B2318

B2318-WIPER HI/LOW CONTROL CIRCUIT HIGH

For the Front/Rear Wipers/Washers circuit diagram Refer to ELECTRICAL/WIPERS/WASHERS - SCHEMATICS AND DIAGRAMS.

For a complete wiring diagram refer to Wiring Section.

B2318-Wiper Hi/Low Control Circuit High:

WHEN MONITORED
- With the ignition on.

SET CONDITION
- When the FCM detects a short/HIGH condition.

POSSIBLE CAUSES
- Wiper high/low relay
- Power distribution center
- Front control module

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

Diagnostic Test

1. INTERMITTENT CONDITION




Turn the ignition on.
With the Scan Tool, clear all FCM DTC's.
Turn the Wipers to Low then High.
With the Scan Tool, read the Wiper DTC's.

Q: Does the Scan Tool read: B2318-WIPER HI/LOW CONTROL CIRCUIT HIGH?

YES: Go To 2
NO: The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform the BODY VERIFICATION TEST - VER 1.

2. WIPER HIGH/LOW RELAY

Turn the ignition off.
Remove the Wiper Hi/Low Relay.
Turn the ignition on.
Activate the Wiper Switch to all speed positions.
With the Scan Tool, read the DTC's.

Q: Does the Scan Tool read: B2318-WIPER HI/LOW CONTROL CIRCUIT HIGH?

YES: Replace the Wiper Hi/Low Relay in accordance with the service information. Perform the BODY VERIFICATION TEST - VER 1.
NO: Go To 3

3. FRONT CONTROL MODULE




Turn the ignition off.
Remove the Wiper Hi/Low Relay.
Disconnect the FCM C3 harness connector.
Measure the voltage between ground and the (W2) Wiper Hi/Low Relay Control circuit in the PDC.

Q: Is there any voltage present?

YES: Replace the Power Distribution Center in accordance with the service information. Perform the BODY VERIFICATION TEST - VER 1.
NO: Replace the Front Control Module in accordance with the service information. Perform the BODY VERIFICATION TEST - VER 1.