MKS AWD V6-3.7L (2009)
Daytime Running Lamp: Pinpoint Tests
Daytime Running Lamps (DRL)
Pinpoint Tests
Pinpoint Test AF: The Daytime Running Lamps (DRL) Are Inoperative
Normal Operation
The fog lamps are utilized as the Daytime Running Lamps (DRL). 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), the Smart Junction Box (SJB) energizes the fog lamp
relay. This illuminates the fog lamps at full intensity.
This pinpoint test is intended to diagnose the following:
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Exterior lighting system input/output
-
SJB configuration
-
Ignition switch input
-
Transaxle gear input
-
SJB
PINPOINT TEST AF: THE DRL ARE INOPERATIVE
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AF1 VERIFY THE DRL OPERATION
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Place the gear selector lever in any gear other than PARK (P).
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Are the DRL illuminated?
Yes
The system is operating correctly. INFORM the customer of the conditions required for the DRL to operate correctly.
No
GO to AF2.
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AF2 CHECK THE OPERATION OF THE FOG LAMPS
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Place the headlamp switch in the PARKING LAMPS ON position and engage the fog lamp switch.
-
Do the fog lamps operate correctly?
Yes
GO to AF3.
No
REFER to Fog Lamps See: Fog/Driving Lamp/Testing and Inspection.
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AF3 CHECK THE IGNITION SWITCH INPUT
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Place the headlamp switch in the OFF position.
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Enter the following diagnostic mode on the scan tool: SJB DataLogger.
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Monitor the SJB ignition switch ACC (IGN_A_ECU), ignition switch OFF (IGN_O_ECU) and ignition switch RUN (IGN_R_ECU) PIDs while
cycling the ignition switch through all positions (states).
-
Do the PIDs agree with the ignition switch positions (states)?
Yes
GO to AF4.
