Schematic Reference: Sunroof Schematics

DEFINITION: Sunroof does not automatically stop in the flush closed position.

Did you perform the Power Sunroof Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Power Sunroof

2

Operate the power sunroof to the close position.

Does the system close properly?

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Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

1. Turn the ignition ON, with the engine OFF.
2. Operate the sunroof switch to raise the sunroof glass to the vent position.
3. Measure the reference voltage of the sunroof limit switch soft stop signal circuit of the limit switch harness connector to a good ground.

Does the voltage measure near the specified value?

B+

Go to Step 5

Go to Step 4

1. Disconnect the connector to the limit switch.
2. Measure the reference voltage of the sunroof limit switch soft stop signal circuit of the limit switch harness connector to a good ground.

Does the voltage measure near the specified value?

B+

Go to Step 12

Go to Step 9

Measure the reference voltage between the sunroof limit switch soft stop signal circuit and the sunroof limit switch low reference circuit of the limit switch harness connector.

Does the voltage measure near the specified value?

B+

Go to Step 6

Go to Step 7

While measuring the reference voltage between the sunroof limit switch soft stop signal circuit and the sunroof limit switch low reference circuit, toggle the sunroof switch to slide the sunroof glass in small increments, back and forth through the flush closed position.

Did the voltage measure near the specified value as the sunroof past through the flush closed position?

0 V

Go to Step 13

Go to Step 10

Test the sunroof limit switch low reference 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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Go to Step 14

Go to Step 8

Inspect the sunroof limit switch low reference circuit for a poor connection. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 14

Go to Step 13

Test the sunroof limit switch soft stop signal 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?

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Go to Step 14

Go to Step 11

Inspect the limit switch connector for a poor connection. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 14

Go to Step 12

Inspect the limit switch soft stop signal circuit for a poor connection. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 14

Go to Step 13

Replace the sunroof motor. Refer to Power Sunroof Motor Replacement .

Did you complete the replacement?

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Go to Step 14

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Replace the sunroof module. Refer to Power Sunroof Express Module Replacement .

Did you complete the replacement?

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Go to Step 14

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

Did you correct the condition?

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System OK

Go to Step 3