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Parking Aid System: Diagnosis Ford Edge I

Collision/avoidance 7 illustrations ~4878 words

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) Wiring, terminals or connectors Parking aid module (PAM) Parking aid sensors Parking aid speaker
  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-292539) article, No Power To The Scan Tool, to diagnose no communication with 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-292539) article 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-292539) article. 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 «PARKING AID MODULE (PAM) DTC CHART»(ref-292593-S21330059122008080400000) . For all other DTCs, refer to «MULTIFUNCTION ELECTRONIC MODULES»(ref-292540) article.
  10. If no DTCs related to the concern are retrieved, go to «Symptom Chart»(ref-292593-S01903536202008080400000) .
PIDDescription
LRI_DISTLeft rear inner sensor distance to object
LRO_DISTLeft rear outer sensor distance to object
RRI_DISTRight rear inner sensor distance to object
RRO_DISTRight rear outer sensor distance to object
LRI_ATTENLeft rear inner sensor attenuation
LRO_ATTENLeft rear outer sensor attenuation
RRI_ATTENRight rear inner sensor attenuation
RRO_ATTENRight rear outer sensor attenuation
TRANSGRTransmission gear position

PARAMETER IDENTIFICATION (PID) CHART

DTC Charts

DTCDescriptionAction
B1299Power Supply Sensor Circuit Short to GroundGo to Pinpoint Test E .
B1342ECU is FaultedCLEAR the DTCs. REPEAT the PAM self-test. If DTC B1342 is retrieved again, INSTALL a new PAM. REFER to Parking Aid Module . CLEAR all DTCs. REPEAT the self-test.
B2477Module Configuration FailureThe PAM is not configurable. CLEAR the DTCs. REPEAT the PAM self-test. If DTC B2477 is retrieved again, INSTALL a new PAM. REFER to Parking Aid Module . CLEAR all DTCs. REPEAT the self-test.
C1699Left Rear Sensor Circuit Short to VbatGo to Pinpoint Test C .
C1700Left Rear Sensor Circuit Failure or BlockageGo to Pinpoint Test B .
C1701Left Rear Sensor Circuit FaultGo to Pinpoint Test D .
C1702Right Rear Sensor Circuit Short to VbatGo to Pinpoint Test C .
C1703Right Rear Sensor Circuit Failure or BlockageGo to Pinpoint Test B .
C1704Right Rear Sensor Circuit FaultGo to Pinpoint Test D .
C1705Left Rear Center Sensor Circuit Short to VbatGo to Pinpoint Test C .
C1706Left Rear Center Sensor Circuit FailureGo to Pinpoint Test B .
C1707Left Rear Center Sensor Circuit FaultGo to Pinpoint Test D .
C1708Right Rear Center Sensor Circuit Short to VbatGo to Pinpoint Test C .
C1709Right Rear Center Sensor Circuit FailureGo to Pinpoint Test B .
C1710Right Rear Center Sensor Circuit FaultGo to Pinpoint TestD .
C1742Rear Sounder Circuit FailureGo to Pinpoint Test F .
C1743Rear Sounder Circuit Short to VbatGo to Pinpoint Test F .
U0140Lost Communication With Body Control Module (GEM)Go to Pinpoint Test G .
U0155Lost Communication With Instrument Panel Cluster (IC) Control ModuleGo to Pinpoint Test H .
U2051One or More Calibration Files Missing/CorruptINSTALL a new PAM. REFER to Parking Aid Module . CLEAR all DTCs. REPEAT the self-test.

PARKING AID MODULE (PAM) DTC CHART

Symptom Chart

ConditionPossible SourcesAction
No communication with the parking aid module (PAM)Fuse Wiring, terminals or connectors PAMREFER to MODULE COMMUNICATIONS NETWORK article.
The parking aid is inoperative/does not operate correctlyParking aid sensors alignment PAM Rear bumper coverGo to Pinpoint Test A .
Continuous or intermittent tone when no obstacles or fault codes are present (certain obstacles may appear "stealthy" to the system, depending on geometric shape, size and material)Dirty or iced over parking aid sensor(s)CLEAN the rear bumper and sensors with high-pressure water.
Parking aid sensor bezel(s) or parking aid sensor(s) locked into the rear bumper incorrectly Parking aid sensors are not aligned correctlyREMOVE and correctly INSTALL the parking aid sensor(s) and or bezel(s) as necessary. REFER to Parking Aid Sensor .
Parking aid sensor(s) PAMCARRY OUT the azimuth system check and elevation system check. REFER to Azimuth System Check and Elevation System Check .
The audio control module (ACM) volume does not decrease when transmission is selected to reverse and reverse sensing system is enabled.Wiring, terminals or connectors PAMGo to Pinpoint Test I .

