Diagnostic Aids
The sunroof limit switch soft stop signal circuit can cause the sunroof glass to hard stop past the soft stop open position, if it were a short to ground or a faulty limit switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. If the circuits test OK, an intermittent or poor connection can also cause the sunroof not to operate normally. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Sunroof Schematics DEFINITION: The sunroof will hard stop past the full open soft stop position. | ||||
1 | Did you review the Power Sunroof Description and Operation and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms - Roof |
2 | Operate the power sunroof. Does the system operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Does the voltage measure near the specified value? | 4.5-5.5 V | Go to Step 6 | Go to Step 4 |
4 | Test the sunroof limit switch soft stop signal circuit for a short to ground. Did you find and correct the condition? | -- | Go to Step 7 | Go to Step 5 |
5 | Replace the sunroof opening position switch. Refer to Sunroof Position Encoding System Switch Replacement . Did you complete the replacement? | -- | Go to Step 7 | -- |
6 | Replace the sunroof module. Refer to Power Sunroof Express Module Replacement . Did you complete the replacement? | -- | Go to Step 7 | -- |
7 |
Did you correct the condition? | -- | System OK | Go to Step 3 |
