The daytime running lamps (DRL) system consists of a DRL module that is located behind the front bumper. The module is mounted to the radiator support.
Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.
Scheme 1
The daytime running lamps (DRL) system operates the low beam headlamps at a reduced intensity. The DRL module (15A270) supplies pulse width modulated (PWM) voltage, approximately 75-92% of battery voltage, to the low beam headlamps when the following conditions are met
- The high beam headlamps are disabled.
- The ignition switch (11572) is in the RUN position.
The DRL module remains enabled when the low beam headlamps are turned on
Inspection and Verification
- Verify the customer concern by operating the system.
- Visually inspect for obvious signs of mechanical and electrical damage. Visual Inspection Chart VISUAL INSPECTION CHART Electrical Daytime running lamps (DRL) module Central junction box (CJB) fuse(s): 27 (15A) 33 (15A) Battery junction box (BJB) fuse(s): 33 (15A) Sport 38 (10A) 42 (10A) 31 (15A) Damaged wiring harness Loose or corroded connection
- Verify the headlamps are operating correctly. Correct any concerns before proceeding to the next step. For additional information, refer to EXTERIOR LIGHTING .
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the concern is not visually evident, verify the symptom and refer to the «SYMPTOM CHART»(/ford/explorer-sport-trac/i-2000-2005/remont/headlights/#daytime-running-lamps__symptom-chart) .
Symptom Chart
| Condition | Possible Sources | Action |
|---|---|---|
| The daytime running lamps are inoperative | Central junction box (CJB) fuse(s): 27 (15A). 33 (15A). Battery junction box (BJB) fuse(s): 33 (15A) Sport. 38 (10A). 42 (10A). 1 (15A) Sport Trac. Circuitry. Daytime running lamps (DRL) module. | Go To PINPOINT TEST A: THE DAYTIME RUNNING LAMPS ARE INOPERATIVE . |
| The daytime running lamps are on with the ignition switch OFF | Circuitry. Ignition switch. Daytime running lamps (DRL) module. | Go To PINPOINT TEST B: THE DAYTIME RUNNING LAMPS ARE ON WITH THE IGNITION SWITCH OFF . |
| The Daytime running lamps are inoperative-the low beam headlamps are on at full intensity in DRL mode | Circuitry. Headlamp switch. DRL module. | Go To PINPOINT TEST C: THE DAYTIME RUNNING LAMPS ARE INOPERATIVE-THE LOW BEAM HEADLAMPS ARE ON AT FULL INTENSITY IN DRL MODE |
| The daytime running lamps are inoperative-the low beam headlamps are on at reduced intensity with the headlamp switch on | Circuitry. Headlamp switch. | REFER to EXTERIOR LIGHTING . |
PROBLEM SYMPTOM CHART
Scheme 2
Scheme 3
Scheme 4
Scheme 5
Scheme 6
- Disconnect the battery ground cable. .
- Remove the daytime running lamps (DRL) control module. Disconnect the electrical connector. Remove the bolts. Remove the module.
- To install, reverse the removal procedure.