Tests AD: The Trailer Battery Charging Is Inoperative/Does Not Operate Correctly

PINPOINT TEST AD: THE TRAILER BATTERY CHARGING IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

Normal Operation
The trailer battery charging is accomplished through the use of the trailer tow battery charge relay. The trailer tow battery charge relay is supplied voltage and ground through the central junction box (CJB). The trailer tow battery charge relay is energized when the ignitions switch is in the RUN position. When energized, the trailer tow battery charge relay routes voltage from the CJB fuse 106 (30A) to the trailer tow connector through circuit 49 (OG).

This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Trailer tow connector
- Trailer tow battery charge relay
- CJB
- Trailer

AD1-AD2:

AD2-AD4:

AD4-AD6:

AD6-AD8:

AD8-AD9: