Test Description
WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
The numbers below refer to the step numbers on the diagnostic table.
- 3: This step tests for the proper operation of the circuit in the high voltage range.
- 4: This step tests for the proper operation of the circuit in the low voltage range. If the fuse in the jumper opens upon performing this test, the signal circuit has a short to voltage.
DTC B1925 or B2170: Seat Heater Sensor Or Sensor Circuit
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Driver Seat Schematics or Passenger Seat Schematics Connector End View Reference: Power Seat Systems Connector End Views |
||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | - | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 |
|
10 V | Go to Step 3 | Go to Step 5 |
| 3 | Measure the voltage between the temperature sensor signal circuit and the temperature sensor low reference circuit. Does the voltage measure near the specified value? |
10 V | Go to Step 4 | Go to Step 7 |
| 4 | Measure the resistance between the temperature sensor signal circuit and the temperature sensor low reference circuit. Does the resistance measure within the specified range? |
535-168,000 Ω | Go to Step 9 | Go to Step 8 |
| 5 | Test the temperature sensor signal circuit between the body control module (BCM) and the sensor connector for a short to ground. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 6 |
| 6 | Test the temperature sensor signal circuit for a high resistance or an open. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 11 |
| 7 | Test the low reference circuit of the temperature sensor for a high resistance or an open. Refer to Circuit Testing
andWiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 11 |
| 8 | Test the temperature sensor signal circuit for a short to battery positive voltage. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 10 |
| 9 | Test the temperature sensor signal circuit between the sensor connector and the temperature sensor for a short to ground. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 11 |
| 10 | Inspect for poor connections at the harness connector of the heated seat temperature sensor. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 12 |
| 11 | Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 13 |
| 12 | Replace the heated seat temperature sensor/heater element assembly. Refer to Seat Back Heater Element Replacement - Front and Seat Cushion Heater Element Replacement - Front . Did you complete the replacement? |
- | Go to Step 14 | - |
| 13 | Replace the BCM. Refer to Control Module References
in Computer/Integrating Systems for replacement, setup and programming. Did you complete the replacement? |
- | Go to Step 14 | - |
| 14 |
|
- | Go to Step 2 | System OK |