Pinpoint Test A: The Power Seat Is Inoperative - Driver
Seats
Pinpoint Tests
Pinpoint Test A: The Power Seat is Inoperative - Driver
Refer to Wiring Diagram Set 120, Power Seats for schematic and connector information. Diagrams By Number
Normal Operation
The seat control switch is supplied battery voltage through circuit 566 (DG) and is grounded by circuit 1205 (BK). The seat control switch then supplies voltage and ground to the appropriate circuits to operate the seat motors.
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Seat control switch
PINPOINT TEST A: THE POWER SEAT IS INOPERATIVE - DRIVER
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.
-------------------------------------------------
A1 CHECK VOLTAGE TO SEAT CONTROL SWITCH CIRCUIT 566 (DG)
- Ignition OFF.
- Depower the SRS. Refer to Supplemental Restraint System (SRS) Depowering and Repowering in the General Procedures of Air Bag Systems.
- Disconnect: Driver Seat Side Air Bag C367.
- Connect: Restraint System Diagnostic Service Tool 418-133 to Driver Seat Side Air Bag C367.
- Disconnect: Driver Seat Control Switch C360.
- 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 driver seat control switch C360-4, circuit 566 (DG), harness side and ground.
- Is voltage greater than 10 volts?
Yes
GO to A2.
No
VERIFY Bussed Electrical Center (BEC) fuse 14 (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. DISCONNECT the Restraint System Diagnostic Service Tool from driver seat side air bag module C367. CONNECT driver seat side air bag module C367. REPOWER the SRS. REFER to Air Bag Systems.
-------------------------------------------------
A2 CHECK SEAT CONTROL SWITCH CIRCUIT 1205 (BK) FOR AN OPEN
- Measure resistance between driver seat control switch C360-2, circuit 1205 (BK), harness side and ground.
- Is resistance less than 5 ohms?
Yes
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 driver seat side air bag module C367. CONNECT driver seat side air bag module C367. 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 driver seat side air bag module C367. CONNECT driver seat side air bag module C367. REPOWER the SRS. REFER to Air Bag Systems.
-------------------------------------------------