Parking Aid System: Diagnosis Ford Escape II

Inspection and Verification

1. Verify the customer concern.
2. Visually inspect for obvious signs of electrical damage. VISUAL INSPECTION CHART Electrical Smart Junction Box (SJB) fuse 35 (10A) Parking Aid Module (PAM) Parking aid sensors Parking aid disable switch Parking aid speaker Reversing lamps Wiring, terminals or connectors
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
4. If the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).
5. If the scan tool does not communicate with the VCM: Check the VCM connection to the vehicle. Check the scan tool connection to the VCM. Refer to «MODULE COMMUNICATIONS NETWORK»(ref-344076) , No Power To The Scan Tool, to diagnose no power to the scan tool.
6. If the scan tool does not communicate with the vehicle: Verify the ignition key is in the ON position. Verify the scan tool operation with a known good vehicle. Refer to «MODULE COMMUNICATIONS NETWORK»(ref-344076) to diagnose no response from the PCM.
7. Carry out the network test. If the scan tool responds with no communication for one or more modules, refer to «MODULE COMMUNICATIONS NETWORK»(ref-344076) . If the network test passes, retrieve and record the continuous memory DTCs.
8. Clear the continuous DTCs and carry out the self-test diagnostics for the PAM.
9. If the DTCs retrieved are related to the concern, go to «DTC CHARTS»(ref-344149-S20847747172009101600000) . For all other DTCs, refer to the Diagnostic Trouble Code (DTC) Chart in «MULTIFUNCTION ELECTRONIC MODULES»(ref-344077) .
10. If no DTCs related to the concern are retrieved, GO to «SYMPTOM CHART»(ref-344149-S21565894912009101600000) . PID CHART PID Description LRI_DIST Left rear inner parking aid sensor distance LRO_DIST Left rear outer parking aid sensor distance RRI_DIST Right rear inner parking aid sensor distance RRO_DIST Right rear outer parking aid sensor distance LRI_ATTEN Left rear inner attenuation time LRO_ATTEN Left rear outer attenuation time RRI_ATTEN Right rear inner attenuation time RRO_ATTEN Right rear outer attenuation time TRANSGR Transmission gear position

DTC Charts

PARKING AID MODULE (PAM) DTC CHART

Symptom Chart

SYMPTOM CHART

Pinpoint Test A: The Parking Aid Is Inoperative/Does Not Operate Correctly

Refer to SYSTEM WIRING DIAGRAMS - ESCAPE or SYSTEM WIRING DIAGRAMS - MARINER , Parking Aid for schematic and connector information.

Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

Scheme 1

Scheme 2

Scheme 3

Scheme 4

1. A1 CHECK THE REAR BUMPER COVER AND THE PARKING AID SENSORS FOR CORRECT ALIGNMENT NOTE: If the vehicle was in a collision, the parking aid sensors may not be aligned correctly. NOTE: The bumper cover must be clean and free of ice in order to operate correctly. Check the rear bumper cover and parking aid sensors for correct alignment and signs of collision damage. Is the bumper cover alignment and parking aid sensor alignment correct? Yes: GO to A2 . No: REALIGN or INSTALL a new bumper cover. REFER to «BUMPERS»(ref-344129) . If the vehicle was in a collision, additional body work may be required to bring the parking aid sensors into correct alignment.
2. A2 CHECK FOR RECORDED DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND PAM SELF-TESTS Check for recorded PAM DTCs from the continuous and on-demand self-tests. Are any PAM DTCs recorded? Yes: REFER to «DTC CHARTS»(ref-344149-S20847747172009101600000) . No: For no communication with the PAM, REFER to «MODULE COMMUNICATIONS NETWORK»(ref-344076) . For PAM system pass, GO to A3 .
3. A3 VERIFY THE PAM OPERATION Test the parking aid system operation: Carry out the azimuth system check. Refer to «AZIMUTH SYSTEM CHECK»(ref-344149-S03549738062009101600000) . Carry out the elevation system check. Refer to «ELEVATION SYSTEM CHECK»(ref-344149-S25159250512009101600000) . Does the parking aid system pass at least one of the above system checks? Yes: GO to A9 . No: GO to A4
4. A4 CHECK THE REVERSING LAMPS OPERATION Apply the parking brake. Ignition ON. Select REVERSE. Check the reversing lamps operation. Do the reversing lamps operate correctly? Yes: GO to A5 . No: REFER to «EXTERIOR LIGHTING»(ref-344079) .
5. A5 CHECK THE PAM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: PAM C4014. Ignition ON. Select REVERSE. Measure the voltage between the PAM C4014-3, circuit CBB07 (GN/BU), harness side and ground. Is the voltage greater than 10 volts? Yes: GO to A6 . No: REPAIR the circuit. TEST the system for normal operation.
6. A6 CHECK THE PAM DISABLE SWITCH CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Parking Aid Disable Switch C2035. Measure the resistance between the parking aid disable switch C2035-6, circuit CMP18 (GN/BN), harness side and the PAM C4014-11, circuit CMP18 (GN/BN), harness side. Is the resistance less than 5 ohms? Yes: GO to A7 . No: REPAIR the circuit. TEST the system for normal operation.
7. A7 CHECK THE PAM DISABLE SWITCH GROUND CIRCUIT FOR AN OPEN Disconnect: Negative Battery Cable. Measure the resistance between the parking aid disable switch C2035-2, circuit GD114 (BK/BU), harness side and ground. Is the resistance less than 5 ohms? Yes: GO to A8 . No: REPAIR the circuit. TEST the system for normal operation.
8. A8 CHECK THE PARKING AID DISABLE SWITCH FOR AN OPEN Connect: Parking Aid Disable Switch C2035. Measure the resistance between the PAM C4014-11, circuit CMP18 (GN/BN), harness side and ground while pressing the parking aid disable switch. Is the resistance less than 5 ohms with the switch pressed? Yes: GO to A9 . No: INSTALL a new parking aid disable switch. REFER to «PARKING AID SWITCH»(ref-344149-S17808062882009101600000) . TEST the system for normal operation.
9. A9 MONITOR THE PAM DISTANCE PIDs Enter the following diagnostic mode on the scan tool: Parking Aid PID. Monitor the PAM distance PIDs while moving a test object into and out of the azimuth field directly behind each of the rear sensors: PID DESCRIPTION CHART PID Description LRI_DIST Left rear inner parking aid sensor distance LRO_DIST Left rear outer parking aid sensor distance RRI_DIST Right rear inner parking aid sensor distance RRO_DIST Right rear outer parking aid sensor distance Do the PID readings correspond to the approximate distance between sensor and test object? Yes: GO to A10 . No: INSTALL a new sensor(s) for the one in question. REFER to «PARKING AID SENSOR»(ref-344149-S22198923742009101600000) . CLEAR the DTCs. REPEAT the self-test.
10. A10 CHECK FOR CORRECT PAM OPERATION Disconnect the PAM connector. Check for: corrosion damaged pins pushed-out pins Connect the PAM connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes: INSTALL a new PAM. REFER to «PARKING AID MODULE (PAM)»(ref-344149-S14374169652009101600000) . TEST the system for normal operation. No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.

Pinpoint Test B: DTC C1700, C1703, C1706 Or C1709

Refer to SYSTEM WIRING DIAGRAMS - ESCAPE or SYSTEM WIRING DIAGRAMS - MARINER , Parking Aid for schematic and connector information.

Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

1. B1 RETRIEVE THE DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND PAM SELF-TESTS Check the PAM DTCs from the continuous and on-demand self-tests. Are multiple DTCs recorded? Yes: GO to B2 . No: For DTCs C1700, C1703, C1706 or C1709, GO to B3 . For all other DTCs, REFER to «DTC CHARTS»(ref-344149-S20847747172009101600000) .
2. B2 CHECK THE BUMPER WIRING HARNESS Inspect the bumper wiring harness for opens, shorts, grounds, or corrosion. Is the bumper wiring harness OK? Yes: GO to B3 . No: REPAIR or INSTALL a new bumper wiring harness. CLEAR the DTCs. REPEAT the self-test.
3. B3 CHECK THE SENSOR CIRCUITRY FOR OPENS Ignition OFF. Disconnect: Suspect Parking Aid Sensor C4009, C4010, C4011 and C4012. Disconnect: PAM C4014. Measure the resistance between the PAM C4014, harness side and the suspect parking aid sensor, harness side as follows: DTC CHART DTC Rear Sensor PAM Connector-Pin Sensor Connector-Pin Circuit C1700 LH outer C4014-9 C4009-1 LMP07 (BU/WH) C1700 LH outer C4014-15 C4009-2 VMP15 (YE/GN) C1700 LH outer C4014-12 C4009-3 RMP07 (GN/WH) C1703 RH outer C4014-9 C4011-1 LMP07 (BU/WH) C1703 RH outer C4014-16 C4011-2 VMP17 (YE/OG) C1703 RH outer C4014-12 C4011-3 RMP07 (GN/WH) C1706 LH inner C4014-9 C4010-1 LMP07 (BU/WH) C1706 LH inner C4014-14 C4010-2 VMP14 (WH/OG) C1706 LH inner C4014-12 C4010-3 RMP07 (GN/WH) C1709 RH inner C4014-9 C4012-1 LMP07 (BU/WH) C1709 RH inner C4014-13 C4012-2 VMP16 (YE/GY) C1709 RH inner C4014-12 C4012-3 RMP07 (GN/WH) Are the resistances less than 5 ohms? Yes: GO to B4 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
4. B4 CHECK THE SENSOR CIRCUITRY FOR SHORTS TO GROUND Measure the resistance between the suspect parking aid sensor, harness side and ground as follows: DTC CHART DTC Rear Sensor Connector-Pin Circuit C1700 LH outer C4009-2 VMP15 (YE/GN) C1703 RH outer C4011-2 VMP17 (YE/OG) C1706 LH inner C4010-2 VMP14 (WH/OG) C1709 RH inner C4012-2 VMP16 (YE/GY) Are the resistances greater than 10,000 ohms? Yes: If all of the parking aid sensors recorded DTCs, GO to B5 . If one or more parking aid sensor(s) recorded DTCs, INSTALL a new sensor(s) for the one in question. REFER to «PARKING AID SENSOR»(ref-344149-S22198923742009101600000) . CLEAR the DTCs. REPEAT the self-test. No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
5. B5 CHECK FOR CORRECT PAM OPERATION Disconnect the PAM connector. Check for: corrosion damaged pins pushed-out pins Connect the PAM connector and make sure it seats correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes: INSTALL a new PAM. REFER to «PARKING AID MODULE (PAM)»(ref-344149-S14374169652009101600000) . TEST the system for normal operation. No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.

Pinpoint Test C: DTC C1699, C1702, C1705 Or C1708

Refer to SYSTEM WIRING DIAGRAMS - ESCAPE or SYSTEM WIRING DIAGRAMS - MARINER , Parking Aid for schematic and connector information.

Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Scheme 5

1. C1 RETRIEVE THE DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND PAM SELF-TESTS Check the PAM DTCs from the continuous and on-demand self-tests. Are multiple DTCs recorded? Yes: GO to C2 . No: For DTCs C1699, C1702, C1705 or C1708, GO to C3 . For all other DTCs, REFER to «DTC CHARTS»(ref-344149-S20847747172009101600000) .
2. C2 CHECK THE BUMPER WIRING HARNESS Inspect the bumper wiring harness for opens, shorts, grounds, or corrosion. Is the bumper wiring harness OK? Yes: GO to C3 . No: REPAIR or INSTALL a new bumper wiring harness. CLEAR the DTCs. REPEAT the self-test.
3. C3 CHECK THE SENSOR CIRCUITRY FOR SHORTS TO VOLTAGE Ignition OFF. Disconnect: Suspect Parking Aid Sensor C4009, C4010, C4011 and C4012. Disconnect: PAM C4014. Ignition ON. Measure the voltage between the suspect parking aid sensor, harness side and ground as follows: DTC CHART DTC Rear Sensor Connector-Pin Circuit C1699 LH outer C4009-2 VMP15 (YE/GN) C1702 RH outer C4011-2 VMP17 (YE/OG) C1705 LH inner C4010-2 VMP14 (WH/OG) C1708 RH inner C4012-2 VMP16 (YE/GY) Is any voltage present? Yes: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test. No: GO to C4 .
4. C4 CHECK THE PARKING AID SENSORS Install a known good parking aid sensor(s) for each of the suspect parking aid sensor(s). Clear the DTCs. Repeat the self-test. Test the system for normal operation. Is the concern still present? Yes: If all of the parking aid sensors recorded DTCs prior, GO to C5 . If one or more parking aid sensor(s) recorded DTCs, INSTALL a new sensor(s) for the one in question. REFER to «PARKING AID SENSOR»(ref-344149-S22198923742009101600000) . CLEAR the DTCs. REPEAT the self-test. No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
5. C5 CHECK FOR CORRECT PAM OPERATION Disconnect the PAM connector. Check for: corrosion damaged pins pushed-out pins Connect the PAM connector and make sure it seats correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes: INSTALL a new PAM. REFER to «PARKING AID MODULE (PAM)»(ref-344149-S14374169652009101600000) . TEST the system for normal operation. No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.

Pinpoint Test D: DTC C1701, C1704, C1707 Or C1710

Refer to SYSTEM WIRING DIAGRAMS - ESCAPE or SYSTEM WIRING DIAGRAMS - MARINER , Parking Aid for schematic and connector information.

1. D1 CHECK THE DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND PAM SELF-TESTS Check the PAM DTCs from the continuous and on-demand self-tests. Are parking aid DTCs other than C1701, C1704, C1707 or C1710 recorded? Yes: DIAGNOSE the other DTCs first. REFER to «DTC CHARTS»(ref-344149-S20847747172009101600000) . No: GO to D2 .
2. D2 CHECK THE PARKING AID SENSOR OPERATION NOTE: Make sure the area around the vehicle is clear of anything that might activate the parking aid system. Clean the rear bumper and sensors with high-pressure water. Carry out the azimuth system check. Refer to «AZIMUTH SYSTEM CHECK»(ref-344149-S03549738062009101600000) . Carry out the elevation system check. Refer to «ELEVATION SYSTEM CHECK»(ref-344149-S25159250512009101600000) . Does the parking aid system pass both system checks? Yes: The system is operating correctly at this time. The concern may have been caused by a dirty or blocked parking aid sensor. CLEAR the DTCs. REPEAT the self-test. No: GO to D3 .
3. D3 CHECK THE PARKING AID SENSOR DISTANCE PIDs Make sure the suspect parking aid sensor(s) is flush-mounted in the bezel. Ignition ON. Enter the following diagnostic mode on the scan tool: Parking Aid PID. With the brake pedal applied, shift the transmission into REVERSE (R) and monitor the parking aid sensor distance PID. The PID will read 255 cm (100 in) on a correctly functioning sensor. Does the PID read 255 cm (100 in)? Yes: GO to D4 . No: GO to D5 .
4. D4 CHECK THE PARKING AID SENSOR ATTENUATION PIDs Check the parking aid sensor attenuation PIDs. Do the attenuation PIDs read between 0 and 16? Yes: GO to D6 . No: GO to D5 .
5. D5 INSTALL A KNOWN GOOD SENSOR Install a known good sensor for the suspect parking aid sensor. Ignition ON. Clear the DTCs. Repeat the self-test. Operate the system and verify the concern is still present. Is the concern still present? Yes: GO to D6 . No: INSTALL a new parking aid sensor. REFER to «PARKING AID SENSOR»(ref-344149-S22198923742009101600000) . CLEAR the DTCs. REPEAT the self-test.
6. D6 CHECK FOR CORRECT PAM OPERATION Disconnect the PAM connector. Check for: corrosion damaged pins pushed-out pins Connect the PAM connector and make sure it seats correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes: INSTALL a new PAM. REFER to «PARKING AID MODULE (PAM)»(ref-344149-S14374169652009101600000) . REPEAT the self-test. No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

Pinpoint Test E: DTC B1299

Refer to SYSTEM WIRING DIAGRAMS - ESCAPE or SYSTEM WIRING DIAGRAMS - MARINER , Parking Aid for schematic and connector information.

Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Scheme 6

Scheme 7

1. E1 CHECK THE BUMPER WIRING HARNESS Inspect the bumper wiring harness for opens, shorts, grounds, or corrosion. Is the bumper wiring harness OK? Yes: GO to E2 . No: REPAIR or INSTALL a new bumper wiring harness. CLEAR the DTCs. REPEAT the self-test.
2. E2 CHECK THE LH OUTER SENSOR FOR AN INTERNAL SHORT Ignition OFF. Disconnect: Parking Aid Sensor C4009. Ignition ON. Clear the DTCs. Repeat the on-demand self-test. Is DTC B1299 still present? Yes: GO to E3 . No: INSTALL a new LH outer parking aid sensor. REFER to «PARKING AID SENSOR»(ref-344149-S22198923742009101600000) . CLEAR the DTCs. REPEAT the self-test.
3. E3 CHECK THE RH OUTER SENSOR FOR AN INTERNAL SHORT Ignition OFF. Disconnect: Parking Aid Sensor C4011. Ignition ON. Clear the DTCs. Repeat the on-demand self-test. Is DTC B1299 still present? Yes: GO to E4 . No: INSTALL a new RH outer parking aid sensor. REFER to «PARKING AID SENSOR»(ref-344149-S22198923742009101600000) . CLEAR the DTCs. REPEAT the self-test.
4. E4 CHECK THE LH INNER SENSOR FOR AN INTERNAL SHORT Ignition OFF. Disconnect: Parking Aid Sensor C4010. Ignition ON. Clear the DTCs. Repeat the on-demand self-test. Is DTC B1299 still present? Yes: GO to E5 . No: INSTALL a new LH inner parking aid sensor. REFER to «PARKING AID SENSOR»(ref-344149-S22198923742009101600000) . CLEAR the DTCs. REPEAT the self-test.
5. E5 CHECK THE RH INNER SENSOR FOR AN INTERNAL SHORT Ignition OFF. Disconnect: Parking Aid Sensor C4012. Ignition ON. Clear the DTCs. Repeat the on-demand self-test. Is DTC B1299 still present? Yes: GO to E6 . No: INSTALL a new RH inner parking aid sensor. REFER to «PARKING AID SENSOR»(ref-344149-S22198923742009101600000) . CLEAR the DTCs. REPEAT the self-test.
6. E6 CHECK THE PARKING AID SENSOR VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO GROUND Ignition OFF. Disconnect: PAM C4014. Measure the resistance between the PAM C4014-9, circuit LMP07 (BU/WH), harness side and ground. Is the resistance greater than 10,000 ohms? Yes: GO to E7 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
7. E7 CHECK CIRCUIT LMP07 (BU/WH) FOR A SHORT TO CIRCUIT RMP07 (GN/WH) Ignition OFF. Measure the resistance between the PAM C4014-9, circuit LMP07 (BU/WH), harness side and the PAM C4014-12, circuit RMP07 (GN/WH). Is the resistance greater than 10,000 ohms? Yes: GO to E8 . No: REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
8. E8 CHECK FOR CORRECT PAM OPERATION Disconnect the PAM connector. Check for: corrosion damaged pins pushed-out pins Connect the PAM connector and make sure it seats correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes: INSTALL a new PAM. REFER to «PARKING AID MODULE (PAM)»(ref-344149-S14374169652009101600000) . TEST the system for normal operation. No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.

Pinpoint Test F: DTC C1742 or DTC C1743

Refer to SYSTEM WIRING DIAGRAMS - ESCAPE or SYSTEM WIRING DIAGRAMS - MARINER , Parking Aid for schematic and connector information.

Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Scheme 8

Scheme 9

Scheme 10

Scheme 11

Scheme 12

1. F1 USE THE RECORDED DTCs FROM THE PAM SELF-TEST Use the recorded results from the PAM self-test. Is DTC C1742 or C1743 recorded? Yes: GO to F2 . No: All other DTCs, REFER to «DTC CHARTS»(ref-344149-S20847747172009101600000) . If no DTCs are recorded, GO to «PINPOINT TEST A»(ref-344149-S18802932092009101600000) .
2. F2 MEASURE THE PARKING AID SPEAKER RESISTANCE Disconnect: Parking Aid Speaker C4015. Measure the resistance between parking aid speaker pin 1, component side and parking aid speaker pin 2, component side. Is the resistance between 40 and 60 ohms? Yes: If DTC C1742 was recorded, GO to F3 . If DTC C1743 was recorded, GO to F7 . No: INSTALL a new parking aid speaker. REFER to «PARKING AID MODULE (PAM)»(ref-344149-S14374169652009101600000) . CLEAR the DTCs. REPEAT the self-test
3. F3 CHECK THE PARKING AID SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND Connect: Parking Aid Speaker C4015. Disconnect: PAM C4014. Measure the resistance between the PAM J4014-2, circuit CMP09 (BN/BU), harness side and ground. Is the resistance greater than 10,000 ohms? Yes: GO to F5 . No: GO to F4 .
4. F4 CHECK THE PARKING AID SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND WITH THE PARKING AID SPEAKER DISCONNECTED Disconnect: Parking Aid Speaker Measure the resistance between the PAM C4014-2, circuit CMP09 (BN/BU), harness side and ground. Is the resistance greater than 10,000 ohms? Yes: REPAIR circuit RMP09 (BN/GN). CLEAR the DTCs. REPEAT the self-test. No: REPAIR circuit CMP09 (BN/BU). CLEAR the DTCs. REPEAT the self-test.
5. F5 CHECK THE PARKING AID SPEAKER (+) CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Parking Aid Speaker C4015. Disconnect: PAM C4014. Measure the resistance between the PAM C4014-2, circuit CMP09 (BN/BU), harness side and the parking aid speaker C4015-2, circuit CMP09 (BN/BU), harness side. Is the resistance less than 5 ohms? Yes: GO to F6 . No: REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
6. F6 CHECK THE PARKING AID SPEAKER (-) CIRCUIT FOR AN OPEN Measure the resistance between the PAM C4014-6, circuit RMP09 (BU/GN), harness side and the parking aid speaker C4015-1, circuit RMP09 (BU/GN), harness side. Is the resistance less than 5 ohms? Yes: GO to F7 . No: REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
7. F7 CHECK THE PARKING AID SPEAKER CIRCUITS FOR A SHORT TO VOLTAGE Disconnect: PAM C4014. Measure the voltage between the PAM C4014-2, circuit CMP09 (BN/BU), harness side and ground and between the PAM C4014-6, circuit RMP09 (BU/GN), harness side and ground. Is any voltage present? Yes: REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. No: GO to F8 .
8. F8 CHECK FOR CORRECT PAM OPERATION Disconnect the PAM connector. Check for: corrosion damaged pins pushed-out pins Connect the PAM connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes: INSTALL a new PAM. REFER to «PARKING AID MODULE (PAM)»(ref-344149-S14374169652009101600000) . CLEAR the DTCs. REPEAT the self-test. CARRY OUT the scan tool data link test. No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.

Pinpoint Test G: DTC C1748

Refer to SYSTEM WIRING DIAGRAMS - ESCAPE or SYSTEM WIRING DIAGRAMS - MARINER , Parking Aid for schematic and connector information.

Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Scheme 13

Scheme 14

Scheme 15

1. G1 CHECK FOR RECORDED DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND PAM SELF-TESTS Check for recorded PAM DTCs from the continuous and on-demand self-tests. Are any PAM DTCs recorded? Yes: For DTC C1748, GO to G2 . No: For all other DTCs, REFER to «DTC CHARTS»(ref-344149-S20847747172009101600000) .
2. G2 CHECK THE PARKING AID DISABLE SWITCH CIRCUIT FOR A SHORT TO GROUND Ignition OFF. Disconnect: PAM C4014. Measure the resistance between the PAM C4014-11, circuit CMP18 (GN/BN), harness side and ground. Is the resistance greater than 10,000 ohms? Yes: GO to G4 . No: GO to G3 .
3. G3 CHECK THE PARKING AID DISABLE SWITCH CIRCUIT FOR A SHORT TO GROUND WITH THE PARKING AID DISABLE SWITCH DISCONNECTED Disconnect: Parking Aid Disable Switch C2035. Measure the resistance between the parking aid disable switch C2035-6, circuit CMP18 (GN/BN), harness side and ground. Is the resistance greater than 10,000 ohms? Yes: INSTALL a new parking aid disable switch. REFER to «PARKING AID SWITCH»(ref-344149-S17808062882009101600000) . CLEAR the DTCs. REPEAT the self-test. No: REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
4. G4 CHECK THE PARKING AID DISABLE SWITCH CIRCUIT FOR A SHORT TO VOLTAGE Ignition OFF. Disconnect: PAM C4014. Ignition ON. Measure the voltage between the PAM C4014-11, circuit CMP18 (GN/BN), harness side and ground. Is any voltage present? Yes: GO to G5 . No: GO to G6 .
5. G5 CHECK THE PARKING AID DISABLE SWITCH CIRCUIT FOR A SHORT TO VOLTAGE WITH THE PARKING AID DISABLE SWITCH DISCONNECTED Disconnect: Parking Aid Disable Switch C2035. Measure the voltage between the PAM C4014-11, circuit CMP18 (GN/BN), harness side and ground. Is any voltage present? Yes: INSTALL a new parking aid disable switch. REFER to «PARKING AID SWITCH»(ref-344149-S17808062882009101600000) . CLEAR the DTCs. REPEAT the self-test. No: REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
6. G6 CHECK THE PARKING AID DISABLE SWITCH GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Parking Aid Disable Switch C2114. Measure the resistance between the parking aid disable switch C2035-2, circuit GD114 (BK/BU), harness side and ground. Is the resistance less than 5 ohms? Yes: GO to G7 . No: REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
7. G7 CHECK THE PARKING AID DISABLE SWITCH Install a new parking aid disable switch. Refer to «PARKING AID SWITCH»(ref-344149-S17808062882009101600000) . Test the system for normal operation. Is the concern still present? Yes: GO to G7 . No: The system is operating correctly at this time. The concern was caused by an inoperative parking aid disable switch.
8. G8 CHECK FOR CORRECT PAM OPERATION Disconnect the PAM connector. Check for: corrosion damaged pins pushed-out pins Connect the PAM connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes: INSTALL a new PAM. REFER to «PARKING AID MODULE (PAM)»(ref-344149-S14374169652009101600000) . CLEAR the DTCs. REPEAT the self-test. CARRY OUT the scan tool data link test. No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.

