Pinpoint Test I : The APIM (Sync Module) Does Not Respond To The Diagnostic Scan Tool

WARNING: This page is about a different car, the 2018 Ford Fiesta. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings.

I1 CHECK THE APIM (SYNC MODULE) VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect APIM C2383.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2383-1	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to I2

No	VERIFY the CJB fuse 10 (15A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to OEM Electrical Wiring Diagram Introduction to identify the possible causes of the circuit short.

I2 CHECK THE APIM (SYNC MODULE) GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect negative battery cable.

Measure:

With Touchscreen

Positive Lead	Measurement / Action	Negative Lead
C2383-37	Courtesy of FORD MOTOR COMPANY	Ground

Without Touchscreen

Positive Lead	Measurement / Action	Negative Lead
C2383-37	Courtesy of FORD MOTOR COMPANY	Ground
C2383-38	Courtesy of FORD MOTOR COMPANY	Ground

Are the resistances less than 3 ohms?

Yes

GO to I3

No	REPAIR the circuit in question.

I3 CHECK THE HS-CAN (HIGH-SPEED CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE APIM (SYNC MODULE) AND THE DLC (DATA LINK CONNECTOR) FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2383-53	Courtesy of FORD MOTOR COMPANY	C251-6
C2383-54	Courtesy of FORD MOTOR COMPANY	C251-14

Are the resistances less than 3 ohms?

Yes

GO to I4

No	REPAIR the circuit in question. CONNECT the negative battery cable.

I4 CHECK THE INFOTAINMENT CONTROLLER AREA NETWORK (I-CAN) CIRCUITS BETWEEN THE APIM (SYNC MODULE) AND THE IPC (INSTRUMENT PANEL CLUSTER) FOR AN OPEN

Disconnect IPC C220B.

Measure:

With Touchscreen

Positive Lead	Measurement / Action	Negative Lead
C2383-19	Courtesy of FORD MOTOR COMPANY	C220B-10
C2383-20	Courtesy of FORD MOTOR COMPANY	C220B-9

Without Touchscreen

Positive Lead	Measurement / Action	Negative Lead
C2383-16	Courtesy of FORD MOTOR COMPANY	C220B-10
C2383-17	Courtesy of FORD MOTOR COMPANY	C220B-9

Are the resistances less than 3 ohms?

Yes	If equipped with touchscreen, GO to I5If not equipped with touchscreen, CONNECT the negative battery cable and GO to I6

No	REPAIR the circuit in question. CONNECT the negative battery cable.

I5 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE APIM (SYNC MODULE) AND THE DLC (DATA LINK CONNECTOR) FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2383-16	Courtesy of FORD MOTOR COMPANY	C251-3
C2383-17	Courtesy of FORD MOTOR COMPANY	C251-11

Are the resistances less than 3 ohms?

Yes	CONNECT the negative battery cable. GO to I6

No	REPAIR the circuit in question. CONNECT the negative battery cable.

I6 CHECK FOR CORRECT APIM (SYNC MODULE) OPERATION

Ignition OFF.

Connect IPC C220B.

Disconnect and inspect the APIM 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 APIM 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 Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, Refer to APIM Guided Routine Testing .

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.