System Diagram
System Description
The headlamp system for Canada vehicles is equipped with a daytime light relay that activates the high beam headlamps at approximately half illumination whenever the engine is running. If the parking brake is depressed before the engine is started, the daytime lights will not be illuminated. The daytime lights will illuminate once the parking brake is released. Thereafter, the daytime lights will continue to operate when the parking brake is depressed.
Component Parts Location
Component Description
After starting the engine with the parking brake released and the lighting switch in the OFF or 1ST position, the headlamp high beam automatically turns on. With the lighting switch in the 2nd position or with autolamps ON, the headlamps function the same as conventional light systems.
OPERATION
The BCM monitors inputs from the parking brake switch and the combination switch (lighting and turn signal switch) to determine when to activate the daytime light system. The BCM sends a daytime light request to the IPDM E/R via the CAN communication lines. The IPDM E/R grounds the daytime light relay which in turn, provides power to the ground side of the RH high beam lamp. Power flows backward through the RH high beam lamp to the IPDM E/R, through the high beam fuses, through the LH high beam lamp circuit to the LH high beam lamp and on to ground. The high beam lamps are wired in series which causes them to illuminate at a reduced intensity.
When starting the engine with the parking brake depressed, the daytime lights will not operate.
Insufficient heating
Component Function Check
Symptom
Insufficient heating
No warm air comes out. (Airflow volume is normal.)
INSPECTION FLOW
1. CONFIRM SYMPTOM BY PERFORMING OPERATION CHECK - TEMPERATURE INCREASE
Press the AUTO switch.
Turn temperature control dial (driver side) clockwise until 32C
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Front wiper auto stop signal circuit
Component Function Check
1. CHECK FRONT WIPER (AUTO STOP) OPERATION
CONSULT DATA MONITOR
Select "WIP AUTO STOP" of IPDM E/R DATA MONITOR item.
Operate the front wiper.
With the front wiper operation, check the monitor status.
Diagnosis Procedure
1. CHECK IPDM E/R OUTPUT VOLTAGE
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FEB system operation
1. Vehicle ahead detection indicator
2. FEB warning indicator
3. FEB system warning light
The FEB system will function when your vehicle is
driven at speeds above approximately 3 mph
(5 km/h).
If a risk of a forward collision is detected, the FEB
system will provide an initial warning t ...