Pinpoint Tests

Daytime Running Lamps (DRL)

Pinpoint Tests

Pinpoint Test AC: The Daytime Running Lamps (DRL) Are Inoperative

Normal Operation

When the ignition switch is in the RUN position, the headlamps are not on (from the autolamp system or manual control from the headlamp switch), the transaxle is not in PARK (P) (automatic transaxle) or the parking brake is not applied (manual transaxle), the Smart Junction Box (SJB) provides a pulse-width modulated voltage to the low beam headlamps. This illuminates the headlamps at a reduced intensity.

This pinpoint test is intended to diagnose the following:

- Exterior lighting system input/output

- SJB (Smart Junction Box) configuration

- Ignition switch input

- Transaxle gear input (automatic transaxle)

- Parking brake switch input (manual transaxle)

- SJB (Smart Junction Box)

PINPOINT TEST AC : THE DRL (Daytime Running Lamps) ARE INOPERATIVE

AC1 VERIFY THE DRL (Daytime Running Lamps) OPERATION

- Ignition ON.

- Place the headlamp switch in the OFF position.

- If equipped with an automatic transaxle, place the gear selector lever in any gear other than PARK (P).

- If equipped with a manual transaxle, release the parking brake.

Do the DRL (Daytime Running Lamps) illuminate?

Yes
The system is operating correctly. INFORM the customer of the conditions required for the DRL (Daytime Running Lamps) to operate correctly.

No
GO to AC2.

AC2 CHECK FOR RECORDED SJB (Smart Junction Box) DTCs

- Review the recorded results from the SJB (Smart Junction Box) self-test.

Are any DTCs present?

Yes
REFER to Body Control Systems.

No
GO to AC3.

AC3 CHECK THE OPERATION OF THE HEADLAMPS

- Place the headlamp switch in each of its positions (including autolamps if equipped) and observe the headlamps.

Do the headlamps and autolamps (if equipped) operate correctly?

Yes
GO to AC4.

No
REFER to Headlamps or Autolamps Testing and Inspection.

AC4 CHECK THE IGNITION SWITCH INPUT

- Place the headlamp switch in the OFF position.

- Enter the following diagnostic mode on the scan tool: DataLogger.

- Monitor the SJB (Smart Junction Box) ignition switch PIDs (IGN_A_ECU, IGN_O_ECU, IGN_R_ECU) while cycling the ignition switch through all positions (states).

Do the PIDs agree with the ignition switch positions?

Yes
For vehicles with an automatic transaxle, GO to AC5.

For vehicles with a manual transaxle, GO to AC6.

No
REFER to Steering Column.

AC5 CHECK THE TRANSAXLE GEAR INPUT

- Ignition ON.

- Enter the following diagnostic mode on the scan tool: PCM DataLogger.

- Monitor the PCM transaxle gear status PID (TR) while placing the gear selector lever through all its positions.

Does the PID agree with the gear selection?

Yes
GO to AC7.

No
REFER to Automatic Transmission/Transaxle &/or Transmission Control Systems.

AC6 CHECK THE BRAKE WARNING INDICATOR OPERATION

- Ignition ON.

- Apply and release the parking brake while observing the brake warning indicator.

Does the brake warning indicator operate correctly?

Yes
GO to AC7.

No
REFER to Instrument Panel, Gauges and Warning Indicators.

AC7 CHECK THE SJB (Smart Junction Box) FOR DRL (Daytime Running Lamps) CONFIGURATION

- Enter the following diagnostic mode on the scan tool: SJB (Smart Junction Box) Module Programming.

- Check the SJB (Smart Junction Box) configuration and make sure the DRL (Daytime Running Lamps) feature is enabled.

Is the SJB (Smart Junction Box) DRL (Daytime Running Lamps) configuration enabled?

Yes
INSTALL a new SJB (Smart Junction Box). TEST the system for normal operation.

No
ENABLE the DRL (Daytime Running Lamps) configuration. TEST the system for normal operation.