Pinpoint Test H: DTC B2373 or C1920

Refer to SYSTEM WIRING DIAGRAMS - ESCAPE or SYSTEM WIRING DIAGRAMS - MARINER , Parking Aid for schematic and connector information.

Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .

Scheme 16

Scheme 17

Scheme 18

Scheme 19

1. H1 CHECK FOR RECORDED DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND PAM SELF-TESTS Check for recorded PAM DTCs from the continuous and on-demand self-tests. Are any DTCs recorded? Yes: For DTC C1920 and B2373, GO to H2 . For all others, REFER to «DTC CHARTS»(ref-344149-S20847747172009101600000) . No: GO to «PINPOINT TEST A»(ref-344149-S18802932092009101600000) .
2. H2 CHECK THE PARKING AID DISABLE SWITCH LED INDICATOR CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Parking Aid Disable Switch C2035. Disconnect: PAM C4014. Measure the resistance between the PAM C4014-5, circuit CMP02 (GN/BU), harness side and the parking aid disable switch C2035-1, circuit CMP02 (GN/BU), harness side. Is the resistance less than 5 ohms? Yes: GO to H3 . No: REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
3. H3 CHECK THE PARKING AID DISABLE SWITCH LED INDICATOR CIRCUIT FOR A SHORT TO GROUND Measure the resistance between the PAM C4014-5, circuit CMP02 (GN/BU), harness side and ground. Is the resistance greater than 10,000 ohms? Yes: GO to H4 . No: REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
4. H4 CHECK THE PARKING AID DISABLE SWITCH LED INDICATOR CIRCUIT FOR A SHORT TO VOLTAGE Ignition ON. Measure the voltage between the PAM C4014-5, circuit CMP02 (GN/BU), harness side and ground. Is any voltage present? Yes: REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. No: GO to H5 .
5. H5 CHECK THE PARKING AID DISABLE SWITCH GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Negative Battery Cable. Measure the resistance between the parking aid disable switch C2035-5, circuit GD114 (BK/BU), harness side and ground. Is the resistance less than 5 ohms? Yes: GO to H6 . No: REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
6. H6 CHECK THE PARKING AID DISABLE SWITCH Install a new parking aid disable switch. Refer to «PARKING AID SWITCH»(ref-344149-S17808062882009101600000) . Test the system for normal operation. Is the concern still present? Yes: GO to H7 . No: The system is operating correctly at this time. The concern was caused by an inoperative parking aid disable switch.
7. H7 CHECK FOR CORRECT PAM OPERATION Disconnect the PAM connector. Check for: corrosion damaged pins pushed-out pins Connect the PAM connector and make sure it seats correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes: INSTALL a new PAM. REFER to «PARKING AID MODULE (PAM)»(ref-344149-S14374169652009101600000) . CLEAR the DTCs. REPEAT the self-test. CARRY OUT the scan tool data link test. No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.