Dodge ZB 2005 Service Manual page 1643

IGNITION, POWER, ACCESSORY
HORN RELAY COIL OPEN/SHORT TO GROUND —
TEST
3 Turn the ignition off.
Remove the Horn Relay from the Power Distribution Center.
Substitute the original Horn Relay with a known good relay.
Turn the ignition on.
With the DRBIII , erase the current Body Control Module DTCs.
Turn the engine off, wait 10 seconds then turn the ignition on.
Attempt to operate the horn.
With the DRBIII , read the current Body Control Module DTC's.
Does the DRBIII display: HORN RELAY COIL OPEN/SHORT TO GROUND?
Yes → Go To 4
→ Replace the original Horn Relay.
No
4 Turn the ignition off.
Remove the Horn Relay from the Power Distribution Center.
Disconnect the Body Control Module C2 connector.
Measure the resistance of the Horn Relay Control circuit at the Horn Relay connector
to ground.
Is the resistance below 5.0 ohms?
Yes → Repair the Horn Relay Control circuit for a short to ground.
→ Go To 5
No
5 Turn the ignition off.
Remove the Horn Relay from the Power Distribution Center.
Disconnect the Body Control Module C2 connector.
Measure the resistance of the Horn Relay Control circuit between the BCM connector
and the Horn Relay connector.
Is the resistance below 5.0 ohms?
Yes → Replace the Body Control Module.
→ Repair the Horn Relay Control circuit for an open.
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.
262
Continued
APPLICABILITY
All
All
All