Hands Free Module (Hfm) - Electrical Diagnostics: Other Dodge Durango III

WHEN MONITORED

With the ignition on.

SET CONDITION

The Hands Free Module (HFM) detects a short to ground or an open on the (X712) Microphone 1 IN (+) circuit.

POSSIBLE CAUSES

Scheme 251

Scheme 252

Scheme 253

Scheme 254

1. CHECK FOR ACTIVE DTC NOTE: Verify the connection of the Rearview Mirror harness connector. Turn the ignition on. With the scan tool, read the active DTCs. Does the scan tool display B143B-MICROPHONE 1 CIRCUIT LOW as active? Yes Go To 2 . No Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465990-S29694203322012042300000) .
2. CHECK THE (X793) MICROPHONE FEED CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Inside Rearview Mirror harness connector. Turn the ignition on. Measure the voltage between the (X793) Microphone Feed circuit and ground. Is the voltage above 10.0 volts? Yes Go To 3 . No Repair the (X793) Microphone Feed circuit for an open or a short to ground. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465990-S29694203322012042300000) .
3. CHECK THE INSIDE REARVIEW MIRROR Turn the ignition off. Connect a jumper wire between the (X793) Microphone Feed and the (X712) Microphone 1 IN (+) circuits. Turn the ignition on. With the scan tool, read the DTCs. NOTE: DTC B143C-MICROPHONE 1 CIRCUIT HIGH should display as active as a result of this test. Does the scan tool display B143B-MICROPHONE 1 CIRCUIT LOW as active? Yes Go To 4 . No Replace the Inside Rearview Mirror in accordance with the Service Information. Refer to «MIRROR, REARVIEW , REMOVAL»(ref-465921-S19421942362012042300000) . Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465990-S29694203322012042300000) .
4. CHECK THE (X712) MICROPHONE 1 IN (+) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Hands Free Module harness connector. Measure the resistance of the (X712) Microphone 1 IN (+) circuit between the Inside Rearview Mirror and Hands Free Module harness connectors. Is the resistance above 10K Ohms? Yes Repair the (X712) Microphone 1 IN (+) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465990-S29694203322012042300000) . No Go To 5 .
5. CHECK THE (X712) MICROPHONE 1 IN (+) CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (X712) Microphone 1 IN (+) circuit. Is the resistance below 10K Ohms? Yes Repair the (X712) Microphone 1 IN (+) circuit for short to ground. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465990-S29694203322012042300000) . No Replace the Hands Free Module in accordance with the Service Information. Refer to «MODULE, HANDS FREE (HFM) , REMOVAL»(ref-465981-S26968768372012042300000) . Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465990-S29694203322012042300000) .

B143C-MICROPHONE 1 CIRCUIT HIGH

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

With the ignition on.

The Hands Free Module (HFM) detects a short to voltage on the (X712) Microphone 1 IN (+) circuit.

Scheme 255

Scheme 256

1. CHECK FOR ACTIVE DTC NOTE: Verify the connection of the Rearview Mirror harness connector. Turn the ignition on. With the scan tool, read the active DTCs. Does the scan tool display B143C-MICROPHONE 1 CIRCUIT HIGH as active? Yes Go To 2 . No Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465990-S29694203322012042300000) .
2. CHECK THE INSIDE REARVIEW MIRROR Turn the ignition off. Disconnect the Rearview Mirror harness connector. Turn the ignition on. With the scan tool, read the active DTCs. Does the scan tool display B143C-MICROPHONE 1 CIRCUIT HIGH as active? Yes Go To 3 . No Replace the Rearview Mirror in accordance with the Service Information. Refer to «MIRROR, REARVIEW , REMOVAL»(ref-465921-S19421942362012042300000) . Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465990-S29694203322012042300000) .
3. CHECK THE (X712) MICROPHONE 1 IN (+) CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off. Disconnect the Hands Free Module harness connector. Turn the ignition on. Measure the voltage of the (X712) Microphone circuit. Is the voltage above 1.0 volt? Yes Repair the (X712) Microphone circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465990-S29694203322012042300000) . No Replace the Hands Free Module in accordance with the Service Information. Refer to «MODULE, HANDS FREE (HFM) , REMOVAL»(ref-465981-S26968768372012042300000) . Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465990-S29694203322012042300000) .

B143E-MICROPHONE 2 CIRCUIT LOW

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

With the ignition on.

The Hands Free Module (HFM) detects a short to ground or an open on the (X722) Microphone 2 IN (+) circuit.

