Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
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Verification of the fault is present.
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Determining if the sunroof switch is faulty.
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Testing of the close input circuit for a short to ground, which would cause the sunroof module to ignore the open request.
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Prior to inspecting for poor connections at the limit switches you must take note of the color and location of the limit switch connectors. The connectors can be installed in multiply ways causing improper operation of the sunroof.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Did the sunroof operate properly? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | ||
2 | Operate the LF power window switch? Does the window operate? | -- | Go to Diagnostic System Check - Retained Accessory Power in Retained Accessory Power | |
Did the sunroof glass slide closed? | -- | |||
4 |
Does the voltage measure near the specified value? | 4.8 - 5.2V | ||
Measure the reference voltage of the open input signal at the sunroof switch to a known good ground. Does the voltage measure near the specified value? | 4.8 - 5.2V | |||
6 | Measure the reference voltage of the open input circuit and the sunroof switch ground circuit at the sunroof switch connector. Does the voltage measure near the specified value? | 4.8 - 5.2V | ||
7 |
Does the voltage measure near the specified value? | B+ | ||
8 | Test the motor control close circuit for an open, high resistance or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | |||
9 | Test the motor control open circuit for open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
10 |
Does the voltage measure near the specified value? | B+ | ||
11 | Test the vent limit switch input circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
12 | Test the ground circuit for the vent limit switch for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
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Important: When inspecting the limit switches, observe and note the position of the connectors as well as the terminal positions prior to removal of the limit switch harnesses. Inspect for poor connections at the vent limit switch connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | |||
14 |
Does the voltage measure near the specified value? | B+ | ||
15 | Measure the sunroof module battery positive voltage circuit to the ground circuit of the sunroof module. Does the voltage measure near the specified value? | B+ | ||
16 | Inspect for poor connections at the harness connector of the sunroof module battery positive and ground circuit. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
17 | Test the close input circuit for an open, high resistance or a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
18 | Inspect the close input circuit for poor connections. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
19 | Repair the sunroof battery positive voltage circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | -- | |
20 | Repair an open or poor connection in the sunroof ground circuit. Refer to Circuit Testing and Wiring Repairs or Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you complete the repair? | -- | -- | |
21 | Repair the open input circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | -- | |
22 | Test the sunroof switch ground circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
23 | Inspect the sunroof switch ground circuit for poor connections. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
24 | Inspect the for poor connection at the harness connector of the sunroof switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
25 | Replace the sunroof switch. Refer to Sunroof Switch Replacement . Did you complete the repair? | -- | -- | |
26 | Inspect for a poor connection at the sunroof actuator motor connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
27 | Replace the sunroof actuator. Refer to Sunroof Actuator Replacement . Did you complete the repair? | -- | -- | |
28 | Inspect for a poor connection at the harness connector at the sunroof module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | ||
29 | Replace the sunroof module. Refer to Power Sunroof Express Module Replacement . Did you complete the repair? | -- | -- | |
30 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK |
