Park Assist Module (Pam) - Electrical Diagnostics: Diagnosis RAM Cab & Chassis 3500 HD

DIAGNOSTIC CODE INDEX

DIAGNOSTIC CODE INDEX

Scheme 1

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

DIAGNOSTIC TEST

1. CHECK FOR AN ACTIVE DTC NOTE: Before proceeding with this diagnostic procedure, remove any ice, snow, mud, dirt, or other obstructions from the front/rear fascia/bumper. Also remove any ice, snow, dirt, mud, or other obstructions from the underside of the Fascia/Bumper surrounding the sensors. Turn the ignition on. With the scan tool, read DTC's. Is this DTC 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.
2. PARK ASSIST SENSOR Verify that none of the possible causes mentioned above are present. Repair as necessary. If none of the possible causes mentioned above are present, view repair. Repair Replace the Park Assist Sensor in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) .

1. CHECK FOR AN ACTIVE DIAGNOSTIC TROUBLE CODE (DTC) Turn the ignition on. With the scan tool, read DTC's. Does the scan tool display this DTC 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-476553-S41784775912012060400000) .
2. (D703) PARK ASSIST SENSOR 9 SIGNAL CIRCUIT SHORTED TO BATTERY Turn the ignition off. Disconnect the Park Assist Module C2 harness connector. Disconnect the Park Assist Sensor harness connector. Turn the ignition on. Measure the voltage of the (D703) Park Assist Sensor 9 Signal circuit. Is the voltage above 10.0 volts? Yes Repair the (D703) Park Assist Sensor 9 Signal circuit for a short to battery. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) . No Go To 3 .
3. (D703) PARK ASSIST SENSOR 9 SIGNAL CIRCUIT SHORTED TO THE (X700) PARK ASSIST SENSOR SUPPLY CIRCUIT Turn the ignition off. Measure the resistance between the (D703) Park Assist Sensor 9 Signal circuit and the (X700) Park Assist Sensor Supply circuit. Is the resistance below 10K Ohms? Yes Repair the (D703) Park Assist Sensor 9 Signal circuit for a short to the (X700) Park Assist Sensor Supply circuit. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) . No Go To 4 .
4. (X750) PARK ASSIST SENSOR GROUND CIRCUIT OPEN Reconnect the Park Assist Module C2 harness connector. Measure the resistance between ground and the (X750) Park Assist Sensor Ground circuit. Is the resistance above 20.0 Ohms? Yes Go To 5 . No Replace the Park Assist Sensor that caused this DTC to change from active to stored after disconnecting it in accordance with the Service Information. Refer to «SENSOR, PARK ASSIST, REMOVAL»(ref-476531-S08877457442012060400000) . Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) .
5. (X750) PARK ASSIST SENSOR GROUND CIRCUIT OPEN BETWEEN PARK ASSIST MODULE AND SENSOR Disconnect the Park Assist Module C2 harness connector. Measure the resistance of the (X750) Park Assist Sensor Ground circuit. Is the resistance above 5.0 Ohms? Yes Repair the open in the (X750) Park Assist Sensor Ground circuit. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) . No Replace the Park Assist Module in accordance with the Service Information. Refer to «MODULE, PARK ASSIST, REMOVAL»(ref-476531-S09021570182012060400000) . Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) .

1. CHECK FOR AN ACTIVE DTC NOTE: Before proceeding with this diagnostic procedure, remove any ice, snow, mud, dirt, or other obstructions from the front/rear fascia/bumper. Also remove any ice, snow, dirt, mud, or other obstructions from the underside of the Fascia/Bumper surrounding the sensors. Turn the ignition on. With the scan tool, read DTC's. Is this DTC 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.
2. PARK ASSIST SENSOR Verify that none of the possible causes mentioned above are present. Repair as necessary. If none of the possible causes mentioned above are present, view repair. Repair Replace the Park Assist Sensor in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) .

