Circuit/System Testing

Seat Adjuster Switch Circuit Test

1. Ignition OFF, disconnect the harness connector at the seat adjuster switch.
2. Test for less than 5 Ω between the ground circuit terminal B and ground.
   • If greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates between the appropriate B+ circuit terminal listed below and ground:
   • 6-way power seat terminal D
   • 8-way power seat terminal E
   • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
4. If all circuits test normal, test or replace the seat adjuster switch.

Recliner Motor Circuit Test

1. Ignition OFF, disconnect the harness connector at the seat recline motor.
2. Connect that a test lamp between control circuit terminal 1 and control circuit terminal 2.
3. Ignition ON, command the seat recline motor Forward and Rearward using the seat adjuster switch. The test lamp should turn ON when commanding the forward and rearward states.
   • If the test lamp remains OFF for either of the commands, test the control circuits for a short to ground or an open/high resistance. If the circuits test normal, test or replace the seat adjuster switch.
4. If all circuits test normal, test or replace the seat recline motor.

Seat Adjuster Motor Circuit Test (Without HP2)

1. Ignition OFF, disconnect the harness connector at the seat adjuster assembly.
2. Connect a test lamp between the appropriate control circuit terminals listed below:
   • Seat horizontal motor terminal 3 and terminal 6
   • Seat front vertical motor terminal 2 and terminal 5
   • Seat rear vertical motor terminal 1 and terminal 4
3. Ignition ON, command the seat motor Up and Down or Forward and Rearward using the seat adjuster switch. The test lamp should turn ON when commanding the up and down or forward and rearward states.
   • If the test lamp remains OFF for either of the commands, test the control circuits for a short to ground or an open/high resistance. If the circuits test normal, test or replace the seat adjuster switch.
4. If all circuits test normal, test or replace the seat adjuster assembly.

Power Seat Adjuster Motor Circuit Test (With HP2)

1. Ignition OFF, disconnect the harness connector at the appropriate seat motor.
2. Connect a test lamp between control circuit terminal 1 and control circuit terminal 2.
3. Ignition ON, command the appropriate seat motor Up and Down or Forward and Rearward using the seat adjuster switch. The test lamp should turn ON when commanding the up and down or forward and rearward states.
   • If the test lamp remains OFF for either of the commands, test the control circuits for a short to ground or an open/high resistance. If the circuits test normal, test or replace the seat adjuster switch.
4. If all circuits test normal, test or replace the seat motor.