Ford Fiesta Quiz
Lighting

Daytime Running Lamps (DRL). Diagnosis and Testing

In this manual: Lighting
Service Information — 27Suspension — 48Transmission — 9Brake System — 52Steering — 21Engine — 140Manual Transmission, Clutch, Transfer Case and Power Transfer Unit — 48Exhaust System — 6Fuel System — 21Climate Control System — 58Instrumentation and Warning Systems — 26Battery and Charging System — 20Infotainment Systems — 41Lighting — 29Power Distribution — 11Electronic Function Group — 30Body and Paint — 275Frame and Mounting — 3
~2min read

Symptom Chart

The diagnosis in this manual assumes a certain level of skill and knowledge of Ford-approved diagnostic procedures.
REFER TO: Diagnostic Methods (100-00 General Information, Description and Operation).

Symptom Chart: DRL

Symptom Chart


Condition Possible Sources Action
Module Does Not Respond to Diagnostic Scan Tool
  • Fuse
  • Wiring, Terminals or Connectors
  • Module
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
DRL do not operate Refer to Pinpoint Test GO to Pinpoint Test A

Pinpoint Tests

DRL do not operate

Normal Operation and Fault Symptoms


REFER to: Exterior Lighting - System Operation and Component Description (417-01 Exterior Lighting, Description and Operation).

Possible Sources

  • Wiring, Terminals or Connectors
  • Ignition Lock
  • BCM

Visual Inspection and Preliminary Diagnosis

  • Inspect the multifunction switch for damage.

DIAGNOSTIC TEST A: DRL (DAYTIME RUNNING LAMPS) DO NOT OPERATE
A1 CHECK HEADLAMP OPERATION
  • Ignition OFF.
  • Turn the headlamp switch to the headlamps on position.

Do the headlamps operate normally?
Yes GO to A2
No CHECK the low beam headlamps.
REFER TO: Headlamps (417-01 Exterior Lighting, Diagnosis and Testing).
A2 CHECK THE IGNITION SWITCH PID (PARAMETER IDENTIFICATION)
  • The ignition is on.
  • Using the diagnostic scan tool, view the BCM parameter identification (PID) data.
  • Monitor the BCM IGN_SW_RUN PID while cycling the ignition on and off.

Does the IGN switch PID value match the ignition state?
Yes GO to A3
No
REFER TO: Steering Wheel and Column Electrical Components (211-05 Steering Wheel and Column Electrical Components, Diagnosis and Testing).
A3 CHECK THE BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the BCM connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable technical service bulletins (TSBs). If a TSB exists for this concern, STOP this test and FOLLOW the TSB instructions. If no TSBs apply to this concern, INSTALL a new BCM.
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

Test yourself

A quick Ford Fiesta quiz: every answer comes with an explanation and a link to the manual page.