Pinpoint Test A: The IPC Is Inoperative

NOTE: 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 .

A1 RETRIEVE THE RECORDED DTCs FROM THE CONTINUOUS IPC SELF-TEST
- Check for recorded IPC DTCs from the continuous self-test.
- Is DTC U300A:62 recorded?
- Yes: Go To PINPOINT TEST BE .
- No: GO to A2 .
A2 CHECK THE IPC B+ VOLTAGE SUPPLY
- Ignition OFF.
- Disconnect: IPC C220.
- Measure the voltage between the IPC C220-19, circuit SBP26 (YE/RD), harness side and ground.
  
  Fig 1: Measuring Voltage Between IPC C220-19, Circuit SBP26 (YE/RD), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
- Yes: GO to A3 .
- No: VERIFY SJB fuse 26 (10A) is OK. If OK, REPAIR the circuit for an open. If not OK, REFER to the SYSTEM WIRING DIAGRAMS to identify the possible causes of the circuit short. TEST the system for normal operation.
A3 CHECK THE IPC GROUND CIRCUIT GD114 (BK/BU) FOR AN OPEN
- Ignition OFF.
- Disconnect: Negative Battery Cable.
- Measure the resistance between the IPC C220-9, circuit GD114 (BK/BU), harness side and ground.
  
  Fig 2: Measuring Resistance Between IPC C220-9, Circuit GD114 (BK/BU), Harness Side And Ground
  Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes: GO to A4 .
- No: REPAIR the circuit. TEST the system for normal operation.
A4 CHECK FOR CORRECT IPC OPERATION
- Disconnect the IPC connector.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect the IPC 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 IPC . REFER to INSTRUMENT PANEL CLUSTER (IPC) . 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.