For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Wiper/Washer Schematics
1 | Did you review the Wiper/Washer System Description and Operation and perform the necessary inspections? | Go to Step 2 | Go to Symptoms - Wiper/Washer Systems
2 |

1. Turn the ignition switch ON.
2. Turn the windshield wiper/washer switch through all the switch positions.

Does the windshield wiper/washer system operate normally?

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

Go to Step 3

3 |

1. Disconnect the windshield wiper motor connector.
2. Connect a test lamp from the accessory voltage supply circuit terminal in the harness connector to ground.
3. Turn the ignition ON.

Does the test lamp illuminate?

Go to Step 4

Go to Step 7

4 |

1. Connect a test lamp from the accessory voltage supply circuit terminal to the ground circuit terminal in the windshield wiper motor harness connector.
2. Turn the ignition ON.

Does the test lamp illuminate?

Go to Step 5

Go to Step 8

5 |

1. Connect the test lamp from the windshield wiper switch signal 2 circuit terminal in the windshield wiper motor harness connector to ground.
2. Turn the ignition ON.
3. Press the windshield washer switch.

Does the test lamp illuminate?

Go to Step 10

Go to Step 6

6 |

1. Disconnect the windshield wiper/washer switch connector.
2. Connect a test lamp from the accessory voltage supply circuit terminal in the windshield wiper/washer switch harness connector to ground.
3. Turn the ignition ON.

Does the test lamp illuminate?

Go to Step 12

Go to Step 9

7 | Repair the windshield wiper motor accessory voltage supply circuit for an open or short to ground. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | Go to Step 14 | --
8 | Repair the windshield wiper motor ground circuit for an open or high resistance. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | Go to Step 14 | --
9 | Repair the windshield wiper/washer switch accessory voltage supply circuit for an open or high resistance. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | Go to Step 14 | --
10 | Inspect for poor connections at the windshield wiper 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 14 | Go to Step 11
11 | Replace the windshield wiper motor. Refer to Windshield Wiper Motor Replacement . Is the repair complete? | Go to Step 14 | --
12 | 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 14 | Go to Step 13
13 | Replace the windshield wiper/washer switch. Is the repair complete? | Go to Step 14 | --
14 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3