Symptom Chart

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

Normal Operation

The parking aid system is enabled when the ignition switch is in the RUN position and the REVERSE (R) gear is selected. The parking aid module (PAM) receives reverse gear input from the instrument cluster (IC) through the medium speed controller area network (MS-CAN). Voltage is supplied to the parking aid sensors from the PAM on circuit LMP07 (BU/WH). The PAM supplies ground to the parking aid sensors on circuit RMP07 (GN/WH). The PAM receives a signal from the parking aid sensors on circuits VMP14 (WH/OG), VMP15 (YE/GN), VMP16 (YE/GY) and VMP17 (YE/OG). The system can be disabled through the message center which is integral to the IC.

This pinpoint test is intended to diagnose the following

  1. Parking aid sensors alignment
  2. PAM
  3. Rear bumper cover

PINPOINT TEST A: THE PARKING AID IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

CAUTIONUse the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. A1 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 any PAM DTCs recorded? YES : REFER to DTC Charts in this service information. NO : Go to A2 .
  2. A2 CHECK THE PARKING AID SENSORS FOR CORRECT ALIGNMENT NOTE: If the vehicle was in a rear end collision, the parking aid sensors may not be aligned correctly. Check the bumper for correct alignment. Carry out the azimuth system check. Refer to «Azimuth System Check»(ref-292593-S30674158402008080400000) . Carry out the elevation system check. Refer to «Elevation System Check»(ref-292593-S37431001962008080400000) . Does the parking aid system pass both system checks? YES : Go to A3 . NO : REALIGN or INSTALL a new bumper cover. REFER to «BUMPERS»(ref-292550) article. If the vehicle was in a rear end collision, additional body work may be required to bring the parking aid sensors into correct alignment.
  3. A3 CHECK FOR CORRECT REVERSE GEAR INPUT Apply the parking brake. Key in ON position. Select REVERSE. Enter the following diagnostic mode on the diagnostic tool: PAM DataLogger Monitor the PAM TRANSGR PID. Does the PID indicate YES (transmission in reverse)? YES : Go to A4 . NO : INSTALL a new PAM. REFER to «Parking Aid Module»(ref-292593-S32173568642008080400000) . TEST the system for normal operation.
  4. A4 CHECK THE MESSAGE CENTER FOR PARKING AID DISABLE SWITCH OPERATION While observing the IC message center, disable and enable the parking aid system. Does the message center display PARK AID OFF when the parking aid system is disabled, and display PARK AID ON when the parking aid system is enabled? YES : Go to A5 . NO : REFER to «INSTRUMENT CLUSTER (IC), MESSAGE CENTER, AND WARNING CHIMES»(ref-292542) article to diagnose the message center.
  5. A5 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»(ref-292593-S32173568642008080400000) . 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.

Pinpoint Test B: DTCs C1700, C1703, C1706 And C1709 - Parking Aid Sensor Circuit Failure or Blockage

Refer to appropriate SYSTEM WIRING DIAGRAMS article, Parking Aid for schematic and connector information.

Normal Operation

Voltage is supplied to the parking aid sensors from the parking aid module (PAM) on circuit LMP07 (BU/WH). The PAM supplies ground to the parking aid sensors on circuit RMP07 (GN/WH). The PAM receives a signal from the parking aid sensors on circuits VMP14 (WH/OG), VMP15 (YE/GN), VMP16 (YE/GY) and VMP17 (YE/OG).

DTC DescriptionFault Trigger Conditions
C1700 - Left Rear Sensor Circuit Failure or BlockageA continuous and on-demand DTC that sets when any of the left rear parking aid sensor circuits are open or the sensor signal line is shorted to ground.
C1703 - Right Rear Sensor Circuit Failure or BlockageA continuous and on-demand DTC that sets when any of the right rear parking aid sensor circuits are open or the sensor signal line is shorted to ground.
C1706 - Left Rear Center Sensor Circuit FailureA continuous and on-demand DTC that sets when any of the left rear center parking aid sensor circuits are open or the sensor signal line is shorted to ground.
C1709 - Left Rear Center Sensor Circuit FailureA continuous and on-demand DTC that sets when any of the right rear center parking aid sensor circuits are open or the sensor signal line is shorted to ground.

