Circuit/System Testing

B2345 00 

1. Ignition OFF, disconnect the (X1) harness connector at the heated seat module.
2. Test for infinite resistance between the left seat heating element supply voltage circuit terminal 3 and ground.
   • If less than the specified range, test the control circuit for a short to ground.
3. Test for infinite resistance between the control circuit terminal 6 and ground.
   • If less than the specified range, test the control circuit for a short to ground.
4. Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal 3 and ground.
   • If the test lamp illuminates, test the control circuit for a short to voltage.
5. Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal 6 and ground.
   • If the test lamp illuminates, test the control circuit for a short to voltage.
6. If all circuits test normal, replace the heated seat module.

B2345 13 

1. Ignition OFF, disconnect the (X2, X4) harness connector at the heated seat module.
2. Test for greater than 1.9K ohms between the signal and low reference circuits listed below:
   • Driver seat cushion terminal 9 (X4) and terminal 6 (X2)
   • Passenger seat cushion terminal 20 (X4) and terminal 8 (X2)
     • If less than the specified range, test for a short between the signal and low reference circuits. If the circuits test normal, replace the appropriate seat temperature sensor.
3. If all circuits test normal, replace the heated seat module.