B1858

B1858 - Driver Window Position Sensor Power Supply Low






For a complete wiring diagram, refer to.

• When Monitored: Whenever the module is awake.

• Set Condition: When the driver window hall sensor supply circuit falls below 0.8 volts for over 480ms.






Test Step 1 - Test for an Intermittent Condition

• Turn the ignition ON.

• With the scan tool, erase any DTCs.

• Operate the driver window up and down several times.

• Wait 30 seconds.

• With the scan tool, check for DTCs.

Does the scan tool display B1858 - Driver Window Position Sensor Supply Low?

Yes

• Go to Test Step 2

No

• The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.

• Perform the Body Verification Test. Refer to=> Non-DTC Based Diagnostics. Body Interior

Test Step 2 - Driver Window Motor Short






• With the scan tool, erase any DTCs.

• Turn the ignition OFF.

• Disconnect the driver window motor harness connector.

• Turn the ignition ON.

• Operate the driver window switch UP and DOWN several times.

• With the scan tool, check for DTCs.

Does the scan tool display B1858 - Driver Window Position Sensor Power Supply Low?

No

• Replace the driver window motor.

• Perform the Body Verification Test. Refer to=> Non-DTC Based Diagnostics. Body Interior

Yes

• Go to Test Step 3

Test Step 3 - Driver Window Hall Sensor Supply Circuit Short to Ground






• Turn the ignition OFF.

• Disconnect the driver door module C4 harness connector.

• Measure the resistance between ground and the driver window hall sensor supply circuit.

Is the resistance more than 10k ohms?

Yes

• Replace the door module.

• Perform the Body Verification Test. Refer to=> Non-DTC Based Diagnostics. Body Interior

No

• Repair the circuit for a short to ground.

• Perform the Body Verification Test. Refer to=> Non-DTC Based Diagnostics. Body Interior