This pinpoint test is intended to diagnose the following

  1. Wiring, terminals or connectors
  2. PAM
  3. Parking aid sensor(s)
  4. Parking aid bumper harness

PINPOINT TEST B: DTCs C1700, C1703, C1706 AND C1709 - PARKING AID SENSOR CIRCUIT FAILURE OR BLOCKAGE

CAUTIONUse 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 in this service information.
  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 Key in OFF position. Disconnect: Suspect Parking Aid Sensor C4009, C4010, C4011 or C4012 Disconnect: PAM C4014 Measure the resistance between the PAM C4014, harness side and the suspect parking aid sensor, harness side as follows: 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 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) Is the resistance 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-292593-S31517687492008080400000) . 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»(ref-292593-S32173568642008080400000) . 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: DTCs C1699, C1702, C1705 And C1708 - Sensor Circuit Short To Vbat

Refer to appropriate SYSTEM WIRING DIAGRAMS article, Parking Aid for schematic and connector information.

Normal Operation

Voltage is supplied to the parking aid sensors from the parking aid module (PAM) on circuit LMP07 (BU/WH). The PAM supplies ground to the parking aid sensors on circuit RMP07 (GN/WH). The PAM receives a signal from the parking aid sensors on circuits VMP14 (WH/OG), VMP15 (YE/GN), VMP16 (YE/GY) and VMP17 (YE/OG).

DTC DescriptionFault Trigger Conditions
C1699 - Left Rear Sensor Circuit Short to VbatA continuous and on-demand DTC that sets when the left rear parking aid sensor signal line is shorted to voltage.
C1702 - Right Rear Sensor Circuit Short to VbatA continuous and on-demand DTC that sets when the right rear parking aid sensor signal line is shorted to voltage.
C1705 - Left Rear Center Sensor Circuit Short to VbatA continuous and on-demand DTC that sets when the left rear center parking aid sensor signal line is shorted to voltage.
C1708 - Right Rear Center Sensor Circuit Short to VbatA continuous and on-demand DTC that sets when the right rear center parking aid sensor signal line is shorted to voltage.

This pinpoint test is intended to diagnose the following

  1. Wiring, terminals or connectors
  2. Parking aid sensor(s)
  3. Parking aid bumper harness
  4. PAM

PINPOINT TEST C: DTCs C1699, C1702, C1705 AND C1708 - SENSOR CIRCUIT SHORT TO VBAT

CAUTIONUse the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  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 in this service information.
  2. C2 CHECK THE BUMPER WIRING HARNESS Inspect the bumper wiring harness for opens, shorts, grounds, or corrosion. Is 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 Key in OFF position. Disconnect: Suspect Parking Aid Sensor C4009, C4010, C4011 or C4012 Disconnect: PAM C4014 Key in ON position. Measure the voltage between the suspect parking aid sensor, harness side and ground as follows: 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, 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-292593-S31517687492008080400000) . 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»(ref-292593-S32173568642008080400000) . 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: DTCs C1701, C1704, C1707 And C1710 - Sensor Circuit Fault

Normal Operation

Voltage is supplied to the parking aid sensors from the parking aid module (PAM) on circuit LMP07 (BU/WH). The PAM supplies ground to the parking aid sensors on circuit RMP07 (GN/WH). The PAM receives a signal from the parking aid sensors on circuits VMP14 (WH/OG), VMP15 (YE/GN), VMP16 (YE/GY) and VMP17 (YE/OG).

DTC DescriptionFault Trigger Conditions
C1701 - Left Rear Sensor Circuit FaultA continuous and on-demand DTC that sets when the left rear parking aid sensor has internally failed or has an incorrect attenuation time.
C1704 - Right Rear Sensor Circuit FaultA continuous and on-demand DTC that sets when the right rear parking aid sensor has internally failed or has an incorrect attenuation time.
C1707 - Left Rear Center Sensor Circuit FaultA continuous and on-demand DTC that sets when the left rear center parking aid sensor has internally failed or has an incorrect attenuation time.
C1710 - Right Rear Center Sensor Circuit FaultA continuous and on-demand DTC that sets when the right rear center parking aid sensor has internally failed or has an incorrect attenuation time.

