Diesel Data: Automotive Repair

Headlight Relay Circuit

HEADLIGHT RELAY CIRCUIT

CIRCUIT DESCRIPTION
Headlight relay will be "ON" by operating the headlight switch. The transistor which activates relay has two sorts: one is activated directly by the headlight switch for fail-safe and the by CPU. The one activated by CPU has two systems and prevents the headlight to be turned of trouble with one system in the automatic operation circuit.

Wiring Diagram:




Wiring Diagram:






Step 1 - 2:




INSPECTION PROCEDURE