Use the scan tool data display values and definitions information in order to
assist in diagnosing vehicle malfunctions. Compare the vehicles actual scan tool
data display with the typical data value in the table. Use the data in order to
aid in understanding the nature of the concern when the vehicle data display does
not match the typical data values. Refer to
Scan Tool Data List
.
The typical scan tool data values were taken from a known good vehicle under
the following conditions:
• | The ignition switch is in the ON position. |
• | The windshield wiper/washer switch is OFF. |
Low Washer Fluid: This input displays the washer fluid level.
Low is displayed when the level is Low and OK is displayed if it is above the switch
threshold.
Wiper High Speed Switch: This input displays On if the wiper
washer switch is in the Hi position.
Wiper Motor Low/Hi Speed Relay: This output displays the state
of the wiper Hi relay. On is wipers Hi speed and Off is wipers Low speed.
Wiper Motor Park Switch: The BCM uses this input to determine
if the wipers are approaching the park position. The scan tool displays Active when
the BCM detects ground on the windshield wiper motor park switch signal circuit.
Wiper Motor Relay: This output displays whether or not the BCM
is providing voltage for the wiper relay. ON is displayed when the BCM detects the
correct signal from the windshield wiper switch.
Wiper Washer Motor: This output displays the operation mode
of the washer pump.
Wiper Washer Switch: The BCM uses this input to determine if
the wash switch is depressed. If it is depressed, the BCM commands the wiper 1 relay
ON and keeps it ON until 2 wipe cycles have completed after the switch has been released.