Diagnostic Aids
| • | Complete the checklist prior to performing the diagnosis: |
| - | When the folding top control switch is pressed, check for driver information center (DIC) warning messages. |
| - | Windows are normalized. Refer to Power Windows Description and Operation . |
| - | Luggage barrier is installed and secured. |
| - | Vehicle is in PARK. |
| - | Press the ignition to ACCY or RUN, with the engine OFF. |
| - | Hydraulic fluid bypass valve in the operating position, turned clockwise, located above the pump motor. |
| - | Operating temperature is normal. |
| • | When using the scan tool, the folding top cover is referenced as the tonneau. |
| • | If a repair is made to a signal circuit for a fault to ground, test the component of that circuit for proper operation. |
| • | Use the scan tool to access the History parameters for the folding top control (FTC) module. The parameters will display the status of the folding top systems last operation. |
Test Description
The numbers below refers to the step numbers on the diagnostic table.
Step | Action | Yes | No | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Folding Top Schematics Connector End View Reference: Folding Top Connector End Views | |||||||||||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |||||||||
2 | Verify that the Power Folding Top Inoperative complaint is present. Does the Power Folding Top System operate as described in the System Description and Operation? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 | ||||||||
3 | Does the folding top cover pull down actuator continuously move up and down? | Go to Folding Top Stowage Compartment Lid Release Inoperative | Go to Step 4 | ||||||||
4 |
Did you find and correct the condition? | Go to Step 29 | Go to Step 5 | ||||||||
5 | From the top closed position, did the folding top start to open then stop? | Go to Step 6 | |||||||||
6 | From the top open position, did the folding top start to close then stop? | Go to Step 7 | |||||||||
7 |
Did the Window Normalization parameter display NO for either module? | Go to Step 8 | |||||||||
8 |
Does the inoperative Top Control Switch parameter change state? | Go to Step 11 | Go to Step 9 | ||||||||
9 |
Does the test lamp illuminate? | Go to Step 10 | Go to Step 24 | ||||||||
10 |
Did the Top Control Switch parameter change state? | Go to Step 20 | Go to Step 17 | ||||||||
11 | If the top is in the open position, did the folding top cover release? | Go to Step 12 | Go to Folding Top Stowage Compartment Lid Release Inoperative | ||||||||
12 |
Can you hear the pump motor respond with each command? | Go to Step 14 | Go to Step 13 | ||||||||
13 |
Does the test lamp illuminate with each command? | Go to Step 22 | Go to Step 18 | ||||||||
With the scan tool command Valve 1 and Valve 2 ON and OFF. Can an audible click be heard from each valve when commanded ON? | Go to Step 28 | Go to Step 15 | |||||||||
15 |
Does the test lamp illuminate when the valve is commanded ON? | Go to Step 16 | Go to Step 19 | ||||||||
16 |
Does the test lamp illuminate when the valve commanded ON? | Go to Step 21 | Go to Step 25 | ||||||||
17 | Test the appropriate switch signal circuit between the folding top control switch and the folding top control (FTC) module for an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 29 | Go to Step 23 | ||||||||
18 | Test the control circuits of the folding top pump motor for a short to ground or open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 29 | Go to Step 23 | ||||||||
19 | Test the control circuit of the inoperative valve for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 29 | Go to Step 23 | ||||||||
20 | Inspect for poor connections at the harness connector of the FTC switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 29 | Go to Step 26 | ||||||||
21 | Inspect for poor connections at the harness connector of the inoperative valve. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 29 | Go to Step 28 | ||||||||
22 | Inspect for poor connections at the harness connector of the folding top pump motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 29 | Go to Step 28 | ||||||||
23 | Inspect for poor connections at the harness connector of the FTC module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 29 | Go to Step 27 | ||||||||
24 | Repair the short to ground or open in the battery positive voltage circuit of the folding top control switch. Refer to Wiring Repairs . Did you find and correct the condition? | Go to Step 29 | -- | ||||||||
25 | Repair the high resistance or open in the ground circuit of the inoperative valve. Refer to Wiring Repairs . Did you find and correct the condition? | Go to Step 29 | -- | ||||||||
26 | Replace the folding top control switch. Refer to Convertible Top Switch Replacement . Did you complete the replacement? | Go to Step 29 | -- | ||||||||
27 | Replace the FTC module. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 29 | -- | ||||||||
28 | Replace the folding top pump, valve, and motor assembly. Refer to Folding Top Pump with Motor Replacement . Did you complete the replacement? | Go to Step 29 | -- | ||||||||
29 |
Did you correct the condition? | System OK | Go to Step 2 | ||||||||