1. CHECK FOR AN ACTIVE DIAGNOSTIC TROUBLE CODE (DTC) Turn the ignition on. With the scan tool, read DTC's. Does the scan tool display this DTC 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-476553-S41784775912012060400000) .
2. (D704) PARK ASSIST SENSOR 10 SIGNAL CIRCUIT SHORTED TO BATTERY Turn the ignition off. Disconnect the Park Assist Module C2 harness connector. Disconnect the Park Assist Sensor harness connector. Turn the ignition on. Measure the voltage of the (D704) Park Assist Sensor 10 Signal circuit. Is the voltage above 10.0 volts? Yes Repair the (D704) Park Assist Sensor 10 Signal circuit for a short to battery. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) . No Go To 3 .
3. (D704) PARK ASSIST SENSOR 10 SIGNAL CIRCUIT SHORTED TO THE (X700) PARK ASSIST SENSOR SUPPLY CIRCUIT Turn the ignition off. Measure the resistance between the (D704) Park Assist Sensor 10 Signal circuit and the (X700) Park Assist Sensor Supply circuit. Is the resistance below 10K Ohms? Yes Repair the (D704) Park Assist Sensor 10 Signal circuit for a short to the (X700) Park Assist Sensor Supply circuit. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) . No Go To 4 .
4. (X750) PARK ASSIST SENSOR GROUND CIRCUIT OPEN Reconnect the Park Assist Module C2 harness connector. Measure the resistance between ground and the (X750) Park Assist Sensor Ground circuit. Is the resistance above 20.0 Ohms? Yes Go To 5 . No Replace the Park Assist Sensor in accordance with the Service Information. Refer to «SENSOR, PARK ASSIST, REMOVAL»(ref-476531-S08877457442012060400000) . Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) .
5. (X750) PARK ASSIST SENSOR GROUND CIRCUIT OPEN BETWEEN PARK ASSIST MODULE AND SENSOR Disconnect the Park Assist Module C2 harness connector. Measure the resistance of the (X750) Park Assist Sensor Ground circuit. Is the resistance above 5.0 Ohms? Yes Repair the open in the (X750) Park Assist Sensor Ground circuit. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) . No Replace the Park Assist Module in accordance with the Service Information. Refer to «SENSOR, PARK ASSIST, REMOVAL»(ref-476531-S08877457442012060400000) . Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) .

1. CHECK FOR AN ACTIVE DTC NOTE: Before proceeding with this diagnostic procedure, remove any ice, snow, mud, dirt, or other obstructions from the front/rear fascia/bumper. Also remove any ice, snow, dirt, mud, or other obstructions from the underside of the Fascia/Bumper surrounding the sensors. Turn the ignition on. With the scan tool, read DTC's. Is this DTC 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.
2. PARK ASSIST SENSOR Verify that none of the possible causes mentioned above are present. Repair as necessary. If none of the possible causes mentioned above are present, view repair. Repair Replace the Park Assist Sensor in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) .

