Diagnostic Routine AB

Diagnostic Routine AB

Diagnostic Overview

The Low Washer Fluid Level Message Center Warning Indicator Is Never or Always On

Normal Operation and Fault Conditions

REFER to Low Washer Fluid Message Center Indicator .

Pinpoint Test

1. CHECK THE MESSAGE CENTER WARNING INDICATOR FUNCTION

1. Close all doors, hood and liftgate.

2. Ignition ON.

3. NOTE: If multiple warnings are present, the message center cycles through each of the warning indicators. Allow the message center to cycle through each display while determining whether the door ajar message center warning indicator is active.
Open the driver door while monitoring the door ajar message center warning indicator.

Does the driver door ajar message center warning indicator turn off with the driver door closed and illuminate with the driver door open?








2. CHECK THE LOW WASHER FLUID INDICATOR OPERATION

1. Ignition OFF.

2. Disconnect: Washer Fluid Level Switch.

3. Connect a fused jumper wire:





4. Ignition ON.

5. Wait one minute.

6. Observe the low washer fluid message center indicator.

Is the low washer fluid message center indicator on?








3. CHECK THE WASHER FLUID LEVEL SWITCH GROUND CIRCUIT FOR AN OPEN

1. Measure:





Is the voltage approximately 5 volts or greater?








4. CHECK THE WASHER FLUID LEVEL INPUT CIRCUIT FOR AN OPEN

1. Ignition OFF.

2. Disconnect: IPC (Instrument Panel Cluster).

3. Measure:





Is the resistance less than 3 ohms?








5. CHECK THE WASHER FLUID SWITCH

1. Ignition OFF.

2. Disconnect: Washer Fluid Level Switch.

3. Ignition ON.

4. Wait one minute.

5. Observe the low washer fluid message center indicator.

Did the low washer fluid message center indicator turn off?








6. CHECK THE WASHER FLUID INPUT CIRCUIT FOR A SHORT TO GROUND

1. Ignition OFF.

2. Disconnect: IPC (Instrument Panel Cluster).

3. Measure:





Is the resistance greater than 10,000 ohms?








7. CHECK FOR CORRECT IPC (Instrument Panel Cluster) OPERATION

1. Disconnect and inspect the IPC (Instrument Panel Cluster) connector.

2. Repair:

- corrosion (install new connector or terminals- clean module pins)
- damaged or bent pins- install new terminals/pins
- pushed-out pins- install new pins as necessary

3. Reconnect the IPC (Instrument Panel Cluster) connector. Make sure it seats and latches correctly.

4. Operate the system and determine if the concern is still present

Is the concern still present?