For 1990-2009 cars

## Wipers Blades Do Not Park Without CD4

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 ON.
2. Operate the windshield wiper/washer switch to the LO position.
3. Operate the windshield wiper/washer switch to the OFF position.

Do the windshield wiper arms return to the park position and stop?

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

Go to Step 3

3 |

1. Turn the ignition ON.
2. Operate the windshield wiper/washer switch to the LO position.
3. Operate the windshield wiper/washer switch to the OFF position while the wiper arms are up.
4. Using a test lamp connected to ground backprobe the windshield wiper motor park switch signal circuit terminal in the windshield wiper/washer switch connector.

Does the test lamp illuminate?

Go to Step 8

Go to Step 4

4 |

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

Does the test lamp illuminate?

Go to Step 5

Go to Step 6

5 | Test the windshield wiper motor park switch signal circuit for an open or high resistance. 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 | Repair the open or high resistance in the accessory voltage supply circuit to the windshield wiper motor. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Is the repair complete? | Go to Step 10 | --
7 | 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 11 | Go to Step 8
8 | Replace the windshield wiper motor. Refer to Windshield Wiper Motor Replacement . Is the repair complete? | Go to Step 10 | --
9 | 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 11 | Go to Step 10
10 | Replace the windshield wiper/washer switch. Refer to Turn Signal Multifunction Switch Replacement in Steering Wheel and Column. Is the repair complete? | Go to Step 10 | --
11 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3