1. CHECK FOR AN ACTIVE DIAGNOSTIC TROUBLE CODE (DTC) Turn the ignition on. With the scan tool, read DTC's. Does the scan tool display this DTC 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-476553-S41784775912012060400000) .
2. (D710) PARK ASSIST SENSOR 11 SIGNAL CIRCUIT SHORTED TO BATTERY Turn the ignition off. Disconnect the Park Assist Module C2 harness connector. Disconnect the Park Assist Sensor 11 harness connector. Turn the ignition on. Measure the voltage of the (D710) Park Assist Sensor 11 Signal circuit. Is the voltage above 10.0 volts? Yes Repair the (D710) Park Assist Sensor 11 Signal circuit for a short to battery. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) . No Go To 3 .
3. (D710) PARK ASSIST SENSOR 11 SIGNAL CIRCUIT SHORTED TO THE (X700) PARK ASSIST SENSOR SUPPLY CIRCUIT Turn the ignition off. Measure the resistance between the (D710) Park Assist Sensor 11 Signal circuit and the (X700) Park Assist Sensor Supply circuit. Is the resistance below 10K Ohms? Yes Repair the (D710) Park Assist Sensor 11 Signal circuit for a short to the (X700) Park Assist Sensor Supply circuit. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) . No Go To 4 .
4. (X750) PARK ASSIST SENSOR GROUND CIRCUIT OPEN Reconnect the Park Assist Module C2 harness connector. Measure the resistance between ground and the (X750) Park Assist Sensor Ground circuit. Is the resistance above 20.0 Ohms? Yes Go To 5 . No Replace the Park Assist Sensor in accordance with the Service Information. Refer to «SENSOR, PARK ASSIST, REMOVAL»(ref-476531-S08877457442012060400000) . Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) .
5. (X750) PARK ASSIST SENSOR GROUND CIRCUIT OPEN BETWEEN PARK ASSIST MODULE AND SENSOR Disconnect the Park Assist Module C2 harness connector. Measure the resistance of the (X750) Park Assist Sensor Ground circuit. Is the resistance above 5.0 Ohms? Yes Repair the open in the (X750) Park Assist Sensor Ground circuit. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) . No Replace the Park Assist Module in accordance with the Service Information. Refer to «SENSOR, PARK ASSIST, REMOVAL»(ref-476531-S08877457442012060400000) . Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) .

1. CHECK FOR AN ACTIVE DTC NOTE: Before proceeding with this diagnostic procedure, remove any ice, snow, mud, dirt, or other obstructions from the front/rear fascia/bumper. Also remove any ice, snow, dirt, mud, or other obstructions from the underside of the Fascia/Bumper surrounding the sensors. Turn the ignition on. With the scan tool, read DTC's. Is this DTC 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.
2. PARK ASSIST SENSOR Verify that none of the possible causes mentioned above are present. Repair as necessary. If none of the possible causes mentioned above are present, view repair. Repair Replace the Park Assist Sensor in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) .

1. CHECK FOR ACTIVE DTC Turn the ignition on. Apply the vehicle park brake. Shift the transmission into reverse. With the scan tool, record and erase Park Assist Module DTC's. Wait 30 seconds. With the scan tool, read Park Assist Module DTC's. Is this DTC active? Yes Go To 2 . No The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) .
2. VERIFY OPERATION OF THE VEHICLE CHARGING SYSTEM NOTE: Troubleshoot any Powertrain Control Module (PCM) charging/cranking DTC's before proceeding. NOTE: Make sure the battery is fully charged. Are any charging system DTC's present? Yes Refer to «CHARGING SYSTEM - DIAGNOSIS AND TESTING»(ref-476520-S37397232942012060400000) and perform the active charging system or battery diagnostic procedure. No Replace the Park Assist Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) .

1. CHECK FOR ACTIVE DTC Turn the ignition on. Apply the vehicle park brake. Shift the transmission into reverse. With the scan tool, record and erase Park Assist Module DTC's. Wait 30 seconds. With the scan tool, read Park Assist Module DTC's. Is this DTC active? Yes Go To 2 . No The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) .
2. VERIFY OPERATION OF THE VEHICLE CHARGING SYSTEM NOTE: Troubleshoot any Powertrain Control Module (PCM) charging/cranking DTC's before proceeding. NOTE: Make sure the battery is fully charged. Are any charging system DTC's present? Yes Refer to «CHARGING SYSTEM - DIAGNOSIS AND TESTING»(ref-476520-S37397232942012060400000) and perform the active charging system or battery diagnostic procedures. No Replace the Park Assist Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) .

