For 1990-2009 cars

### 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 Diagnostic Aids | Go to Step 3
3 |

1. Turn the ignition ON, with the engine OFF.
2. Operate the sunroof switch to slide the sunroof glass to the flush close position.
3. Disconnect the sunroof module harness connector that contains the sunroof limit switch soft stop signal circuit.
4. Measure the resistance between the sunroof limit switch soft stop signal circuit and the sunroof limit switch low reference circuit at the sunroof module harness connector.

Does the resistance measure near the specified value?

1 3 ohms

Go to Step 5

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 6
5 | Replace the sunroof limit switch. Refer to Sunroof Actuator 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 |

1. Turn OFF the ignition.
2. Reconnect all previously disconnected components.
3. Turn ON the ignition, with the engine OFF.
4. Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 3