1. Disconnect the negative battery cable..
2. Remove the front bumper..
3. Remove the horn..
4. Apply battery positive voltage to horn terminal A, and connect the horn retaining bolt to ground as shown in the figure, and then verify that the horn sounds.

If the horn does not sound, replace the horn.
Horn
Horn Removal/InstallationCoupling Component Removal/Installation
WARNING:
When replacing the coupling component, read the special character string
before installing a new coupling component and write it to the AWD control module
after replacement. The special character string is indicated in the two locations
shown in the figure.
1. D ...
Back Up Light Switch Removal/Installation [C66 M R]
1. Disconnect the negative battery cable..
2. Remove the front under cover No.2..
3. Remove in the order indicated in the table.
4. Install in the reverse order of removal.
1
Back-up light switch connector
2
Back-up light switch
...
Discharge Headlight Control Module
Purpose
Converts DC voltage from the battery to AC voltage and outputs the stabilized
voltage to the discharge headlight.
Function
The discharge headlight control module controls the voltage from the battery
to illuminate the discharge headlight.
The discharge headl ...