Horn System - Electrical Diagnostics: Other Dodge Charger V

Monitor Conditions

1. When Monitored: Continuously with the ignition on.

Set Conditions

1. Set Condition: The Steering Column Control Module senses that the Horn Switch is in the Set position for greater than 50 seconds.

Possible Causes

Scheme 2

Scheme 3

1. DTC IS ACTIVE NOTE: If P0562-BATTERY VOLTAGE LOW or P0563-BATTERY VOLTAGE HIGH is set along with this DTC, diagnose the battery voltage DTC first. Ignition on, engine not running. With the Scan Tool, select View DTCs in the Steering Column Control Module. Is the DTC status Active at this time? Yes Go to step 2 . No Go to step 7 .
2. (X3) HORN SWITCH SIGNAL CIRCUIT SHORT TO (X903) HORN SWITCH RETURN CIRCUIT Turn the ignition off. Remove the Driver Airbag in accordance with the Service information. Disconnect the Horn Switch harness connector. Disconnect the Right Steering Switch harness connector. NOTE: Before proceeding, thoroughly inspect the wiring harness and connectors between the Horn Switch and the Right Steering Switch for a short to ground or any other circuit. Measure the resistance between the (X3) Horn Switch circuit and the (X903) Horn Switch Return circuit. Is the resistance below 5.0 ohms? Yes Repair the (X3) Horn Switch circuit for a short to the (X903) Horn Switch Return circuit. Perform the «BODY VERIFICATION TEST - VER 1»(ref-255944-S11703373722007060500000) . No Go to step 3 .
3. (X3) HORN SWITCH SIGNAL CIRCUIT SHORT TO GROUND NOTE: Before proceeding, thoroughly inspect the wiring harness and connectors between the Horn Switch and the Right Steering Switch for a short to ground or to any other circuit. Measure the resistance between the (X3) Horn Switch circuit at the harness connector to the Right Switch and ground (include the metal casing at the back side of the Airbag). Is the resistance below 5.0 ohms? Yes Repair the (X3) Horn Switch circuit for a short to ground. No Go to step 4 .
4. HORN SWITCH Measure the resistance between the (X3) Horn Switch circuit and the (X903) Horn Switch Return circuit at the harness connector to the horn switch. Is the resistance below 5.0 ohms? Yes Replace the Horn Switch in accordance with the Service Information. No Go to step 5 .
5. RIGHT STEERING SWITCH Turn the ignition off. Replace the Right Steering Switch in accordance with the Service Information. Turn the ignition on. NOTE: The C206 (LIN bus) connector must be connected for this test. Press and release the Horn Switch several times. With the Scan Tool, Clear Stored DTCs in the Steering Column Control Module. With the Scan Tool, select Data Display and view the Horn switch data. While monitoring the Horn switch data, press and release the Horn Switch several times. Does the Horn switch data change from Set to Not Set when the switch is pressed and released? Yes Test Complete. No Go to step 6) .
6. 6) STEERING COLUMN CONTROL MODULE (SCCM) View repair. Repair Replace the Steering Column Control Module (SCCM) in accordance with the Service Information.
7. INTERMITTENT HORN SWITCH INPUT CIRCUIT/PERFORMANCE DTC The conditions necessary to set this DTC are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors. Look for the data to change or for the DTC to reset during the wiggle test. Were any problems found? Yes Repair as necessary. No Test complete.

Scheme 4

1. When Monitored: Continuously

1. Set Condition: When the Front Control Module detects a shorted low condition on the Horn Relay Control circuit this DTC will set.

Scheme 5

Scheme 6

Scheme 7

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 B2336 - HORN CONTROL CIRCUIT LOW? Yes Go To 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. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) .
2. HORN FUSE Using a 12-volt test light connected to ground, check 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. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . Yes Go To 3 .
3. 3) OPEN (A905) 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. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . Yes Go To 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 B2336 - HORN CONTROL CIRCUIT LOW? No Replace the original Horn Relay. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . Yes Go To 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. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) No Replace the Front Control Module. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) .

1. When Monitored: Continuously

1. Set Condition: When the Front Control Module detects excessive current on the Horn Relay Control circuit.

Scheme 8

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 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. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000)
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. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . Yes Go To 3 .
3. SHORTED POWER DISTRIBUTION CENTER Remove the Horn Relay. Disconnect the Front Control Module from the PDC 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. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . No Replace the Front Control Module. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) .

Scheme 9

1. When Monitored: Continuously

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

Scheme 10

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 B2338 - HORN CONTROL CIRCUIT OPEN? Yes Go To 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. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) .
2. HORN FUSE Using a 12-volt test light connected to ground, check 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. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . Yes Go To 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. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . Yes Go To 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 B2338 - HORN CONTROL CIRCUIT OPEN? No Replace the original Horn Relay. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . Yes Go To 5 .
5. (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. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) . No Replace the Power Distribution Center. Perform BODY VERIFICATION TEST - VER 1. «(Refer to BODY VERIFICATION TEST - VER 1)»(ref-255944-S31737016002007060500000) .