Scheme 2

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

Note. The numbering system for the park assist sensors allows for up to twelve sensors on the vehicle, six front and six rear. The sensors are numbered in a clockwise manner starting at the left front bumper. The left front sensor (if equipped with front park assist) is the number 1 sensor. The numbering continues in a clockwise direction around the vehicle. Since Chrysler LLC vehicles use only four rear sensors, sensor numbers 7 and 12 are omitted, so the left rear sensor is the number 11 sensor.

1. CHECK VEHICLE LINE IN THE PCM With the scan tool, compare the vehicle line that is programmed in to the Powertrain Control Module (PCM) to the vehicle line of the vehicle. Does the vehicle line programmed into the PCM match the vehicle? Yes Replace the Park Assist Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) . No The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) .

1. REPLACE THE PARK ASSIST MODULE View Repair Repair Replace the Park Assist Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) .

1. VERIFY DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE NOTE: Make sure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding. Using the scan tool, read active DTC's. Is this DTC active? Yes Refer to «TIPM - DIAGNOSIS AND TESTING»(ref-476553-S10470145732012060400000) and perform the U0010-CAN Interior Bus diagnostic procedure. No Refer to «COMMUNICATION - DIAGNOSIS AND TESTING»(ref-476525-S20739439882012060400000) and perform the Stored Lost Communication DTC's diagnostic procedure.

1. CHECK FOR ACTIVE DTC Turn the ignition on. With the scan tool, record and erase Park Assist Module DTC's. Wait 30 seconds. With the scan tool, read Park Assist Module DTC's. Is this DTC active? Yes Go To 2 . No The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) .
2. INSTRUMENT CLUSTER IS ACTIVE ON THE CAN C INTERIOR BUS With the scan tool, select ECU View. Verify that the Instrument Cluster is active on the bus. Is the Instrument Cluster active on the bus? Yes Go To 3 . No Refer to «COMMUNICATION - DIAGNOSIS AND TESTING»(ref-476525-S20739439882012060400000) and perform the No Response from Cluster/CCN diagnostic procedure.
3. DTC's STORED OR ACTIVE IN THE INSTRUMENT CLUSTER Check for Ignition Switch DTC's in the Instrument Cluster. Are any DTC's active or stored in the Instrument Cluster? Yes Refer to «CCN - DIAGNOSIS AND TESTING»(ref-476584-S20972066642012060400000) and perform the appropriate diagnostic procedure. No Go To 4 .
4. ACTIVE DTC's IN THE TIPM With the scan tool, select ECU View and select TIPM. With the scan tool, read active DTC's. Are any Communication DTC's active in the TIPM Park Assist System? Yes Refer to «TIPM - DIAGNOSIS AND TESTING»(ref-476553-S10470145732012060400000) and perform the appropriate diagnostic procedure. No Replace and program the Park Assist Module in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) .

1. VERIFY THE DTC IS ACTIVE NOTE: Make sure the IOD fuse is installed and the battery is fully charged before proceeding. Turn the ignition on. With the scan tool, read active DTC's. Is the DTC active at this time? Yes Perform the U0141-Lost Communication with IPM (FCM/TIPM) diagnostic procedure. Refer to «TIPM - DIAGNOSIS AND TESTING»(ref-476553-S10470145732012060400000) . No Perform the Stored Lost Communication DTC's diagnostic procedure. Refer to «COMMUNICATION - DIAGNOSIS AND TESTING»(ref-476525-S20739439882012060400000) .

1. VERIFY DTC IS ACTIVE NOTE: Make sure the IOD fuse is installed and the battery is fully charged before proceeding. Turn the ignition on. With the scan tool, read active DTC's. Is this DTC active? Yes Refer to «TIPM - DIAGNOSIS AND TESTING»(ref-476553-S10470145732012060400000) and perform the U0155-Lost Communication with Cluster/CCN diagnostic procedure. No Refer to «COMMUNICATION - DIAGNOSIS AND TESTING»(ref-476525-S20739439882012060400000) and perform the Stored Lost Communication DTC's diagnostic procedure.