Pinpoint Test 1

PINPOINT TEST 1: THE DAYTIME RUNNING LAMPS ARE INOPERATIVE

NOTE: When an excessive circuit load occurs several times, the module shuts down the output until a service procedure is carried out. At the same time, the continuous DTC that was stored on the first failure cannot be cleared by a command to clear the continuous DTCs. The module does not allow this code to be cleared or the circuit restored to normal until a successful on-demand self-test proves that the fault has been repaired. After the on-demand self-test has successfully completed (no on-demand DTCs present), the continuous DTC clears and the circuit function returns.

Normal Operation
The DRL are controlled by the smart junction box (SJB). The SJB operates the low beam headlamps at a reduced intensity. The DRL driver (integral to the SJB) supplies pulse-width modulated (PWM) voltage to the low beam headlamps.

This pinpoint test is intended to diagnose the following:
- Headlamp bulbs
- SJB

Step 1-Step 3: