Step | Action | Values | Yes | No |
---|---|---|---|---|
Schematic Reference: Wiper/Washer Schematics. Connector End View Reference: Component Connector End Views . | ||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |
2 |
Does the windshield Wiper/Washer system operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | Are the wipers inoperative in the low speed mode? | -- | Go to Step 15 | Go to Step 4 |
4 | Are the wipers inoperative in the high speed mode? | -- | Go to Step 6 | Go to Step 5 |
5 |
Is the resistance for the INT switch position within the specified range? | INT 700-4000 Ω | Replace the BCM. Refer to Control Module References. | Replace the Wiper/Washer switch. Windshield Wiper and Washer Switch Replacement. |
6 |
Does the test lamp illuminate? | -- | Go to Step 13 | Go to Step 7 |
7 | Connect a test lamp from the supply voltage circuit of the front wiper high relay coil to a good ground. Does the test lamp illuminate? | -- | Go to Step 8 | Repair an open or high resistance in the battery voltage circuit of the front wiper high relay switched input. Refer to Wiring Repairs or Connector Repairs. |
8 | Measure the resistance of the front windshield wiper switch high signal circuit between the underhood body electrical centre (UBEC) and the body control module (BCM). Is the resistance within the specified range? | Continuity | Go to Step 10 | Go to Step 9 |
9 | Repair an open or high resistance in the ground circuit of the inoperative wiper relay coil. Refer to Wiring Repairs or Connector Repairs. Did you correct the condition? | -- | System OK | Replace the BCM. Refer to Control Module References |
10 |
Is the resistance for the HIGH switch position within the specified range? | HIGH 300-350 Ω | Go to Step 11 | Replace the Wiper/Washer switch. Refer to Windshield Wiper and Washer Switch Replacement. |
11 | Measure the resistance of the Wiper/Washer switch from the windshield wiper switch high signal circuit to the return circuit. Is the resistance for the HIGH switch position within the specified range? | Continuity | Go to Step 12 | Replace the Wiper/Washer switch. Refer to Windshield Wiper and Washer Switch Replacement. |
12 | Measure the resistance of the windshield wiper switch high signal circuit between the Wiper/Washer switch and the body control module (BCM). Is the resistance within the specified range? | Continuity | Replace the BCM. Refer to Control Module References. | Repair an open or high resistance in the windshield wiper switch high signal circuit. Refer to Wiring Repairs or Connector Repairs. |
13 | Install a 30-A fusible link wire between the relay supply voltage circuit and the wiper motor high speed circuit. Does the wiper motor activate? | -- | Replace the inoperative front wiper high relay. | Go to Step 14 |
14 | Test the high speed circuit of the wiper motor for an open or high resistance. Refer to Circuit Testing and Wiring Repairs. Did you find and correct the condition? | -- | System OK | Replace the windshield wiper motor. Refer to Windshield Wiper System Module Replacement. |
15 |
Are the resistances for the INT and LOW switch positions within the specified range? | LOW 300-350 Ω INT 700-4000 Ω | Go to Step 16 | Replace the Wiper/Washer switch. Refer to Windshield Wiper and Washer Switch Replacement. |
16 | Measure the resistance of the windshield wiper switch low signal circuit between the Wiper/Washer switch and the body control module (BCM). Is the resistance within the specified range? | Continuity | Go to Step 17 | Repair an open or high resistance in the windshield wiper switch low signal circuit. Refer to Wiring Repairs or Connector Repairs. |
17 |
Does the test lamp illuminate? | -- | Replace the windshield wiper motor. Refer to Windshield Wiper and Washer Switch Replacement. | Go to Step 18 |
18 | Measure the resistance of the windshield wiper motor low speed circuit between the UBEC and the windshield wiper motor. Is the resistance within the specified range? | Continuity | Replace the inoperative front wiper high relay. | Go to Step 19 |
19 | Repair an open or high resistance in the windshield wiper motor low speed circuit. Refer to Wiring Repairs or Connector Repairs. Did you correct the condition? | -- | System OK | Replace the BCM. Refer to Control Module References. |