Test Description
The numbers below refer to the step numbers on the diagnostic table.
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This step checks to see that the door module associated with the inoperative window recognizes the switch input.
Enabling the headlamps in this step eliminates the possibility of the window switch using an alternate path to ground through the switch illumination circuit, which could cause the scan tool to display incorrect window switch states.
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This step identifies the battery positive voltage circuit associated with connectors C2 of the passenger front door module (PDM) and the rear door module (RDM) as the probable cause of the failure. The PDM and the RDM share the battery positive voltage circuit between splice S300 and splice S202. If all 3 of the passenger windows are inoperative, but the drivers window still operates, a failure of the battery positive voltage circuit between splice S300 and splice S202 is the probable cause.
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This step determines if the window switch is the cause of the malfunction.
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This step determines if the battery positive voltage or ground circuits of the passenger door module may be the cause of the malfunction.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Door Control Module Schematics and Power Window Schematics Connector End View Reference: Master Electrical Component List in Wiring Systems Important: This test is to be used to diagnosis a failure of 1 or all of the passenger door windows. | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
Did the parameters change to both the up and down states? | Go to Step 3 | Go to Step 4 | |
Are all of the passenger windows inoperative? | Go to Step 17 | Go to Step 5 | |
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Important:: If the fuse of the 3-amp jumper wire opens when the jumper wire is connected, the switch signal circuit is shorted to battery.
Does the power window switch parameter indicate the inoperative state? | Go to Step 14 | Go to Step 12 | |
5 |
Important: If the inoperative window is a rear door window, probe both battery positive voltage circuits of the harness connector C2.
Does the test lamp illuminate? | Go to Step 6 | Go to Step 17 |
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Important: If the inoperative window is a rear door window, connect the test lamp between each battery positive voltage circuit and each ground circuit of the harness connector C2. Connect a test lamp between the battery positive voltage circuit and the ground circuit of the harness connector C2 of the door module. Does the test lamp illuminate? | Go to Step 7 | Go to Step 18 | |
7 |
Does the test lamp illuminate when you operate the window to the UP position? | Go to Step 8 | Go to Step 10 |
8 |
Does the test lamp illuminate when you operate the window to the DOWN position? | Go to Step 9 | Go to Step 11 |
9 |
Does the test lamp illuminate when you operate the window to both the UP and DOWN positions? | Go to Step 16 | Go to Step 15 |
10 | Test the power window motor up circuit for a short to ground, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 15 |
11 | Test the power window motor down circuit for a short to ground, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 15 |
12 | Test the signal circuits of the inoperative power window switch for an open or a short to battery positive voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 13 |
13 | Test the ground circuit of the inoperative power window switch for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 15 |
14 | Inspect for poor connections at the harness connector of the inoperative power window switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 20 |
15 | Inspect for poor connections at the harness connector of the inoperative passenger door module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 21 |
16 | Inspect for poor connections at the harness connector of the inoperative passenger door power window motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 19 |
17 | Repair the open in the battery positive voltage circuit of the door module harness connector C2. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 22 | -- |
18 | Repair the open in the ground circuit of the door module harness connector C2. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 22 | -- |
19 | Replace the inoperative power window motor. Refer to Power Window Motor Replacement . Did you complete the replacement? | Go to Step 22 | -- |
20 | Replace the inoperative power window switch. Refer to Rear Side Door Window Switch Replacement or Front Door Switch Replacement . Did you complete the replacement? | Go to Step 22 | -- |
21 | Replace the inoperative passenger door module. Refer to Control Module References in Computer/Integrating Systems for replacement, setup and programming. Did you complete the replacement? | Go to Step 22 | -- |
22 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
