Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Low Washer Fluid Indicator Signal | 1 | 2 | -- | -- |
Windshield Washer Fluid Level Switch Ground | -- | 1 | -- | -- |
1. Low washer fluid indicator inoperative 2. Low washer fluid indicator always on | ||||
Circuit/System Description
The low washer fluid indicator is located in the instrument panel cluster (IPC). Ground is applied at all times from G100 through the windshield washer fluid level switch and the low washer fluid indicator signal circuit to the IPC. When the washer fluid is low, the switch opens and ground is removed from the low washer fluid indicator signal circuit to the IPC. The IPC then displays the Low Washer Fluid Level message.
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Wiper/Washer System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for Scan Tool Information
Circuit/System Testing
Low Washer Fluid Indicator Inoperative
- Ignition OFF, disconnect the harness connector at the windshield washer fluid level switch.
- Ignition ON, verify that the DIC displays the Washer Fluid Level Low message.
- If all circuits test normal, replace the windshield washer fluid level switch.
| ⇒ | If the message is not displayed, test the signal circuit for a short to ground. If the circuit tests normal, replace the instrument panel cluster. |
Low Washer Fluid Indicator Always On
- Ignition OFF, disconnect the harness connector at the windshield washer fluid level switch.
- Ignition OFF, test for less than 1.0 ohm of resistance between the ground circuit terminal B and ground.
- Install a 3-amp fused jumper wire between the signal circuit terminal A and ground.
- Ignition ON, verify the Washer Fluid Level Low message is not displayed.
- If all circuits test normal, replace the windshield washer fluid level switch.
| ⇒ | If greater than 1.0 ohm, repair the ground circuit for an open/high resistance. |
| ⇒ | If the Washer Fluid Level Low message is displayed, test the signal circuit for an open high/resistance. If the circuit test normal, replace the IPC. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for IPC replacement, setup, and programming |
