Pinpoint Test D: The Power Seat Is Inoperative - Passenger, Without Power Recliner
Seats
Pinpoint Tests
Pinpoint Test D: The Power Seat is Inoperative - Passenger, Without Power Recliner
Refer to Wiring Diagram Set 120, Power Seats for schematic and connector information. Diagrams By Number
Normal Operation
The passenger seat control switch is supplied battery voltage on circuit SBB21 (GY/RD) and ground on circuit GD148 (GK/YE). When pressed, the seat control switch supplies that voltage and ground to the power seat track motor to move the seat. There is one power seat track motor which moves the seat horizontally (forward/rearward). If a new motor needs to be installed, it is necessary to install an entire power seat track.
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Seat control switch
- Power seat motor (seat track)
PINPOINT TEST D: THE POWER SEAT IS INOPERATIVE - PASSENGER, WITHOUT POWER RECLINER
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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D1 CHECK VOLTAGE TO THE PASSENGER SEAT 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 C3227.
- Disconnect: Passenger Safety Belt Buckle Pretensioner C3066.
- Disconnect: Passenger Seat Horizontal Motor C332.
- 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 the voltage between passenger seat horizontal motor C332-2, circuit CPS33 (WH), harness side and C332-1, circuit CPS38 (GN/BU), harness side, while operating the passenger 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 passenger seat track. REFER to Seat Track - Front Seat Track - Front. TEST the system for normal operation.
DISCONNECT the battery ground cable.
CONNECT passenger seat side air bag module C3227.
CONNECT passenger seat safety belt buckle pretensioner C3066.
REPOWER the SRS. REFER to Air Bag Systems.
No
GO to D2.
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D2 CHECK VOLTAGE TO THE PASSENGER SEAT CONTROL SWITCH
- Disconnect: Passenger Seat Control Switch C3190.
- Measure the voltage between passenger seat control switch C3190-4, circuit SBB21 (GY/RD), harness side and ground.
- Is the voltage greater than 10 volts?
Yes
GO to D3.
No
VERIFY Battery Junction Box (BJB) fuse 21 (30A) is OK. If OK, REPAIR the circuit. If not OK, Refer to the Wiring Diagrams to identify the possible causes of the circuit short. TEST the system for normal operation.
DISCONNECT the battery ground cable.
CONNECT passenger seat side air bag module C3227.
CONNECT passenger seat safety belt buckle pretensioner C3066.
REPOWER the SRS. REFER to Air Bag Systems.
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D3 CHECK THE GROUND CIRCUIT FOR AN OPEN
- Measure the resistance between passenger seat control switch C3190-2, circuit GD148 (BK/YE), harness side and ground.
- Is the resistance less than 5 ohms?
Yes
GO to D4.
No
REPAIR the circuit. TEST the system for normal operation.
DISCONNECT the battery ground cable.
CONNECT passenger seat side air bag module C3227.
CONNECT passenger seat safety belt buckle pretensioner C3066.
REPOWER the SRS. REFER to Air Bag Systems.
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D4 CHECK THE HORIZONTAL MOTOR CIRCUIT FOR AN OPEN AND A SHORT TO GROUND
- Measure the resistance between:
- passenger seat control switch: C3190-3, circuit CPS33 (WH), harness side and passenger seat horizontal motor C332-2, circuit CPS33 (WH), harness side.
- passenger seat control switch C3190-3, circuit CPS33 (WH), harness side and ground.
- Is the resistance less than 5 ohms between C3190-3 and C332-2 and greater than 10,000 ohms between C3190-3 and ground?
Yes
GO to D5.
No
REPAIR the circuit. TEST the system for normal operation.
DISCONNECT the battery ground cable.
CONNECT passenger seat side air bag module C3227.
CONNECT passenger seat safety belt buckle pretensioner C3066.
REPOWER the SRS. REFER to Air Bag Systems.
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D5 CHECK THE HORIZONTAL MOTOR CIRCUIT FOR AN OPEN AND A SHORT TO GROUND
- Measure the resistance between:
- passenger seat control switch C3190-6, circuit CPS38 (GN/BU), harness side and passenger seat horizontal motor C332-1, circuit CPS38 (GN/BU), harness side.
- passenger seat control switch C3190-6, circuit CPS38 (GN/BU), harness side and ground.
- Is the resistance less than 5 ohms between C3190-6 and C332-1 and greater than 10,000 ohms between C3190-6 and ground?
Yes
INSTALL a new passenger seat control switch. REFER to Seat Control Switch - Front Seat Control Switch - Front. TEST the system for normal operation.
DISCONNECT the battery ground cable.
CONNECT passenger seat side air bag module C3227.
CONNECT passenger seat safety belt buckle pretensioner C3066.
REPOWER the SRS. REFER to Air Bag Systems.
No
REPAIR the circuit. TEST the system for normal operation.
DISCONNECT the battery ground cable.
CONNECT passenger seat side air bag module C3227.
CONNECT passenger seat safety belt buckle pretensioner C3066.
REPOWER the SRS. REFER to Air Bag Systems.
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