the correct probe adapter(s) from the Flex Probe Kit when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

NOTICE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test. Inspection and Verification

NOTE: The air bag warning indicator illuminates when the correct Restraints Control Module (RCM) fuse is removed and the ignition switch is ON.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

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G1 CHECK THE HORIZONTAL MOTOR FOR CORRECT OPERATION


- Operate the passenger seat control switch to the forward and rearward positions.
- Does the seat move horizontally?

Yes
GO to G2.

No
GO to G9.

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G2 DETERMINE SEAT HEIGHT ADJUST FAILURE


- Determine seat height adjust failure.
- Does the seat front or rear height adjust up and down?

Yes
If only the rear height adjust operates, GO to G3.

If only the front height adjust operates, GO to G6.

No
INSTALL a new seat control switch. REFER to Seat Control Switch Seat Control Switch. TEST the system for normal operation.

DISCONNECT the battery ground cable. DISCONNECT the Restraint System Diagnostic Service Tool from passenger seat side air bag module C337. CONNECT passenger seat side air bag module C337. REPOWER the SRS. REFER to Air Bag Systems.

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G3 CHECK VOLTAGE TO THE FRONT HEIGHT MOTOR


- Ignition OFF.
- Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures of Air Bag Systems.
- Disconnect: Passenger Seat Side Air Bag C337.
- Connect: Restraint System Diagnostic Service Tool 418-133 to Passenger Seat Side Air Bag C337.
- Disconnect: Passenger Power Seat Motor Assembly C3015.
- WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any air bag module when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
- Connect the battery ground cable.
- Measure voltage between passenger power seat motor assembly C3015-8, circuit 984 (YE/LB) and C3015-2, circuit 985 (RD/LB), harness side, while operating the seat control switch rear height up and down.




- Is voltage greater than 10 volts when the seat control switch is toggled in both directions and 0 volt in the rest position?

Yes
INSTALL a new power seat track. REFER to Seat Track - Power Seat Track - Power. TEST the system for normal operation.

DISCONNECT the battery ground cable. DISCONNECT the Restraint System Diagnostic Service Tool from passenger seat side air bag module C337. CONNECT passenger seat side air bag module C337. REPOWER the SRS. REFER to Air Bag Systems.

No
GO to G4.

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G4 CHECK CIRCUIT 984 (YE/LB) FOR AN OPEN


- Disconnect: Passenger Seat Control Switch C3190.
- Measure resistance between passenger seat control switch C3190-7, circuit 984 (YE/LB), harness side and passenger power seat motor assembly C3015-8, circuit 984 (YE/LB), harness side.




- Is resistance less than 5 ohms?

Yes
GO to G5.

No
REPAIR the circuit. TEST the system for normal operation.

DISCONNECT the battery ground cable. DISCONNECT the Restraint System Diagnostic Service Tool from passenger seat side air bag module C337. CONNECT passenger seat side air bag module C337. REPOWER the SRS. REFER to Air Bag Systems.

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G5 CHECK CIRCUIT 985 (RD/LB) FOR AN OPEN


- Measure resistance between passenger seat control switch C3190-5, circuit 985 (RD/LB), harness side and passenger power seat motor assembly C3015-2, circuit 985 (RD/LB), harness side.




- Is resistance less than 5 ohms?

Yes
INSTALL a new passenger seat control switch. REFER to Seat Control Switch Seat Control Switch. TEST the system for normal operation.

DISCONNECT the battery ground cable. DISCONNECT the Restraint System Diagnostic Service Tool from passenger seat side air bag module C337. CONNECT passenger seat side air bag module C337. REPOWER the SRS. REFER to Air Bag Systems.

No
REPAIR the circuit. TEST the system for normal operation.

DISCONNECT the battery ground cable. DISCONNECT the Restraint System Diagnostic Service Tool from passenger seat side air bag module C337. CONNECT passenger seat side air bag module C337. REPOWER the SRS. REFER to Air Bag Systems.

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G6 CHECK VOLTAGE TO THE REAR HEIGHT MOTOR


- Ignition OFF.
- Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures of Air Bag Systems.
- Disconnect: Passenger Seat Side Air Bag C337.
- Connect: Restraint System Diagnostic Service Tool 418-133 to Passenger Seat Side Air Bag C337.
- Disconnect: Passenger Power Seat Motor Assembly C3015.
- WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any air bag module when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
- Connect the battery ground cable.
- Measure voltage between passenger power seat motor assembly C3015-1, circuit 988 (YE/LG) and C3015-7, circuit 989 (RD/LG), harness side while operating the passenger seat control switch front height up and down.




- Is voltage greater than 10 volts when the seat control switch is toggled in both directions and 0 volt in the rest position?

Yes
INSTALL a new power seat track. REFER to Seat Track - Power Seat Track - Power. TEST the system for normal operation.