This pinpoint test is intended to diagnose the following

  1. Dirty or obstructed parking aid sensor
  2. Parking aid sensor
  3. Parking aid bumper harness
  4. PAM

PINPOINT TEST D: DTCs C1701, C1704, C1707 AND C1710 - SENSOR CIRCUIT FAULT

  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 in this service information. 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-292593-S30674158402008080400000) . Carry out the elevation system check. Refer to «Elevation System Check»(ref-292593-S37431001962008080400000) . 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. Key in ON position. Enter the following diagnostic mode on the diagnostic tool: PAM DataLogger 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 with no object behind the vehicle. 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 PARKING AID SENSOR Install a known good sensor for the suspect parking aid sensor. Key in ON position. 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-292593-S31517687492008080400000) . 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»(ref-292593-S32173568642008080400000) . 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 - Power Supply Sensor Circuit Short To Ground

Refer to appropriate SYSTEM WIRING DIAGRAMS article, Parking Aid for schematic and connector information.

Normal Operation

Voltage is supplied to the parking aid sensors from the parking aid module (PAM) on circuit LMP07 (BU/WH). The PAM supplies ground to the parking aid sensors on circuit RMP07 (GN/WH).

DTC B1299 is a continuous and on-demand DTC that sets when the sensor power supply circuit is shorted to ground or to circuit RMP07 (GN/WH).

This pinpoint test is intended to diagnose the following

  1. Wiring, terminals or connectors
  2. Parking aid sensor(s)
  3. Parking aid bumper harness
  4. PAM

PINPOINT TEST E: DTC B1299 - POWER SUPPLY SENSOR CIRCUIT SHORT TO GROUND

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

Scheme 3

Scheme 3
Scheme 3

Scheme 4

Scheme 4
Scheme 4
  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 Key in OFF position. Disconnect: Parking Aid Sensor C4009 Key in ON position. 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-292593-S31517687492008080400000) . CLEAR the DTCs. REPEAT the self-test.
  3. E3 CHECK THE RH OUTER SENSOR FOR AN INTERNAL SHORT Key in OFF position. Disconnect: Parking Aid Sensor C4011 Key in ON position. 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. CONNECT the parking aid sensors. REFER to «Parking Aid Sensor»(ref-292593-S31517687492008080400000) . CLEAR the DTCs. REPEAT the self-test.
  4. E4 CHECK THE LH INNER SENSOR FOR AN INTERNAL SHORT Key in OFF position. Disconnect: Parking Aid Sensor C4010 Key in ON position. 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. CONNECT the parking aid sensors. REFER to «Parking Aid Sensor»(ref-292593-S31517687492008080400000) . CLEAR the DTCs. REPEAT the self-test.
  5. E5 CHECK THE RH INNER SENSOR FOR AN INTERNAL SHORT Key in OFF position. Disconnect: Parking Aid Sensor C4012 Key in ON position. Clear the DTCs. Repeat the on-demand self-test. Is DTC B1299 still present? YES : CONNECT the parking aid sensors. Go to E6 . NO : INSTALL a new RH inner parking aid sensor. CONNECT the parking aid sensors. REFER to «Parking Aid Sensor»(ref-292593-S31517687492008080400000) . CLEAR the DTCs. REPEAT the self-test.
  6. E6 CHECK CIRCUIT LMP07 (BU/WH) FOR A SHORT TO GROUND Key in OFF position. 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) Key in OFF position. 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»(ref-292593-S32173568642008080400000) . 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 And C1743 - Rear Sounder Circuit Short To Voltage & Rear Sounder Circuit Failure

Refer to appropriate SYSTEM WIRING DIAGRAMS article, Parking Aid for schematic and connector information.

Normal Operation

A 750 Hz variable warning tone is generated from the parking aid speaker. The parking aid module (PAM) increases the speaker warning tone rate as the vehicle gets closer to an obstacle. Circuits CMP09 (BN/BU) and RMP09 (BU/GN) provide the connection between the PAM and the speaker.

DTC C1742 is a continuous and on-demand DTC that sets when the sounder circuit is open or shorted to ground.

