Component Testing
WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
Seat Adjuster Switch Test
- Ignition OFF, disconnect the harness connector at the S64 Seat Adjuster Switch.
- Test for infinite resistance between the B+ terminal and each control terminal with the switch in the open position.
- If less than infinite resistance
Replace the S64 Seat Adjuster Switch.
- If infinite resistance
- If less than infinite resistance
- Test for less than 2 Ω between the B+ terminal and each control terminal with the appropriate switch in the closed position.
- If 2 Ω or greater
Replace the S64 Seat Adjuster Switch.
- If less than 2 Ω
- If 2 Ω or greater
- Test for less than 2 Ω between the ground terminal and each control terminal with the switch in the open position.
- If 2 Ω or greater
Replace the S64 Seat Adjuster Switch.
- If less than 2 Ω
- If 2 Ω or greater
- All OK.
Seat Motor
- Ignition OFF, disconnect the harness connector at the appropriate seat motor listed below:
- M51 Seat Horizontal Motor
- M50 Seat Front Vertical Motor (with 8-way seat)
- M55 Seat Rear Vertical Motor (with 8-way seat)
- M57 Seat Vertical Motor (with 6-way seat)
- M56 Seat Recline Motor
- Install a 30 A fused jumper wire between control terminal 1 and 12 V.
- Momentarily install a jumper wire between control terminal 3 and ground. The seat motor should momentarily perform the appropriate FORWARD/ REARWARD/ UP/ DOWN function.
- If the motor does not perform the FORWARD/ REARWARD/ UP/ DOWN function
Replace the motor.
- If the motor performs the FORWARD/ REARWARD/ UP/ DOWN function
- If the motor does not perform the FORWARD/ REARWARD/ UP/ DOWN function
- Reverse the jumper wires; the motor should perform FORWARD/ REARWARD/ UP/ DOWN function.
- If the motor does not perform the FORWARD/ REARWARD/ UP/ DOWN function
Replace the motor.
- If the motor performs the FORWARD/ REARWARD/ UP/ DOWN function
- If the motor does not perform the FORWARD/ REARWARD/ UP/ DOWN function
- All OK.
NOTE:
When performing the following tests, make sure that the seat is not already in the position the test is attempting to produce.