For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Was the Wiper/Washer System Check performed? | -- | Go to Step 2 | Go to Wiper/Washer System Check
2 | Determine if the windshield wipers are always on, or if the windshield wipers cycle once when the ignition is turned to the ON position. Are the windshield wipers always on? | -- | Go to Step 3 | Go to Step 4
3 |

1. Turn the ignition switch to the ON position.
2. Turn the windshield wiper/washer switch to the OFF position.
3. Disconnect the windshield wiper motor connector.
4. Use a DMM in order to measure the voltage between terminal E of the windshield wiper motor connector and a known good ground.

Does the voltage measure at the specified value?

B+

Go to Step 5

Go to Step 6

4 |

1. Turn the ignition switch to the ON position.
2. Disconnect the windshield wiper motor connector.
3. Use a DMM in order to measure the voltage between terminal D of the windshield wiper motor connector and a known good ground.

Does the voltage measure at the specified value?

B+

Go to Step 13

Go to Step 14

5 |

1. Locate a short to B+ in CKT M9 and/or in CKT M808.
2. Repair the short to B+ in CKT M9 or in CKT M808.
3. If the CKTs are OK, replace the windshield wiper/washer switch. Refer to Windshield Wiper and Washer Switch Replacement - On Vehicle in Steering.

Is the repair complete?

--

Go to Step 15

--

6 |

1. Turn the ignition switch to the OFF position.
2. Disconnect the windshield wiper motor relay K8 connector.
3. Reconnect the windshield wiper motor connector.
4. Turn the ignition switch to the ON position.

Does the windshield wiper motor operate?

--

Go to Step 7

Go to Step 8

7 |

1. Locate a short to B+ in CKT B7, CKT B810, or CKT P2.
2. Repair the short to B+ in CKT B7, CKT B810, or CKT P2.
3. If these circuits are OK, replace the windshield wiper/washer switch. Refer to Windshield Wiper and Washer Switch Replacement - On Vehicle in Steering.
4. Note: A short to B+ on circuit P2 will also cause the windshield wiper motor relay K8 to fail.

Is the repair complete?

--

Go to Step 15

--

8 | Use the DMM in order to measure the voltage between terminal 1 of the windshield wiper motor relay K8 and ground. Does the voltage measure at the specified value? | B+ | Go to Step 9 | Go to Step 10
9 |

1. Locate a short to B+ in any of the following circuits:

• | CKT FB1

• | CKT FB3

• | CKT FM99

2. Repair any shorts to B+ in the CKTs.
3. If the CKTs are OK, replace the windshield wiper/washer switch. Refer to Windshield Wiper and Washer Switch Replacement - On Vehicle in Steering.

Is the repair complete?

--

Go to Step 15

--

10 |

1. Reconnect all of the disconnected connectors.
2. With the wipers operating, use a test light to backprobe the windshield wiper motor relay K8 terminal 5 placing the other test light lead to B+ .
3. The wiper motor sends a ground signal to the windshield wiper motor relay K8 when the wipers enter the park position.

Does the test light flash when the wipers enter the park position?

--

Go to Step 11

Go to Step 12

11 | Replace the windshield wiper motor relay K8. Is the repair complete? | -- | Go to Step 15 | --
12 |

1. Locate an open or a short to B+ in CKT U6 and/or in CKT U10.
2. Repair any open or short to B+ in CKT U6 or in CKT U10.
3. If the CKTs are OK, replace the windshield wiper motor. Refer to Windshield Wiper Motor Replacement .

Is the repair complete?

--

Go to Step 15

--

13 | Replace the windshield wiper motor. Refer to Windshield Wiper Motor Replacement . Is the repair complete? | -- | Go to Step 15 | --
14 |

1. Locate an open in CKT FY2.
2. Repair the open circuit in CKT FY2.

Is the repair complete?

--

Go to Step 15

--

15 |

1. Reconnect all of the connectors and the components that were disconnected.
2. Verify that the windshield wipers operate properly.

Do the windshield wipers operate properly?

--

Go to Wiper/Washer System Check

Go to Step 1