Wipers Inoperative - One or More Modes Front Wiper
Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference: Wiper/Washer Schematics Connector End View Reference: Wiper/Washer Connector End Views | ||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |
2 |
Does the windshield wiper/washer system operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | Are the wipers only inoperative when the washer switch is depressed? | -- | Go to Step 16 | Go to Step 4 |
4 | Are the windshield wipers only inoperative in the high speed mode? | -- | Go to Step 11 | Go to Step 5 |
5 |
Does the test lamp illuminate? | -- | Go to Step 7 | Go to Step 6 |
6 |
Is the resistance within the specified range? | 1700-9500 ohms | Go to Step 17 | Go to Step 24 |
7 | Command the wiper 1 relay ON and OFF by cycling the windshield wiper/washer switch from the High to the Low positions. Do you hear a click when you command the wiper 1 relay ON and OFF? | -- | Go to Step 10 | Go to Step 8 |
8 |
Does the test lamp illuminate? | -- | Go to Step 23 | Go to Step 9 |
9 | Connect a test lamp from the supply voltage circuit of the wiper 1 relay coil to a good ground. Does the test lamp illuminate? | -- | Go to Step 27 | Go to Step 18 |
10 |
Does the test lamp illuminate? | -- | Go to Step 23 | Go to Step 18 |
11 | Command the wiper 2 relay ON and OFF by cycling the windshield wiper/washer switch from the High to the Low positions. Do you hear a click when you command the wiper 2 relay ON and OFF? | -- | Go to Step 14 | Go to Step 12 |
12 |
Does the test lamp illuminate? | -- | Go to Step 23 | Go to Step 13 |
13 | Connect a test lamp from the supply voltage circuit of the wiper 2 relay coil to a good ground. Does the test lamp illuminate? | -- | Go to Step 27 | Go to Step 20 |
14 |
Does the test lamp illuminate? | -- | Go to Step 15 | Go to Step 28 |
15 |
Does the test lamp illuminate? | -- | Go to Step 21 | Go to Step 23 |
16 |
Does the test lamp illuminate? | -- | Go to Step 24 | Go to Step 22 |
17 | Test the signal circuit of the wiper/washer switch for an open or a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 33 | Go to Step 26 |
18 | Test the supply voltage circuit of the wiper 1 relay coil for an open or a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 33 | Go to Step 26 |
19 | Test the low speed circuit of the windshield wiper motor for an open or high resistance. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 33 | Go to Step 25 |
20 | Test the supply voltage circuit of the wiper 2 relay coil for an open or a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 33 | Go to Step 24 |
21 | Test the high speed circuit of the windshield wiper motor for an open or high resistance. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 33 | Go to Step 25 |
22 | Test the control circuit of the windshield washer pump for an open or high resistance. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 33 | Go to Step 26 |
23 | Inspect for poor connections at the inoperative wiper relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | -- | Go to Step 33 | Go to Step 29 |
24 | Inspect for poor connections at the harness connector of the windshield wiper/washer switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | -- | Go to Step 33 | Go to Step 30 |
25 | Inspect for poor connections at the harness connector of the windshield wiper motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | -- | Go to Step 33 | Go to Step 31 |
26 | Inspect for poor connections at the harness connector of the body control module (BCM) . Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | -- | Go to Step 33 | Go to Step 32 |
27 | Repair an open or high resistance in the ground circuit of the inoperative wiper relay coil. Refer to Wiring Repairs or Connector Repairs . Did you complete the repair? | -- | Go to Step 33 | -- |
28 | Repair an open or high resistance in the battery voltage circuit of the wiper 2 relay switched input. Refer to Wiring Repairs or Connector Repairs . Did you complete the repair? | -- | Go to Step 33 | -- |
29 | Replace the inoperative wiper relay. Did you complete the replacement? | -- | Go to Step 33 | -- |
30 | Replace the windshield wiper/washer switch. Refer to Windshield Wiper and Washer Switch Replacement . Did you complete the replacement? | -- | Go to Step 33 | -- |
31 | Replace the windshield wiper motor. Refer to Windshield Wiper Motor Replacement . Did you complete the replacement? | -- | Go to Step 33 | -- |
32 | Replace the BCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | -- | Go to Step 33 | -- |
33 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
Wipers Inoperative - One or More Modes Rear Wiper
Diagnostic Aids
Except for when it is in the Wash mode, the rear window wiper wipes the rear window at delay time intervals. With the rear wiper system activated, the length of time between wipes can be adjusted by selecting any one of the 3 delay speed settings of the windshield wiper switch.
