Pinpoint Test G: The Instrument Panel Cluster (IPC) Does Not Respond To The Diagnostic Scan Tool

WARNING: This page is about a different car, the 2022 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

Refer to MODULE COMMUNICATIONS NETWORK for schematic and connector information. Refer to INSTRUMENT CLUSTER for schematic and connector information.
Normal Operation and Fault Conditions

The IPC communicates with the diagnostic scan tool through the HS-CAN3.

Possible Sources
- Fuse
- Wiring, terminals and connector
- IPC
Visual Inspection and Pre-checks
- Verify BCM fuse 13 (7.5A) is OK.

G1 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) TERMINATION RESISTANCE

Ignition OFF.

Disconnect negative battery cable.

Disconnect the diagnostic scan tool cable from the DLC.

Disconnect GWM C2431.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2431-16	Courtesy of FORD MOTOR COMPANY	C2431-15

Is the resistance between 108 and 132 ohms?

Yes

GO to G3

GO to G2

G2 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE IPC (INSTRUMENT PANEL CLUSTER) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect IPC C220.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C220-25	Courtesy of FORD MOTOR COMPANY	C2431-16
C220-26	Courtesy of FORD MOTOR COMPANY	C2431-15

Are the resistances less than 3 ohms?

Yes

GO to G5

No	REPAIR the circuit in question.

G3 CHECK THE IPC (INSTRUMENT PANEL CLUSTER) VOLTAGE SUPPLY CIRCUIT

Disconnect: IPC C220.

Connect negative battery cable.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C220-21	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to G4

No	VERIFY BCM fuse 13 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION to identify the possible causes of the circuit short.

G4 CHECK THE IPC (INSTRUMENT PANEL CLUSTER) GROUND CIRCUIT

Ignition OFF.

Disconnect negative battery cable.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C220-5	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance less than 3 ohms?

Yes	CONNECT negative battery cable. GO to G5

No	REPAIR the circuit.

G5 CHECK FOR CORRECT IPC (INSTRUMENT PANEL CLUSTER) OPERATION

Ignition OFF.

Disconnect and inspect the IPC connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the IPC connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB, General Service Bulletin (GSB), SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new IPC. Refer to the INSTRUMENT PANEL CLUSTER (IPC) .

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.