DTC C1743 is a continuous and on-demand DTC that sets when the sounder circuit is shorted to voltage.

This pinpoint test is intended to diagnose the following

  1. Wiring, terminals or connectors
  2. PAM
  3. Parking aid speaker

PINPOINT TEST F: DTC C1742 - REAR SOUNDER CIRCUIT FAILURE AND DTC C1743 - REAR SOUNDER CIRCUIT SHORT TO VOLTAGE

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

Scheme 5

Scheme 5
Scheme 5

Scheme 6

Scheme 6
Scheme 6

Scheme 7

Scheme 7
Scheme 7

Scheme 8

Scheme 8
Scheme 8
  1. F1 RETRIEVE THE DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND SELF-TESTS Key in ON position. Retrieve the PAM DTCs from the continuous and on-demand self-tests. Is DTC C1742 or C1743 present? YES : Go to F2 . NO : For all other DTCs, REFER to DTC Charts in this service information.
  2. F2 MEASURE THE PARKING AID SPEAKER RESISTANCE Disconnect: Parking Aid Speaker C3268 Measure the resistance between the parking aid speaker pin 1, component side and the 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 Speaker»(ref-292593-S05494206372008080400000) . CLEAR the DTCs. REPEAT the self-test.
  3. F3 CHECK CIRCUIT CMP09 (BN/BU) FOR A SHORT TO GROUND Connect: Parking Aid Speaker C3268 Disconnect: PAM C4014 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 : Go to F5 . NO : Go to F4 .
  4. F4 CHECK CIRCUIT CMP09 (BN/BU) FOR A SHORT TO GROUND WITH THE PARKING AID SPEAKER DISCONNECTED Disconnect: Parking Aid Speaker C3268 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 (BU/GN). CLEAR the DTCs. REPEAT the self-test. NO : REPAIR circuit CMP09 (BN/BU). CLEAR the DTCs. REPEAT the self-test.
  5. F5 CHECK CIRCUIT CMP09 (BN/BU) FOR AN OPEN Disconnect: Parking Aid Speaker C3268 Measure the resistance between the PAM C4014-2, circuit CMP09 (BN/BU), harness side and the parking aid speaker C3268-2, 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 CIRCUIT RMP09 (BU/GN) FOR AN OPEN Measure the resistance between the PAM C4014-6, circuit RMP09 (BU/GN), harness side and the parking aid speaker C3268-1, circuit RMP09 (BU/GN), harness side. Is the resistance less than 5 ohms? YES : Go to F8 . NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
  7. F7 CHECK THE PARKING AID SPEAKER CIRCUITRY FOR SHORTS TO VOLTAGE Key in ON position. 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 in question. 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 determine if the concern is still present. Is the concern still present? YES : INSTALL a new PAM. The PAM and speaker are serviced as one assembly. REFER to «Parking Aid Module»(ref-292593-S32173568642008080400000) . 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 U0140 - Ignition Switch Position Missing

Normal Operation

The parking aid module (PAM) receives the ignition switch state from the smart junction box (SJB) as a network message.

DTC U0140 is a continuous and on-demand DTC that sets in the PAM when ignition switch state messages are not received from the SJB.

This pinpoint test is intended to diagnose the following

  1. SJB
  2. Networked data fault

PINPOINT TEST G: DTC U0140 - IGNITION SWITCH POSITION MISSING

  1. G1 CONFIRM THE DTC WILL SET IN CONTINUOUS MEMORY Key in ON position. Enter the following diagnostic mode on the diagnostic tool: PAM CMDTCs Clear the DTCs. Operate the system and determine if the concern is still present. Retrieve continuous PAM DTCs. Is DTC U0140 present? YES : Go to G2 . NO : System is operating normally at this time.
  2. G2 CHECK THE IGNITION SWITCH VOLTAGE PID Enter the following diagnostic mode on the diagnostic tool: PAM DataLogger Check the PAM ignition switch voltage PID (IGN_V). Does the PID match the ignition switch position? YES : REFER to «STEERING COLUMN SWITCHES»(ref-292544) article. NO : Go to G3 .
  3. G3 CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and determine if the concern is still present. Is the concern still present? YES : INSTALL a new SJB. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-292540) article. 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 H: DTC U0155 - PRNDL Missing

Normal Operation

The parking aid module (PAM) receives the transmission selector (PRNDL) state from the instrument cluster (IC) as a gateway message from the PCM.

