For 1990-2009 cars

## Washers Inoperative 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. Press the windshield washer switch.

Do the windshield washers operate normally?

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

Go to Step 3

3 |

1. Disconnect the windshield washer pump connector.
2. Connect a test lamp across the washer pump connector terminals.
3. Turn the ignition ON.
4. Press the windshield washer switch.

Does the test lamp illuminate?

Go to Step 8

Go to Step 4

4 | Test the windshield washer pump ground 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 5
5 | Test the windshield washer pump control circuit for an open, high resistance, or short to ground. 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
6 | 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 10 | Go to Step 7
7 | 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 | --
8 | Inspect for poor connections at the windshield washer pump. 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
9 | Replace the windshield washer pump. Refer to Washer Pump/Reservoir Replacement . Is the repair complete? | 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

## Washers Inoperative With CD4

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

1. Turn the ignition ON.
2. Press the windshield washer switch.

Do the windshield washers operate normally?

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

Go to Step 3

3 |

1. Disconnect the windshield washer pump connector.
2. Connect a test lamp across the washer pump connector terminals.
3. Turn the ignition ON.
4. Press the windshield washer switch.

Does the test lamp illuminate?

Go to Step 7

Go to Step 4

4 | Test the windshield washer pump control and ground circuits 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 13 | Go to Step 5
5 |

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

Does the test lamp illuminate?

Go to Step 9

Go to Step 6

6 | Test the windshield wiper switch signal 1 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 13 | Go to Step 11
7 | Inspect for poor connections at the windshield washer pump. 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 13 | Go to Step 8
8 | Replace the windshield washer pump. Refer to Washer Pump/Reservoir Replacement . Is the repair complete? | Go to Step 13 | --
9 | Inspect for poor connections at the windshield washer pump. 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 13 | Go to Step 10
10 | Replace the windshield wiper motor module. Refer to Windshield Wiper System Module Replacement . Is the repair complete? | Go to Step 13 | --
11 | 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 13 | Go to Step 12
12 | 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 13 | --
13 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3