Enclave AWD V6-3.6L (2009)
module.
6. If all circuits test normal, test or replace the heated and cooled seat switch.
Cooled Seat Malfunction
1. Ignition OFF, disconnect the harness connector at the appropriate seat ventilation heating and cooling module.
2. Test for less than 1 Ohms between the ground circuit terminal C 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 B+ circuit terminal A and ground.
‹› If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
4. Connect a test lamp between the signal circuit terminal B and battery voltage.
5. Press the cooled seat switch through the high, medium, and low positions to OFF. The test lamp should illuminate until the OFF position is
reached.
‹› If the test lamp is always OFF, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the
MSM.
‹› If the test lamp is always ON with the switch in the OFF position, test the signal circuit for a short to ground. If the circuit tests normal, replace
the MSM.
6. Test for 2 k - 20 kOhms between the signal circuit terminal D and the low reference circuit terminal E.
‹› If less than the specified range, test for a short between the signal and low reference circuits. If the circuits test normal, test or replace the
appropriate seat cushion or seat back heater element.
‹› If greater than the specified range, test the signal circuit and the low reference circuit for a short to voltage or an open/high resistance. If the
circuits test normal, test or replace the appropriate seat cushion or seat back heater element.
7. Ignition OFF, connect the harness connector at the seat ventilation heating and cooling module and disconnect the harness connector at the
appropriate seat cushion or seat back heater element.
8. Ignition ON, cooled seat ON, test for 4.8 - 5.2 V between the signal circuit terminal D and ground.
‹› If less than the specified range, test the signal circuit for a short to ground. If the circuit tests normal, replace the seat ventilation heating and
cooling module.
‹› If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the seat ventilation heating
and cooling module.
9. If all circuits test normal, test or replace the seat ventilation heating and cooling module.
Heated and Cooled Seat Switch Indicators Malfunction
1. Ignition OFF, disconnect the harness connector at the appropriate heated and cooled seat switch.
2. Connect a test lamp between the appropriate control circuit terminal listed below and ground:
*
Seat cool mode indicator terminal 9
*
Low indicator terminal 6
*
Medium indicator terminal 8
*
High indicator terminal 10
3. Ignition ON, command the Door Switch Heated Seat Indicators ON and OFF with a scan tool. The test lamp should turn ON and OFF when
changing between the commanded states.
‹› If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the door module.
‹› If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the
door module.
4. If all circuits test normal, test or replace the heated and cooled seat switch.
Component Testing
Heated and Cooled Seat Switch
1. Ignition OFF, disconnect the harness connector at the appropriate heated and cooled seat switch.
2. Test for infinite resistance between the signal circuit terminals listed below and the ground circuit terminal 7 with the switch in the open position:
*
Cooled seat switch signal terminal 5
