For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Wiper/Washer System Check? | -- | Go to Step 2 | Go to Wiper/Washer System Check or Wiper/Washer System Check
2 |

1. Disconnect the washer pump connector.
2. Turn the ignition switch to RUN.
3. Connect a test lamp between terminals A and B of the washer pump connector.
4. Activate the wiper/washer switch while observing the test lamp.

Does the test lamp light?

--

Go to Step 3

Go to Step 6

3 | Test for a poor connection at the washer pump connector. Does a poor connection exist? | -- | Go to Step 4 | Go to Step 5
4 | Repair the poor connection at the washer pump connector. Did you complete the repair? | -- | Go to Wiper/Washer System Check or Wiper/Washer System Check | --
5 | Replace the washer pump. Refer to Washer Pump Replacement . Did you complete the repair? | -- | Go to Wiper/Washer System Check or Wiper/Washer System Check | --
6 |

1. Connect a test lamp from the washer pump connector, terminal A, to ground.
2. Activate the washer switch while observing the test lamp.

Does the test lamp light?

--

Go to Step 7

Go to Step 10

7 | Test for a poor connection or an open in CKT 227. Does a poor connection or an open exist? | -- | Go to Step 8 | Go to Step 9
8 | Repair the open or poor connection in CKT 227. Did you complete the repair? | -- | Go to Wiper/Washer System Check or Wiper/Washer System Check | --
9 | Replace the wiper motor. Refer to Windshield Wiper Motor Replacement . Did you complete the repair? | -- | Go to Wiper/Washer System Check or Wiper/Washer System Check | --
10 | Connect a test lamp from the wiper motor connector C1, terminal D, to ground. Did the test lamp light? | -- | Go to Step 11 | Go to Step 12
11 | Repair the open or poor connection in CKT 228. Did you complete the repair? | -- | Go to Wiper/Washer System Check or Wiper/Washer System Check | --
12 |

1. Turn the ignition switch to RUN.
2. Backprobe from the wiper motor connector C1, terminal F, to ground using a J 39200.
3. Activate the washer switch while observing the J 39200.

Is the measurement within the specified values?

10.5-15 V

Go to Step 13

Go to Step 16

13 | Test for a poor connection at the wiper motor connector. Does a poor connection exist? | -- | Go to Step 14 | Go to Step 15
14 | Repair the poor connection at the wiper motor connector. Did you complete the repair? | -- | Go to Wiper/Washer System Check or Wiper/Washer System Check | --
15 | Replace the wiper motor cover. Refer to Wiper Motor Cover Replacement . Did you complete the repair? | -- | Go to Wiper/Washer System Check or Wiper/Washer System Check | --
16 |

1. Backprobe from the wiper/washer switch connector, terminal E or terminal C (Buick pulse), to ground using a J 39200.
2. Activate the washer switch while observing the J 39200.

Is the measurement within the specified values?

10.5-15 V

Go to Step 17

Go to Step 18

17 | Repair the open in CKT 94. Did you complete the repair? | -- | Go to Wiper/Washer System Check or Wiper/Washer System Check | --
18 | Replace the wiper/washer switch. Refer to Windshield Wiper and Washer Switch Replacement - On Vehicle . Did you complete the repair? | -- | Go to Wiper/Washer System Check or Wiper/Washer System Check | --