During the Wash mode, if the rear washer switch is momentarily turned to ON, the rear wiper will wipe the rear window 3-5 times and then park. However, if the rear washer switch is held to ON, the rear window wipers will continue to operate until the switch is released.
While the delay speed of both the front and rear wipers is adjusted by the windshield wiper switch selections, the delay time intervals of the rear wiper are not synchronized with the delay time intervals of the front wipers.
The rear wiper should stop at the Park position anytime the rear wiper is not wiping. However, if the ignition switch is turned OFF while the rear wiper is wiping, the wiper will stop at its current location on the glass.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
-
This step will determine if the rear wiper operates properly when only the rear window washer switch is activated. When the rear window washer switch is operated with the rear wiper switch OFF, the rear wiper should wipe the window 3-5 times and then park.
-
This step helps to pinpoint the specific malfunction. The Park mode of the rear window wiper may be the only feature malfunctioning. When the rear wiper switch is ON, the rear wiper should stop at the parked position in between the timed strokes of the wiper. When the rear wiper switch is turned OFF, the rear wiper should park and remain in the parked position until either the wipe or wash mode is operated again.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Wiper/Washer Schematics Connector End View Reference: Master Electrical Component List DEFINITION: The rear wiper is inoperative in one or more modes, however the rear washer still operates. | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
Does the rear window wiper operate? | Go to Step 3 | Go to Step 5 | |
3 |
Does the rear window wiper operate? | Go to Step 4 | Go to Step 7 |
|
Important: Unless the rear window wiper is being operated for the Wash mode, it operates only in the delay modes. When the rear wiper is ON, it should stop at the parked position in between timed strokes of the wiper. When the rear wiper is turned OFF, it should park and remain in the parked position until either the wiper or wash mode is operated again. Does the rear window wiper Park in the full down position as it should? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 9 | |
5 | Turn the rear window washer switch ON. Does the rear window wiper operate? | Go to Step 8 | Go to Step 6 |
6 |
Does the test lamp illuminate? | Go to Step 10 | Go to Step 20 |
7 |
Does the test lamp illuminate? | Go to Step 17 | Go to Step 13 |
8 |
Does the test lamp illuminate? | Go to Step 17 | Go to Step 14 |
9 |
Does the test lamp illuminate? | Go to Step 16 | Go to Step 19 |
10 |
Does the rear wiper operate? | Go to Step 24 | Go to Step 11 |
11 |
Does the test lamp illuminate? | Go to Step 12 | Go to Step 21 |
12 | Connect the test lamp between the rear window wiper motor control circuit and the rear window wiper motor ground circuit. Does the test lamp illuminate? | Go to Step 16 | Go to Step 18 |
13 | Test the rear window washer pump control circuit for an open or a high resistance. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 26 | Go to Step 15 |
14 | Test the rear wiper switch signal circuit for an open or a high resistance. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 26 | Go to Step 15 |
15 | Inspect for poor connections at the harness connector of the windshield wiper washer switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 26 | Go to Step 22 |
16 | Inspect for poor connections at the harness connector of the rear window wiper motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 26 | Go to Step 23 |
17 | Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 26 | Go to Step 25 |
18 | Repair the rear window wiper motor ground circuit for an open or a high resistance. Refer to Circuit Testing and Wiring Repairs . Did you complete the repair? | Go to Step 26 | -- |
19 | Repair the accessory voltage circuit, between the REAR WIPER Relay splice and the wiper motor, for an open or a high resistance. Refer to Circuit Testing and Wiring Repairs . Did you complete the repair? | Go to Step 26 | -- |
20 | Repair the open or high resistance in the accessory voltage feed circuit. Refer to Circuit Testing and Wiring Repairs . Did you complete the repair? | Go to Step 26 | -- |
21 | Repair the open or high resistance in the rear window wiper motor control circuit. Refer to Circuit Testing and Wiring Repairs . Did you complete the repair? | Go to Step 26 | -- |
22 | Replace the windshield wiper washer switch. Refer to Turn Signal Multifunction Switch Replacement . Did you complete the replacement? | Go to Step 26 | -- |
23 | Replace the rear window wiper motor. Refer to Windshield Wiper Motor Replacement . Did you complete the replacement? | Go to Step 26 | -- |
24 | Replace the rear wiper relay. Refer to Relay Replacement . Did you complete the replacement? | Go to Step 26 | -- |
25 | Replace the BCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 26 | -- |
26 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