Scheme 257

Scheme 258

Scheme 259

1. CHECK FOR ACTIVE DTC NOTE: Verify the connection of the Rearview Mirror harness connector. Turn the ignition on. With the scan tool, read the active DTCs. Does the scan tool display B143E-MICROPHONE 2 CIRCUIT LOW as active? Yes Go To 2 . No Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465990-S29694203322012042300000) .
2. CHECK THE (X793) MICROPHONE FEED CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Inside Rearview Mirror harness connector. Turn the ignition on. Measure the voltage between the (X793) Microphone Feed circuit and ground. Is the voltage above 10.0 volts? Yes Go To 3 . No Repair the (X793) Microphone Feed circuit for an open or a short to ground. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465990-S29694203322012042300000) .
3. CHECK THE INSIDE REARVIEW MIRROR Turn the ignition off. Connect a jumper wire between the (X793) Microphone Feed and the (X722) Microphone 2 IN (+) circuits. Turn the ignition on. With the scan tool, read the DTCs. NOTE: DTC B143F-MICROPHONE 2 CIRCUIT HIGH should display as active as a result of this test. Does the scan tool display B143E-MICROPHONE 2 CIRCUIT LOW as active? Yes Go To 4 . No Replace the Inside Rearview Mirror in accordance with the Service Information. Refer to «MIRROR, REARVIEW , REMOVAL»(ref-465921-S19421942362012042300000) . Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465990-S29694203322012042300000) .
4. CHECK THE (X722) MICROPHONE 2 IN (+) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Hands Free Module harness connector. Measure the resistance of the (X722) Microphone 2 IN (+) circuit between the Inside Rearview Mirror and Hands Free Module harness connectors. Is the resistance above 10K Ohms? Yes Repair the (X722) Microphone 2 IN (+) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465990-S29694203322012042300000) . No Go To 5 .
5. CHECK THE (X722) MICROPHONE 2 IN (+) CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (X722) Microphone 2 IN (+) circuit. Is the resistance below 10K Ohms? Yes Repair the (X722) Microphone 2 IN (+) circuit for short to ground. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465990-S29694203322012042300000) . No Replace the Hands Free Module in accordance with the Service Information. Refer to «MODULE, HANDS FREE (HFM) , REMOVAL»(ref-465981-S26968768372012042300000) . Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465990-S29694203322012042300000) .

B143F-MICROPHONE 2 CIRCUIT HIGH

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

With the ignition on.

The Hands Free Module (HFM) detects a short to voltage on the (X722) Microphone 2 IN (+) circuit.

Scheme 260

1. CHECK FOR ACTIVE DTC NOTE: Verify the connection of the Rearview Mirror harness connector. Turn the ignition on. With the scan tool, read the active DTCs. Does the scan tool display B143F-MICROPHONE 2 CIRCUIT HIGH as active? Yes Go To 2 . No Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465990-S29694203322012042300000) .
2. CHECK THE INSIDE REARVIEW MIRROR Turn the ignition off. Disconnect the Rearview Mirror harness connector. Turn the ignition on. With the scan tool, read the active DTCs. Does the scan tool display B143F-MICROPHONE 2 CIRCUIT HIGH as active? Yes Go To 3 . No Replace the Rearview Mirror in accordance with the Service Information. Refer to «MIRROR, REARVIEW , REMOVAL»(ref-465921-S19421942362012042300000) . Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465990-S29694203322012042300000) .
3. CHECK THE (X722) MICROPHONE CIRCUITS FOR A SHORT TO VOLTAGE Turn the ignition off. Disconnect the Hands Free Module harness connector. Turn the ignition on. Measure the voltage of the (X722) Microphone circuit. Is the voltage above 1.0 volt? Yes Repair the (X722) Microphone circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465990-S29694203322012042300000) . No Replace the Hands Free Module in accordance with the Service Information. Refer to «MODULE, HANDS FREE (HFM) , REMOVAL»(ref-465981-S26968768372012042300000) . Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-465990-S29694203322012042300000) .

With the ignition on.

The Hands Free Module will receive and monitor the VIN message from the PCM. The Hands Free Module will set this code if the VIN recorded in the module is different from the VIN message received from the PCM.

Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fuse installed.

The controller detects a short to ground on the CAN Interior Bus (125K) (+) circuit or a short to voltage on the CAN Interior Bus (125K) (-) circuit.

Continuously when the ignition is on.

The battery voltage between 10.0 and 16.0 Volts.

Ignition Off Draw (IOD) fuse installed.

Totally Integrated Power Module (TIPM) is configured correctly.

Bus messages not received from the Totally Integrated Power Module (TIPM) for approximately two to five seconds.

Continuously when the ignition is on.

The battery voltage is between 10 and 16 volts.

Ignition Off Draw (IOD) fuse installed.

Totally Integrated Power Module (TIPM) is configured correctly.

Bus messages not received from the Instrument Cluster (CCN) for approximately two to five seconds.

Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fused installed.

Totally Integrated Power Module (TIPM) is configured correctly.

Bus messages not received from the Radio for approximately two to five seconds.