Test A: The Wipers Are Inoperative

PINPOINT TEST A: THE WIPERS ARE INOPERATIVE

A1-A2:

A2 Continued:

A2-A3:

A3 Continued:

A3-A4:

A4 Continued:

A4-A5:

A5 Continued:

A5-A6:

A7-A8:

A8-A9:

A9 Continued:

A9-A10:

A11:

Normal Operation
Under normal operation, the multi-function switch is grounded through circuit GD161 (BK/YE). Voltage is supplied to the run/park relay coil and switch through circuit CBP05 (YE). When the SJB commands the wipers ON, ground is provided to the run/park relay coil through circuit RRW24 (GN/VT). When the run/park relay is energized, voltage is sent from the run/park relay to the high/low relay through circuit CRW25 (BU/GY). Voltage is passed through the high/low relay to the wiper motor. Ground for the wiper motor is provided through circuit GD121 (BK/YE).

Possible Causes
- Fuse
- An open in circuit CRW25 (BU/GY), GD161 (BK/YE), GD121 (BK/YE), RRW24 (GN/VT) or CBP05 (YE)
- A short to voltage in circuit RRW24 (GN/VT)
- Wiper high/low relay
- Wiper run/park relay
- Wiper motor
- Multi-function switch
- Smart junction box (SJB)