Low Washer Fluid Indicator Malfunction
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 Number | Circuit Description | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|---|
| 185 | Signal | 1 | 2 | — | — |
| 850 | Ground | — | 2 | — | — |
| 1. Low washer fluid message never displayed 2. Low washer fluid message always displayed |
Circuit/System Description The CHECK WASHER FLUID message is controlled by the Electronic Lighting Control Module using an input from the washer fluid level switch. The washer fluid level signal circuit is supplied voltage through a resistor then monitored within the Electronic Lighting Control Module. The washer fluid level switch is normally closed so the Electronic Lighting Control Module detects ignition voltage on the washer fluid level signal circuit whenever the washer fluid level is low. When the washer fluid reaches the point where the driver should be informed that the washer fluid is low, the washer fluid level switch opens. When the washer fluid level switch is opened, the washer fluid level signal circuit voltage is pulled high, and the instrument cluster displays the CHECK WASHER FLUID message on the driver information center. In order to prevent the CHECK WASHER FLUID message from being displayed while sloshing is occurring in the washer fluid container, the instrument cluster is programed with up to a 1 min delay before changing states of the CHECK WASHER FLUID message during an ignition cycle. Reference Information Schematic Reference Wiper/Washer Schematics Connector End View Reference Master Electrical Component List Description and Operation Wiper/Washer System Description and Operation Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References for Scan Tool Information Circuit/System Testing
- Ignition OFF and all vehicle systems OFF, disconnect the connector at the B118 Windshield Washer Solvent Container Level Sensor. It may take up to 2 min for all vehicle systems to power down.
- Verify a test lamp illuminates between the ground circuit terminal 2 and B+. ⇒ If test lamp does not illuminate Repair the open/high resistance on circuit 850 or ground connection ⇓ If test lamp illuminates
- Ignition ON.
- Verify a test lamp illuminates between control circuit terminal 1 and ground circuit terminal 2 ⇒ If test lamp does not illuminate 4.1. Test circuit 185 for a short to ground. ⇒ If a short to ground is found, repair the fault on the circuit. ⇓ If a short to ground is not found. 4.2. Test circuit 185 for an open/high resistance. ⇒ If an open/high resistance is found, repair the fault on the circuit. ⇓ If an open/high resistance is not found. 4.3. Replace the K219 Lighting Control Module. ⇓ If the test lamp illuminates
- Test or replace the B118B Windshield Washer Solvent Container Level Sensor. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair. Windshield Washer Solvent Container Level Sensor Replacement Control Module References for K219 Lighting Control Module replacement, programming and setup