DTC U0155 is a continuous and on-demand DTC that sets in the PAM when PRNDL messages are not received from the smart junction box (SJB).

This pinpoint test is intended to diagnose the following

  1. IC
  2. Networked data fault

PINPOINT TEST H: DTC U0155 - PRNDL MISSING

  1. H1 CONFIRM THE DTC WILL SET IN CONTINUOUS MEMORY Key in ON position. Enter the following diagnostic mode on the diagnostic tool: PAM CMDTCs Clear the DTCs. Operate the system and determine if the concern is still present. Retrieve continuous PAM DTCs. Is DTC U0155 present? YES : Go to H2 . NO : System is operating normally at this time.
  2. H2 VERIFY THE IC PRNDL DISPLAY FUNCTIONS CORRECTLY Monitor the IC PRNDL display while moving the gearshift lever through the range of positions. Does the PRNDL match all range positions? YES : Go to H3 . NO : REFER to «INSTRUMENT CLUSTER (IC), MESSAGE CENTER, AND WARNING CHIMES»(ref-292542) article to diagnose the PRNDL.
  3. H3 CHECK FOR CORRECT IC OPERATION Disconnect the IC connector. Check for: corrosion damaged pins pushed-out pins Connect the IC 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 IC. REFER to «INSTRUMENT CLUSTER (IC), MESSAGE CENTER, AND WARNING CHIMES»(ref-292542) article. 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 I: The Volume Cutback Is Inoperative

Normal Operation

With the ignition switch in the RUN position and the gear selector in REVERSE (R), the parking aid system calculates the distance to an object by the use of a radar sensor. A 750 Hz variable warning tone is generated by the parking aid sounder. A volume cutback request message is sent to the audio control module (ACM) from the parking aid module (PAM) over the medium speed controller area network (MS-CAN) to decrease the volume of the audio system, so that the parking aid sounder may be clearly heard.

This pinpoint test is intended to diagnose the following

  1. Wiring, terminals or connectors
  2. PAM
  3. ACM

PINPOINT TEST I: THE VOLUME CUTBACK IS INOPERATIVE

  1. I1 VERIFY THE PAM COMMUNICATES WITH THE INSTRUMENT CLUSTER (IC) MESSAGE CENTER DISPLAY Apply the parking brake. Key in ON position. Apply the brake pedal and place the gear selector in REVERSE (R). Disable/enable the parking aid system by pressing the reset button on the message center switch. Can the PAM be disabled/enabled in the IC message center display? YES : Go to I3 . NO : Go to I2 .
  2. I2 VERIFY THE CORRECT PAM IS INSTALLED Check to make sure the correct PAM is installed. Has the PAM been replaced prior? YES : VERIFY the correct PAM is installed. If correct, go to I3 . NO : INSTALL the correct PAM. REFER to «Parking Aid Module»(ref-292593-S32173568642008080400000) . TEST the system for normal operation.
  3. I3 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»(ref-292593-S32173568642008080400000) . TEST the system for normal operation. NO : The system is operating correctly at this time.

Scheme 9

Scheme 9: Azimuth System Check
Scheme 9: Azimuth System Check

Note. The object used in this system check can be fabricated from 9 cm O.D. (3 in I.D) plastic pipe 100 cm (39 in) in length (available as PVC pipe, or similar from a hardware or plumbing supply).

Note. The following system check should be carried out with the vehicle on a level surface. The specified object locations are approximate, not absolute

Note. The parking aid system will default to on when the ignition key is cycled from OFF to ON.

Note. The scan tool may be used to monitor distance PIDs. The distance PIDs read between 0 and 255 cm (0 and 8 ft) on a correctly functioning system.

  1. Turn the ignition to the ON position, engine off.
  2. Set the parking brake on.
  3. Place the gear shift in REVERSE (R).
  4. Verify that the parking aid system detects the specified object when placed within the 5 specified locations (P1, P2, P3, P4, P5). The pipe should be inside of these locations. The speaker should beep slowly when objects are detected on the outer edges of the detection zone, and increase as the object is moved closer to the vehicle. When the object is within 46 cm (18 in) of the rear bumper, the sounder should be on continuously.

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