RAM 1500 Truck 2WD V8-5.9L VIN Z LDC (1999)
Washer Fluid Level Indicator: Testing and Inspection
HARD WIRED LAMP DIAGNOSIS
Each of the lamps depends upon a hard wired circuit input to the instrument cluster for proper operation. The following procedures will help to
diagnose conditions that may cause an inoperative hard wired lamp circuit condition.
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, REFER TO AIR BAGS AND SEAT BELTS/AIR BAGS BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND
POSSIBLE PERSONAL INJURY.
Low Washer Fluid Warning Lamp
The diagnosis found here addresses an inoperative low washer fluid warning lamp condition. If the problem being diagnosed is related to lamp
accuracy, be certain to confirm that the problem is with the lamp or washer fluid level sensor and not with a damaged or empty washer fluid reservoir.
Inspect the reservoir for proper fluid level and signs of damage or distortion that could affect sensor performance before you proceed with lamp
diagnosis. Refer to Washer System in the Diagnosis and Testing of Wiper and Washer Systems for more information.
1. Check the fused ignition switch output (run/ start) fuse in the junction block. If OK, go to Step 2.If not OK, repair the shorted circuit or component
as required and replace the faulty fuse.
2. Turn the ignition switch to the On position Check for battery voltage at the fused ignition switch output (run/start) fuse in the junction block. If
OK, go to Step 3. If not OK, repair the open fused ignition switch output (run/start) circuit to the ignition switch as required.
3. Turn the ignition switch to the Off position. Disconnect the washer fluid level sensor wire harness connector. Install a jumper wire between the two
cavities of the washer fluid level sensor wire harness connector. Turn the ignition switch to the On position. The low washer fluid warning lamp
should light. Remove the jumper wire and the lamp should go off. If OK, replace the faulty washer fluid level sensor. If not OK, go to Step 4.
4. Turn the ignition switch to the Off position. Check for continuity between the ground circuit cavity of the washer fluid level sensor wire harness
connector and a good ground. There should be continuity. If OK, go to Step 5. If not OK, repair the open ground circuit to ground as required.
5. Disconnect and isolate the battery negative cable. Remove the instrument cluster. The washer fluid level sensor wire harness connector is still
disconnected. Check for continuity between the low washer fluid level sense circuit cavity of the instrument cluster wire harness connector B and a
good ground. There should be no continuity. If OK, go to Step 6. If not OK, repair the shorted low washer fluid level sense circuit as required.
6. Check for continuity between the low washer fluid level sense circuit cavities of the instrument cluster wire harness connector B and the washer
fluid level sensor wire harness connector. There should be continuity. If OK, replace the faulty bulb. If not OK, repair the open low washer fluid
level sense circuit as required.
