For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Wiper/Washer Schematics Connector End View Reference: Master Electrical Component List in Wiring Systems
1 | Did you perform the Wiper/Washer Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Wiper/Washer
2 |

1. Turn the ignition ON.
2. Turn the front and rear windshield wiper switch OFF.

Do the windshield wipers remain in the park position?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3 | Are the rear wipers always on? | Go to Step 4 | Go to Step 7
4 |

1. Turn OFF the ignition.
2. Disconnect the rear wiper relay.
3. Turn the ignition ON.

Do the rear wipers remain in the park position?

Go to Step 5

Go to Step 6

5 |

1. Turn OFF the ignition.
2. Connect a test lamp from the rear wiper relay control circuit and the battery side of the relay.
3. Turn the ignition ON.

Does the test lamp illuminate?

Go to Step 8

Go to Step 15

6 | Test the rear wiper motor control circuit for a short to voltage. Did you find and correct the condition? | Go to Step 19 | Go to Step 16
7 |

1. Turn OFF the ignition.
2. Disconnect the harness connector of the windshield wiper/washer switch.
3. Turn the ignition ON.

Do the wipers stop?

Go to Step 11

Go to Step 10

8 |

1. Turn OFF the ignition.
2. Disconnect the harness connector C2 of the body control module (BCM).
3. Turn the ignition ON.
4. Connect a test lamp from the rear wiper input control circuit and a good ground.

Does the test lamp illuminate?

Go to Step 9

Go to Step 13

9 |

1. Turn OFF the ignition.
2. Disconnect the harness connector of the windshield wiper/washer switch.
3. Test the rear wiper input control circuit for a short to voltage.

Did you find and correct the condition?

Go to Step 19

Go to Step 14

10 | Test the high front wiper control circuit and the LOW/MIST front wiper control circuit for a short to voltage. Did you find and correct the condition? | Go to Step 19 | Go to Step 16
11 |

1. Turn OFF the ignition.
2. Reconnect the windshield wiper/washer switch connector.
3. Disconnect the BCM connector C2.
4. Turn the ignition ON.

Do the wipers stop?

Go to Step 13

Go to Step 12

12 | Test the front wiper input control circuit for a short to voltage. Did you find and correct the condition? | Go to Step 19 | Go to Step 14
13 | Inspect for poor connections at the BCM. 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 19 | Go to Step 18
14 | Inspect for poor connections at the windshield wiper/washer 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 19 | Go to Step 17
15 | Replace the rear wiper relay. Refer to Relay Replacement in Wiring Systems. Did you complete the replacement? | Go to Step 19 | --
16 | Replace the wiper motor. Refer to Windshield Wiper Motor Replacement . Did you complete the replacement? | Go to Step 19 | --
17 | Replace the windshield wiper/washer switch. Refer to Turn Signal Multifunction Switch Replacement in Steering Wheel and Column. Did you complete the replacement? | Go to Step 19 | --
18 | Important: Perform the programming or set up procedure for the replaced control module if required. Replace the BCM. Refer to Body Control Module Replacement in Body Control System for applicable replacement procedure. Did you complete the replacement? | Go to Step 19 | --
19 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2