Chrysler 300M 2002 Service Manual page 1944

*AUTO HEADLAMPS AND OR FOG LAMPS NOT OPERATING PROP -
ERLY —
Continued
TEST
3 With the DRBIII read the AUTO HEADLAMP SENSE VOLTS under sensors while
shinning a shop light on the Sun Sensor and then remove the light and cover up the
sensor.
The Auto Headlamp Sense voltage should change from approximately 0.0 to 5.0 volts,
Choose outcome.
A. Voltage in range
B. Stays above 4.8 volts
C. Stays below 0.5 volts
4 If there are no possible causes remaining, view repair.
Repair
5 Disconnect the Sun Sensor VTSS LED 4-way connector.
Connect a jumper wire between the Sun Sensor Signal and the Sensor Ground
circuits in the sensor connector.
With the DRBIII in sensors read Auto Headlamp sensor volts.
Does the DRBIII show Auto head sensor volts under .5 volts?
Yes → Replace the Sun Sensor VTSS LED.
No
6 Disconnect the Sun Sensor VTSS LED connector.
Disconnect the BCM C2 connector.
Measure the resistance of the Sun Sensor Signal circuit between the Sun Sensor
VTSS LED connector and the BCM C2 connector.
Is the resistance below 5.0 ohms?
Yes → Go To 7
No
7 Disconnect the Sun Sensor VTSS LED connector.
Disconnect the BCM C2 connector.
Measure the voltage of the Sun Sensor Signal circuit.
Is there ANY voltage on the Sun Sensor Signal circuit?
Yes → Repair the Sun Sensor Signal wire for a short to voltage
No
ACTION
Go To 4
Go To 5
Go To 10
Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
→ Go To 6
→ Repair the open Sun Sensor Signal wire
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
→ Go To 8
EXTERIOR LIGHTING
221
APPLICABILITY
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