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For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 2007 🢒 Ascender - 2WD 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Power Window Inoperative - Passenger Door

Diagnostic Aids

Power window motors have a built-in circuit breaker which protects the motor. The circuit breaker may open when there is a window obstruction, binding condition or the power window switch has been activated for an extended period of time. The circuit breaker will reset automatically as the circuit breaker cools, however 5-15 seconds may elapse before the circuit breaker resets.

Step

Action

Yes

No

Schematic Reference: Moveable Window Schematics

Connector End View Reference: Window Systems Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2
  1. Turn ON the ignition, with the engine OFF.
  2. Disable the window lockout function.
  3. Operate the passenger front power window in the UP and DOWN directions from the passenger switch.

Does the passenger front power window operate properly?

Go to Step 3

Go to Step 4

3

Operate the passenger front power window in the UP and DOWN directions from the master switch.

Does the passenger front power window operate properly from the master switch?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 5

4
  1. Install a scan tool.
  2. Monitor the Window Lockout Data parameter in the driver door module (DDM) inputs list.
  3. Activate the window lockout switch to both the ON and OFF positions.

Does the window lockout data parameter change state appropriately?

Go to Step 5

Go to Step 16

5

Monitor the Passenger Front Window Status Data parameter in both the driver and passenger door module (PDM) input lists.

Do either passenger front window status data parameters display an active state without a window switch activation?

Go to Step 6

Go to Step 7

6

Is the active switch displayed in the DDM input list?

Go to Step 16

Go to Step 15

7
  1. Monitor the passenger front window status in the PDM inputs list.
  2. Activate the passenger power switch on the PDM in the up and down positions.

Does the window status data parameter change accordingly?

Go to Step 8

Go to Step 15

8
  1. Monitor the passenger front window status in the DDM inputs list.
  2. Activate the passenger front power window switch on the DDM in the up and down positions.

Does the window status data parameter change accordingly?

Go to Step 9

Go to Step 16

9
  1. Connect a test lamp to a good ground.
  2. Backprobe the battery positive voltage circuit in connector C1 cavity D at the passenger door module.

Does the test lamp illuminate?

Go to Step 10

Go to Step 18

10
  1. Disconnect the passenger front power window motor.
  2. Connect a test lamp to a good ground.
  3. Probe the power window motor up control circuit at the power window motor harness connector.
  4. Activate the power window switch to the UP position.

Does the test illuminate?

Go to Step 11

Go to Step 13

11
  1. With the test lamp still connected to a good ground, probe the power window motor down control circuit.
  2. Activate the power window switch to the DOWN position.

Does the test lamp illuminate?

Go to Step 12

Go to Step 14

12
  1. Connect a test lamp between the power window motor up and down control circuits.
  2. Activate the power window switch to the UP and DOWN positions.

Does the test lamp illuminate in both positions?

Go to Step 17

Go to Step 15

13

Test for an open or short to ground in the power window motor up control circuit. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 22

Go to Step 15

14

Test for an open or short to ground in the power window motor down control circuit. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 22

Go to Step 15

15

Inspect for poor connections at the PDM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 22

Go to Step 19

16

Inspect for poor connections at the DDM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 22

Go to Step 20

17

Inspect for poor connections at the passenger front power window motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 22

Go to Step 21

18

Repair the open or short to ground in the battery positive voltage circuit. Refer to Wiring Repairs .

Did you complete the repair?

Go to Step 22

--

19

Replace the PDM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the repair?

Go to Step 22

--

20

Replace the DDM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the repair?

Go to Step 22

--

21

Replace the passenger front power window motor. Refer to Rear Side Door Window Regulator Replacement .

Did you complete the repair?

Go to Step 22

--

22

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3