B1858–DRIVER WINDOW POSITION SENSOR POWER SUPPLY LOW – DDM

For a complete wiring diagram Refer to Section 8W.

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 200ms., 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)

1.TEST FOR INTERMITTENT CONDITION

Does the scan tool display B1858–DRIVER WINDOW POSITION SENSOR POWER SUPPLY LOW?

Yes

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. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

2. WINDOW MOTOR OPEN OR SHORTED

Is the voltage above 10.5.volts?

Yes

Replace the Window Motor in accordance with service information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

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

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. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

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

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. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

Yes

Replace the Driver Door Module in accordance with service information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)