For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Wiper/Washer Schematics DEFINITION: This table diagnoses the washer pump inoperative and assumes that the wipers operate normally.
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. Pull the washer switch to the wash position and verify that the washers are inoperative.

Do the washers operate normally?

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

Go to Step 3

3 |

1. Disconnect the washer pump. Refer to Washer Pump Replacement for access.
2. Turn ON the ignition, with the engine OFF
3. Connect a test lamp between cavity 2 of the washer pump connector and a good ground.

Does the test lamp illuminate?

Go to Step 4

Go to Step 8

4 |

1. Pull the washer switch to the wash position and hold.
2. Test the ground circuit at the washer pump connector for a high resistance or an open.

Did you measure a high resistance or an open?

Go to Step 9

Go to Step 7

5 |

1. Disconnect the wiper/washer switch. Refer to Windshield Wiper and Washer Switch Replacement for access.
2. Pull the washer switch to the wash position and hold.
3. Test the washer switch between terminal 2 and terminal 11 for an open.

Does the washer switch test open when the washer switch is pulled to the wash position?

Go to Step 6

Go to Step 9

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 12 | Go to Step 10
7 | Inspect for poor connections at the harness connector of the 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 12 | Go to Step 11
8 | Repair the open in the voltage supply circuit of the washer pump. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 12 | --
9 | Repair the open in the ground circuit between cavity 1 of the windshield washer pump connector and ground. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 12 | --
10 | Replace the wiper/washer switch. Refer to Windshield Wiper and Washer Switch Replacement . Did you complete the replacement? | Go to Step 12 | --
11 | Replace the washer pump. Refer to Washer Pump Replacement . Did you complete the replacement? | Go to Step 12 | --
12 | Operate the washers in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3