Component Testing

Driver Seat Adjuster Switch 

1. Ignition OFF, disconnect the harness connector at the driver seat adjuster switch.
2. Test for infinite resistance between the control terminals listed below and the B+ terminal A with the switch in the open position.
   • Seat horizontal forward terminal B
   • Seat horizontal rearward terminal C
   • Seat front vertical up terminal D
   • Seat front vertical down terminal E
   • Seat rear vertical up terminal H
   • Seat rear vertical down terminal F
   • If not the specified value, replace the driver seat adjuster switch.
3. Test for less than 2 ohms between the control terminals listed below and the B+ terminal A with the switch in the closed position.
   • Seat horizontal forward terminal B
   • Seat horizontal rearward terminal C
   • Seat front vertical up terminal D
   • Seat front vertical down terminal E
   • Seat rear vertical up terminal H
   • Seat rear vertical down terminal F
   • If greater than the specified range, replace the driver seat adjuster switch.
4. Test for less than 2 ohms between control terminals listed below and the ground terminal G with the switch in the open position.
   • Seat horizontal forward terminal B
   • Seat horizontal rearward terminal C
   • Seat front vertical up terminal D
   • Seat front vertical down terminal E
   • Seat rear vertical up terminal H
   • Seat rear vertical down terminal F
   • If greater than the specified range, replace the driver seat adjuster switch.

Seat Vertical Motor 

1. Ignition OFF, disconnect the harness connector at the appropriate seat motor.
   NOTE: When performing the following tests, make sure that the seat is not all ready in the position the test is attempting to produce.
2. Install a 30A fused jumper wire between the control terminal A and 12 volts. Momentarily install a jumper wire between the control terminal B and ground. The seat vertical motor should momentarily perform the UP function.
   • If the function does not perform as specified, replace the seat vertical motor.
3. Reverse the polarity of jumper wires; the seat vertical motor should perform the DOWN function.
   • If the function does not perform as specified, replace the seat vertical motor.

Seat Horizontal Motor 

1. Ignition OFF, disconnect the harness connector at the seat adjuster switch.
   NOTE: When performing the following tests, make sure that the seat is not all ready in the position the test is attempting to produce.
2. Install a 30A fused jumper wire between the control terminal B and 12 volts. Momentarily install a jumper wire between the control terminal C and ground. The seat horizontal motor should momentarily perform the FORWARD function.
   • If the function does not perform as specified, replace the seat vertical motor.
3. Reverse the polarity of jumper wires; the seat horizontal motor should perform the REARWARD function.
   • If the function does not perform as specified, replace the seat vertical motor.