Test Description
WARNING: This page is about a different car, the 2007 Saturn Vue. 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.
- 2: The normal operating voltage of the I/P dimmer switch is 0.4-4.5 volts.
- 3: This step determines if there is a problem with the dimmer switch.
DTC B2622
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Interior Lights Dimming Schematics | ||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | - | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 |
|
0.4-4.5 V | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
| 3 |
|
4.5 V | Go to Step 5 | Go to Step 4 |
| 4 | Test the 5-volt reference circuit and the I/P lamps dimmer switch signal circuit for an open, high resistance, or short to ground. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
- | Go to Step 9 | Go to Step 6 |
| 5 | Inspect for poor connections at the harness connector of the I/P dimmer switch. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
- | Go to Step 9 | Go to Step 7 |
| 6 | Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
- | Go to Step 9 | Go to Step 8 |
| 7 | Replace the I/P dimmer switch. Did you complete the replacement? |
- | Go to Step 9 | Go to Step 9 |
| 8 | Replace the. Refer to Control Module References
for replacement, setup, and programming. Did you complete the replacement? |
- | Go to Step 9 | - |
| 9 |
|
- | Go to Step 2 | System OK |