For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Wiper/Washer Schematics DEFINITION: This table diagnoses the front wipers inoperative in the LO, HI, and INT modes.
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 ON the ignition, with the engine OFF.
2. Operate the wiper switch to the LO, HI, and INT positions.
3. Verify that the front wipers are inoperative in all modes.

Do the front wipers operate normally?

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

Go to Step 3

3 |

1. Disconnect the front wiper motor connector. Refer to Windshield Wiper Motor Replacement for access.
2. Turn ON the ignition, with the engine OFF.
3. Turn the front wiper switch to the HI position.
4. Test the High speed voltage supply circuit at the wiper motor connector.

Did you measure ignition positive voltage at the wiper motor connector?

Go to Step 5

Go to Step 4

4 |

1. Disconnect the front wiper/washer switch connector. Refer to Windshield Wiper and Washer Switch Replacement for access.
2. Turn ON the ignition, with the engine OFF.
3. Test the voltage supply circuit at the front wiper/washer switch connector. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 6

5 | Test the ground circuit of the wiper motor for a high resistance or an open condition. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 10 | Go to Step 7
6 | Inspect for poor connections at the harness connector of the 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 10 | Go to Step 8
7 | Inspect for poor connections at the harness connector of the 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 10 | Go to Step 9
8 | Replace the front wiper/washer switch. Refer to Windshield Wiper and Washer Switch Replacement . Did you complete the replacement? | Go to Step 10 | --
9 | Replace the front wiper motor. Refer to Windshield Wiper Motor Replacement . Did you complete the replacement? | Go to Step 10 | --
10 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3