Chrysler Concorde 2004 Service Manual page 239

HEADLAMP SWITCH INPUT FAILURE —
TEST
4 Turn the ignition off.
Disconnect the Headlamp Switch connector.
Disconnect the Body Control Module C2 connector.
Turn the ignition on.
Measure the voltage between the Headlamp Switch Mux circuit and ground.
Is there any voltage in the Headlamp Switch MUX circuit?
Yes → Repair the Headlamp Switch MUX circuit for a short to ground.
→ Replace the Body Control Module.
No
5 Turn the ignition off.
Disconnect the Headlamp Switch connector.
Disconnect the Body Control Module C2 connector.
Measure the Headlamp Switch Mux circuit from the Body Control Module C2
connector to the headlamp switch connector.
Is the resistance below 5.0 ohms?
Yes → Go To 6
→ Repair the open Headlamp Switch MUX circuit.
No
6 Disconnect the Headlamp Switch connector.
Ensure the Body Control Module C2 connector is connected.
Connect a jumper wire between the Headlamp Switch Mux circuit and the Headlamp
Switch Return circuit in the Headlamp Switch connector.
With the DRBIII read the Headlamp Switch Voltage
Does the DRBIII display Headlamp Switch Volts: 0.0 volts?
Yes → Replace the Headlamp Switch.
→ Go To 7
No
7 Disconnect the Headlamp Switch connector.
With the DRBIII read the Headlamp Switch voltage.
Does the DRBIII display voltage between 4.8 and 5.2 volts?
Yes → Replace the Headlamp Switch.
→ Go To 8
No
8 Turn the ignition off.
Disconnect the Headlamp Switch connector.
Disconnect the Body Control Module C2 connector.
Measure the Headlamp Switch Mux circuit from the headlamp switch connector to
ground.
Is the resistance below 1000.0 ohms?
Yes → Repair the Headlamp Switch MUX circuit for a short to ground.
→ Replace the Body Control Module.
No
ACTION
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
EXTERIOR LIGHTING
Continued
223
APPLICABILITY
All
All
All
All
All