Schematic Reference: Sunroof Schematics

Connector End View Reference: Power Roof Systems Connector End Views

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

Did you review the Sunroof Description and Operation?

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Go to Step 2

Go to Sunroof Description and Operation

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 ON the ignition, with the engine OFF.
2. Probe the supply side of the SUNRF fuse with a test lamp that is connected to a good ground.

Does the test lamp illuminate?

B+

Go to Step 4

Go to Diagnostic System Check - Retained Accessory Power in Retained Accessory Power

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 harness connector to a good ground.

Does the voltage measure near the specified value?

B+

Go to Step 6

Go to Step 5

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

Does the voltage measure near the specified value?

B+

Go to Step 13

Go to Step 10

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

Does the voltage measure near the specified value?

0 V

Go to Step 7

Go to Step 8

1. Measure the reference voltage between the sunroof limit switch soft stop signal circuit and the sunroof limit switch low reference circuit.
2. Operate the sunroof switch to slide the sunroof in small increments, back and forth through the flush closed position.
3. While operating the sunroof switch, observe the reference voltage.

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

0 V

Go to Step 14

Go to Step 11

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 15

Go to Step 9

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 15

Go to Step 14

Test the sunroof limit switch soft stop signal circuit for an open, a high resistance or a 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 15

Go to Step 12

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 15

Go to Step 13

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 15

Go to Step 14

Replace the sunroof motor. Refer to Sunroof Motor/Actuator Replacement .

Did you complete the replacement?

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Go to Step 15

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Replace the sunroof module. Refer to Sunroof Control Module Replacement .

Did you complete the replacement?

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Go to Step 15

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

Did you correct the condition?

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System OK

Go to Step 3