Checking power supply

Check the power supply to the driver door/passenger door module (DDM/PDM) by:

• Measuring the voltage between #B12 (#26) and #B5 (#19) on control module connector B.
• Measuring battery voltage.

If the difference between the control module supply voltage and battery voltage is greater than 2 V, the fault is in the supply cable or is due to contact resistance.

Also check the fuse of the driver door/passenger door module (DDM/PDM). A half-blown fuse can cause intermittent faults.

If the difference is less than 2 V, there could be an internal fault in the door control module.

Remedy as necessary.

Other information: 

• See Signal specification
• See Driver's door module / passenger door module (DDM/PDM), replacing
• See Checking wiring and terminals

Refer to Verification mixed