Fault Code 1030

Fault code 1030

Door lock, driver's (key-operated switch)

NOTE: This fault was detected by the 'driver's door' control unit

Diagnostic conditions
- Ignition on
- Battery voltage Ok (11.4 to 14.5 V)
- Internal function test on driver's door control unit
- Lock/unlock the vehicle using the mechanical key.

Possible causes of fault
- Short circuit to ground
- Door lock faulty

Affected pins
Driver's door control unit: Plug C
- Pin 1 'central locking, terminal 31
- Pin 8 'central locking, key-operated switch'

Diagnosis/troubleshooting

NOTE:
Visual inspection: In the next troubleshooting section, please check first that the affected pins on the driver's door control unit plug connection are neither damaged nor corroded. The wiring and plugs of the affected components must also be checked for external damage and proper contact Repair damaged or corroded pins it possible, otherwise replace affected pins. Repair or replace damaged wires.

NOTE:
Sporadic faults: In the event of faults that occur sporadically, the wiring positions that are linked to moving parts on and in the vehicle must be checked for each system. Various statuses that can cause faults must be simulated with the help of the wiring diagram.

NOTE:
Battery voltage: A battery voltage of between 11.4 and 14.5 V is required for the following troubleshooting procedure. This must be checked and provided, it necessary. On the vehicle electrical system, the voltage to the fuse (input side) must be guaranteed.

NOTE:
- Short circuit to ground --> The fault is detected if there is ground potential for more than five minutes on plug C, pin 8
- Implausible signal --> This fault is detected if the resistance between pins 1 and 8 on plug C is between 230 and 3,000 Ohms.