Diagnostic Trouble Code (DTC) Information KVM-0021

Condition 

Fig 1: Identifying Outer Handle & Bracket With Switch

Courtesy of VOLVO CARS CORPORATION

When one of the handles on the side doors is pulled out, the two switches should close in order:

1. The switch indicating that the handle has been pulled out
2. The switch in the quick lock which enables the keyless vehicle module (KVM) to activate the motor in the quick lock.

The diagnostic trouble code (DTC) is stored, and the control module assumes that there is a fault in the switch in the handle, if the keyless vehicle module (KVM) detects that the switch in the quick lock in the right-hand front door closes, without the switch for the handle of the right-hand front door being closed.

Substitute Value 

• The keyless vehicle module (KVM) transmits a signal to the central electronic module (CEM) that unlocking central locking must occur.

Possible Source 

• Switch for right front door handle faulty
• Open-circuit in the cables to the switch for the right front door handle
• Short-circuit to ground in the signal cable.

Fault symptom[s] 

• Delayed unlocking of the door.