Horn System - Electrical Diagnostics: Other Dodge Dakota III

Monitor Conditions

1. When Monitored: Continuously

Set Conditions

1. Set Condition: When the Front Control Module detects a short to battery on the Horn Relay Control circuit.

Possible Causes

Scheme 3

1. 1) TEST FOR INTERMITTENT CONDITION With the scan tool, record and erase DTC's Operate the Horn Switch several times. Cycle the ignition from on to off 3 times and leave on. With the scan tool, read DTC's. Does the scan tool display B2337 - HORN CONTROL CIRCUIT HIGH? Yes Go To step 2) . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-247667-S33016860872007020100000) .
2. 2) HORN RELAY Turn the ignition off. Install a known good relay in place of the Horn Relay. With the scan tool erase DTC's Operate the Horn Switch several times. Cycle the ignition from on to off 3 times and leave on. With the scan tool, read DTC's. Does the scan tool display B2337 - HORN CONTROL CIRCUIT HIGH? No Replace the original Horn Relay. Perform «BODY VERIFICATION TEST - VER 1»(ref-247667-S33016860872007020100000) . Yes Go To step 3) .
3. 3) SHORTED POWER DISTRIBUTION CENTER Remove the Horn Relay. Disconnect the Front Control Module from the IPM 49 - way connector. Turn the ignition on. Measure the voltage between (X4) Horn Relay Control circuit and ground. Is there any voltage present? Yes Replace the Power Distribution Center. See «MODULE-FRONT CONTROL»(ref-247618-S23650772252007020100000) . Perform «BODY VERIFICATION TEST - VER 1»(ref-247667-S33016860872007020100000) . No Replace the Front Control Module. See «MODULE-FRONT CONTROL»(ref-247618-S23650772252007020100000) . Perform «BODY VERIFICATION TEST - VER 1»(ref-247667-S33016860872007020100000) .

1. When Monitored: Continuously

1. Set Condition: When the Front Control Module does not detect voltage on the Horn Relay Control circuit.

Scheme 4

Scheme 5

Scheme 6

Scheme 7

1. 1) TEST FOR INTERMITTENT CONDITION With the scan tool, record and erase DTC's Operate the Horn Switch several times. Cycle the ignition from on to off 3 times and leave on. With the scan tool, read DTC's. Does the scan tool display the same DTC? Yes Go To step 2) . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-247667-S33016860872007020100000) .
2. 2) HORN FUSE Using a 12-volt test light connected to ground, check for voltage on both sides of the Horn fuse. Does the test light illuminate and was the fuse OK? No Replace the horn fuse if open and check for a short to ground on the Horn Relay Output circuit or correct the open B(+) circuit to the fuse. Perform «BODY VERIFICATION TEST - VER 1»(ref-247667-S33016860872007020100000) . Yes Go To step 3) .
3. 3) OPEN FUSED B(+) TO RELAY Remove the Horn Relay from the PDC. Using a 12-volt test light connected to ground, check the Fused B(+) circuit at the relay connector. Does the test light illuminate? No Replace the Power Distribution Center. See «MODULE-FRONT CONTROL»(ref-247618-S23650772252007020100000) . Perform «BODY VERIFICATION TEST - VER 1»(ref-247667-S33016860872007020100000) . Yes Go To step 4) .
4. 4) HORN RELAY Install a known good relay in place of the Horn Relay. With the scan tool erase DTC's Operate the Horn Switch several times. Cycle the ignition from on to off 3 times and leave on. With the scan tool, read DTC's. Does the scan tool display the same DTC? No Replace the original Horn Relay. Perform «BODY VERIFICATION TEST - VER 1»(ref-247667-S33016860872007020100000) . Yes Go To step 5) .
5. 5) (X4) HORN RELAY CONTROL SHORTED Remove the Horn Relay. Disconnect the Front Control Module from the PDC 49 - way connector. Measure the resistance between ground and the (X4) Horn Relay Control circuit at the relay. Is the resistance below 1000.0 ohms? Yes Replace the Power Distribution Center. See «MODULE-FRONT CONTROL»(ref-247618-S23650772252007020100000) . Perform «BODY VERIFICATION TEST - VER 1»(ref-247667-S33016860872007020100000) . No Go To step 6) .
6. 6) (X4)HORN RELAY CONTROL OPEN Measure the resistance of the (X4)Horn Relay Control circuit from the relay connector to FCM connector. Is the resistance below 3.0 ohms? Yes Replace the Front Control Module. See «MODULE-FRONT CONTROL»(ref-247618-S23650772252007020100000) . Perform «BODY VERIFICATION TEST - VER 1»(ref-247667-S33016860872007020100000) . No Replace the Power Distribution Center. See «MODULE-FRONT CONTROL»(ref-247618-S23650772252007020100000) . Perform «BODY VERIFICATION TEST - VER 1»(ref-247667-S33016860872007020100000) .

Scheme 8

For the Horn System circuit diagram, see SCHEMATICS AND DIAGRAMS .

1. When Monitored: Continuously

1. Set Condition: When the Cluster senses the Horn Switch input for over 30 seconds, this code will set.

Scheme 9

1. 1) TEST FOR INTERMITTENT CONDITION With the scan tool, record and erase DTC's Operate the Horn Switch several times. Cycle the ignition from on to off 3 times. Turn the ignition on. With the scan tool, read DTC's. Does the scan tool display HORN SWITCH STUCK? Yes Go To step 2) . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-247667-S33016860872007020100000) .
2. 2) (X3)HORN SWITCH SENSE SHORTED Turn the ignition off. Disconnect the Cluster C1connector. Measure the resistance between ground and the (X3) Horn Switch Sense circuit. Is the resistance below 1000.0 ohms? No Replace the Cluster. Perform «BODY VERIFICATION TEST - VER 1»(ref-247667-S33016860872007020100000) . Yes Go To step 3) .
3. 3) HORN SWITCH SHORTED WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding. Disconnect the Horn switch connector. Measure the resistance between ground and the (X3) Horn Switch Sense circuit. Is the resistance below 1000.0 ohms? Yes Go To step 4) . Perform «BODY VERIFICATION TEST - VER 1»(ref-247667-S33016860872007020100000) . No Replace the Horn Switch. Perform «BODY VERIFICATION TEST - VER 1»(ref-247667-S33016860872007020100000) .
4. 4) CLOCKSPRING SHORTED Disconnect the Clockspring C1connector. Measure the resistance between ground and the (X3) Horn Switch Sense circuit. Is the resistance below 1000.0 ohms? Yes Repair the Horn Switch Sense circuit for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-247667-S33016860872007020100000) . No Replace the Clockspring. Perform «BODY VERIFICATION TEST - VER 1»(ref-247667-S33016860872007020100000) .