DISCONNECT the battery ground cable. DISCONNECT the Restraint System Diagnostic Service Tool from passenger seat side air bag module C337. CONNECT passenger seat side air bag module C337. REPOWER the SRS. REFER to Air Bag Systems.

No
GO to G7.

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G7 CHECK CIRCUIT 988 (YE/LG) FOR AN OPEN


- Disconnect: Passenger Seat Control Switch C3190.
- Measure resistance between passenger seat control switch C3190-8, circuit 988 (YE/LG), harness side and passenger power seat motor assembly C3015-1, circuit 988 (YE/LG), harness side.




- Is resistance less than 5 ohms?

Yes
GO to G8.

No
REPAIR the circuit. TEST the system for normal operation.

DISCONNECT the battery ground cable. DISCONNECT the Restraint System Diagnostic Service Tool from passenger seat side air bag module C337. CONNECT passenger seat side air bag module C337. REPOWER the SRS. REFER to Air Bag Systems.

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G8 CHECK CIRCUIT 989 (RD/LG) FOR AN OPEN


- Measure resistance between passenger seat control switch C3190-1, circuit 989 (RD/LG), harness side and passenger power seat motor assembly C3015-7, circuit 989 (RD/LG), harness side.




- Is resistance less than 5 ohms?

Yes
INSTALL a new passenger seat control switch. REFER to Seat Control Switch Seat Control Switch. TEST the system for normal operation.

DISCONNECT the battery ground cable. DISCONNECT the Restraint System Diagnostic Service Tool from passenger seat side air bag module C337. CONNECT driver seat side air bag module C337. REPOWER the SRS. REFER to Air Bag Systems.

No
REPAIR the circuit. TEST the system for normal operation.

DISCONNECT the battery ground cable. DISCONNECT the Restraint System Diagnostic Service Tool from passenger seat side air bag module C337. CONNECT passenger seat side air bag module C337. REPOWER the SRS. REFER to Air Bag Systems.

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G9 CHECK VOLTAGE TO THE HORIZONTAL MOTOR


- Ignition OFF.
- Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures of Air Bag Systems.
- Disconnect: Passenger Seat Side Air Bag C337.
- Connect: Restraint System Diagnostic Service Tool 418-133 to Passenger Seat Side Air Bag C337.
- Disconnect: Passenger Power Seat Motor Assembly C3015.
- WARNING: Make sure no one is in the vehicle and there is nothing blocking or placed in front of any air bag module when the battery is connected. Failure to follow these instructions may result in serious personal injury in the event of an accidental deployment.
- Connect the battery ground cable.
- Measure voltage between passenger power seat motor assembly C3015-3, circuit 987 (RD/WH) and C3015-5, circuit 986 (YE/WH), harness side while operating the seat control switch forward and rearward.




- Is voltage greater than 10 volts when the seat control switch is toggled in both directions and 0 volt in the rest position?

Yes
INSTALL a new power seat track. REFER to Seat Track - Power Seat Track - Power. TEST the system for normal operation.

DISCONNECT the battery ground cable. DISCONNECT the Restraint System Diagnostic Service Tool from passenger seat side air bag module C337. CONNECT passenger seat side air bag module C337. REPOWER the SRS. REFER to Air Bag Systems.

No
GO to G10.

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G10 CHECK CIRCUIT 987 (RD/WH) FOR AN OPEN


- Disconnect: Passenger Seat Control Switch C3190.
- Measure resistance between passenger seat control switch C3190-6, circuit 987 (RD/WH), harness side and driver power seat motor assembly C3015-3, circuit 987 (RD/WH), harness side.




- Is resistance less than 5 ohms?

Yes
GO to G11.

No
REPAIR the circuit. TEST the system for normal operation.

DISCONNECT the battery ground cable. DISCONNECT the Restraint System Diagnostic Service Tool from passenger seat side air bag module C337. CONNECT passenger seat side air bag module C337. REPOWER the SRS. REFER to Air Bag Systems.

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G11 CHECK CIRCUIT 986 (YE/WH) FOR AN OPEN


- Measure resistance between passenger seat control switch C3190-3, circuit 986 (YE/WH), harness side and driver power seat motor assembly C3015-5, circuit 986 (YE/WH), harness side.




- Is resistance less than 5 ohms?

Yes
INSTALL a new passenger seat control switch. REFER to Seat Control Switch Seat Control Switch. TEST the system for normal operation.

DISCONNECT the battery ground cable. DISCONNECT the Restraint System Diagnostic Service Tool from passenger seat side air bag module C337. CONNECT passenger seat side air bag module C337. REPOWER the SRS. REFER to Air Bag Systems.

No
REPAIR the circuit. TEST the system for normal operation.

DISCONNECT the battery ground cable. DISCONNECT the Restraint System Diagnostic Service Tool from passenger seat side air bag module C337. CONNECT passenger seat side air bag module C337. REPOWER the SRS. REFER to Air Bag Systems.

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