B-MAX 2012 – Parking Aid – Parking AidVehicles With: Front and Rear Parking Aid – Visual Inspection Chart

Parking Aid - Parking Aid—Vehicles With: Front and Rear Parking AidB-MAX 2012.75 (01/2012-)
Diagnosis and Testing

General Equipment
Ford diagnostic equipment

Refer to Wiring Diagram Section 131-1 for schematic and connector information.

Inspection and Verification

  1. Verify the customer concern.

  1. Visually inspect for obvious signs of electrical damage.

Visual Inspection Chart

Electrical
  • Fuse(s)
  • Relay(s)
  • Wiring harness
  • Electrical connector(s)
  • Front parking aid sensor(s)
  • Rear parking aid sensor(s)
  • Rear parking aid camera
  • Instrument panel console switch assembly
  • Central junction box (CJB)
  • Front control/display interface module (FCDIM)
  • Accessory protocol interface module (APIM)
  • Body control module (BCM)

  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

  1. If the cause is not visually evident, verify the symptom and refer to the Self-Diagnostic Mode.

Self-Diagnostic Mode

  1. NOTE: Self-Diagnostic Mode is always carried out when the parking aid system is activated.

    To enter the parking aid module Self-Diagnostic Mode, turn the ignition key to position 0 and make sure that the vehicle is in neutral gear.

  1. Make sure that there are no obstacles within 2 meters of the front or rear of the vehicle.

  1. Turn the ignition key to position II and select reverse gear.

  1. If there is a concern, the Self-Diagnostic Mode will be indicated by an audible tone for 3 seconds from the parking aid system, and is paused for 1 second, otherwise the system proceeds with normal operation.

  1. If a concern is detected, the 3 seconds prelude tone will be followed by a tone sequence indicationg the highest priority error. After a 1 second delay, the concern is identified with a 1 to 8 beep tone.

  1. To exit the Self-Diagnostic Mode, select neutral gear, turn the ignition key to position 0.

  1. Carry out the Self-Daignostic Mode again to confirm that there are no further errors present.

Audible Tone Sequence From Rear System

Audible Tone Sequence From Rear SystemDescriptionAction
ON for 3 seconds, pause for 1 secondOpening sequence for concern diagnostics-
3 second prelude tone + 1 beep toneRear left-hand outer sensor concernREFER to the Component Test in this procedure.
3 second prelude tone + 2 beep toneRear left-hand inner sensor concernREFER to the Component Test in this procedure.
3 second prelude tone + 3 beep toneRear right-hand inner sensor concernREFER to the Component Test in this procedure.
3 second prelude tone + 4 beep toneRear right-hand outer sensor concernREFER to the Component Test in this procedure.
3 second prelude tone + 5 beep tone from rear systemECU errorsREFER to the Ford diagnostic equipment
3 second prelude tone + 6 beep tone from rear systemCommon sensor VBatt circuitREFER to the Wiring Diagrams and CHECK the VBatt circuit(s)
3 second prelude tone + 7 beep tone from rear systemAll rear sensorsREFER to the Wiring Diagrams and CHECK S401 and S402 and associated circuit(s)

Audible Tone Sequence From Front System

Audible Tone Sequence From Front SystemDescriptionAction
ON for 3 seconds, pause for 1 secondOpening sequence for concern diagnostics-
3 second prelude tone + 1 beep toneFront left-hand outer sensor concernREFER to the Component Test in this procedure.
3 second prelude tone + 2 beep toneFront left-hand inner sensor concernREFER to the Component Test in this procedure.
3 second prelude tone + 3 beep toneFront right-hand inner sensor concernREFER to the Component Test in this procedure.
3 second prelude tone + 4 beep toneFront right-hand outer sensor concernREFER to the Component Test in this procedure.
3 second prelude tone + 5 beep tone from front systemSwitch failureREFER to the Ford diagnostic equipment
3 second prelude tone + 6 beep tone from front systemLED indicator failureREFER to the Ford diagnostic equipment
3 second prelude tone + 7 beep tone from front systemAll front sensorsREFER to the Wiring Diagrams and CHECK S131 and S132 and associated circuit(s)

Component Tests

Parking Aid Sensor Wiring Harness

NOTE: Refer to the Wiring Diagram, Section 131-1 for Schematic and Connector information.

NOTE: Check the parking aid wiring harness for short to ground, short to battery or damage.

  1. Test the parking aid sensor wiring harness using the following table as a guide to meter lead placement as well as expected values.

Rear Left-Hand Outer Parking Aid Sensor

Rear Left-Hand Outer Parking Aid Sensor C4009BCM C2280GExpected ValueAction
Pin 1Pin 2Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation
Pin 2Pin 17Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation
Pin 3Pin 12Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation

Rear Left-Hand Inner Parking Aid Sensor

Rear Left-Hand Inner Parking Aid Sensor C4010BCM C2280GExpected ValueAction
Pin 1Pin 2Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation
Pin 2Pin 16Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation
Pin 3Pin 12Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation

Rear Right-Hand Inner Parking Aid Sensor

Rear Right-Hand Inner Parking Aid Sensor C4012BCM C2280GExpected ValueAction
Pin 1Pin 2Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation
Pin 2Pin 15Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation
Pin 3Pin 12Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation

Rear Right-Hand Outer Parking Aid Sensor

Rear Right-Hand Outer Parking Aid Sensor C4011BCM C2280GExpected ValueAction
Pin 1Pin 2Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation
Pin 2Pin 15Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation
Pin 3Pin 12Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation

  1. Test the parking aid system using the following table as a guide to meter lead placement as well as expected values.

Front Left-Hand Outer Parking Aid Sensor

Rear Left-Hand Outer Parking Aid Sensor C1428BCM C228DExpected ValueAction
Pin 1Pin 6Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation
Pin 2Pin 23Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation
Pin 3Pin 11Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation

Front Left-Hand Inner Parking Aid Sensor

Rear Left-Hand Inner Parking Aid Sensor C1429BCM C2280DExpected ValueAction
Pin 1Pin 6Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation
Pin 2Pin 21Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation
Pin 3Pin 11Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation

Front Right-Hand Inner Parking Aid Sensor

Rear Right-Hand Inner Parking Aid Sensor C1430BCM C2280DExpected ValueAction
Pin 1Pin 6Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation
Pin 2Pin 22Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation
Pin 3Pin 11Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation

Front Right-Hand Outer Parking Aid Sensor

Rear Right-Hand Outer Parking Aid Sensor C1431BCM C2280DExpected ValueAction
Pin 1Pin 6Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation
Pin 2Pin 20Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation
Pin 3Pin 11Less than 5 ohmsIf the resistance is greater than 5 ohms, CHECK and REPAIR the circuit. If the circuit is OK, INSTALL a new parking aid sensor. TEST the system for normal operation

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