B1858

B1858-DRIVER WINDOW POSITION SENSOR POWER SUPPLY LOW - DDM

B1858-Driver Window Position Sensor Power Supply Low - DDM:

WHEN MONITORED
Whenever the module is awake.

SET CONDITION
When the Driver Window Hall Sensor Supply circuit falls below 2.0 volts of battery voltage for over 200 ms., this code will set.

POSSIBLE CAUSES
- (Q305) driver window hall sensor supply circuit short to ground
- (Q305) driver window hall sensor supply circuit open
- Window motor open or shorted
- Driver door module (DDM)

DIAGNOSTIC TEST

1. TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
With the scan tool, record and erase DTC's
Operate the Driver Window up and down several times.
Wait 30 seconds.
With the scan tool, read DTC's.

Q: Does the scan tool display B1858-DRIVER WINDOW POSITION SENSOR POWER SUPPLY LOW?

YES: Go To 2
NO: The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

2. WINDOW MOTOR OPEN OR SHORTED




Disconnect the Driver Express Window Motor connector.
Turn the ignition on.
Measure the voltage between ground and the (Q305) Driver Window Hall Sensor Supply circuit.

Q: Is the voltage above 10.5 volts?

YES: Replace the Window Motor.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 3

3. (Q305) DRIVER WINDOW HALL SENSOR SUPPLY CIRCUIT SHORT TO GROUND




Turn the ignition off.
Disconnect the Driver Door Module C2 connector.
Measure the resistance between Ground and the (Q305) Driver Window Hall Sensor Supply circuit.

Q: Is the resistance below 1000.0 ohms?

YES: Repair the (Q305) Driver Window Hall Sensor Supply circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 4

4. (Q305) DRIVER WINDOW HALL SENSOR SUPPLY CIRCUIT OPEN




Measure the resistance of the (Q305) Driver Window Hall Sensor Supply circuit between the Driver Door Module C2 connector and the Driver Window Motor connector.

Q: Is the resistance below 5.0 ohms?

NO: Repair the (Q305) Driver Window Hall Sensor Supply circuit for an open.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
YES: Replace the Driver Door Module.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test