Pinpoint Test A : The Powertrain Control Module (Pcm) Does Not Respond To The Scan Tool

WARNING: This page is about a different car, the 2018 Ford Focus. 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.

A1 VERIFY WHETHER OTHER HS-CAN (HIGH-SPEED CONTROLLER AREA NETWORK) MODULES PASS THE NETWORK TEST

Using a scan tool, perform the network test.

Is the text "pass" or a DTC listed next to any of the following modules (if equipped): AWD module (RS), APIM, ABS module, BCM, DACMC (RS), GFM2 (RS), HCM (if equipped), IPMA (if equipped), ICM (ST, RS), OCSM, Parking Aid Module (PAM) (if equipped), PSCM, RCM, SASM, or TCM (if equipped)?

Yes	If "pass" or a DTC was listed next to the Powertrain Control Module (PCM), a network fault is not currently present. If "pass" or a DTC was listed next to one or more modules other than the PCM, GO to A2

No	No modules are currently communicating on the HS-CAN. GO to Pinpoint Test AB

A2 POWERTRAIN CONTROL/EMISSIONS DIAGNOSIS PINPOINT TEST QA VERIFICATION CHECK
- Verify that Powertrain Control/Emissions Diagnosis pinpoint test QA has been performed.
Has the VREF test been performed?

Yes GO to A3

No Refer to ENGINE CONTROLS - INTRODUCTION (EXCEPT DIESEL & HYBRID)

A3 CHECK THE HS-CAN (HIGH-SPEED CONTROLLER AREA NETWORK) TERMINATION RESISTANCE

Ignition OFF.

Measure:

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

Is the resistance between 54 and 66 ohms?

Yes

GO to A5

GO to A4

A4 CHECK THE HS-CAN (HIGH-SPEED CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE PCM (POWERTRAIN CONTROL MODULE) AND THE DLC (DATA LINK CONNECTOR) FOR AN OPEN

Disconnect: PCM C175B (2.0L GDI), C1381B (2.0L GTDI), C1915B (1.0L GTDI) or C1926B (2.3L GTDI).

Measure:

2.0L GDI

Positive Lead	Measurement / Action	Negative Lead
C175B-54	Courtesy of FORD MOTOR COMPANY	C251-6
C175B-41	Courtesy of FORD MOTOR COMPANY	C251-14

2.0L GTDI

Positive Lead	Measurement / Action	Negative Lead
C1381B-69	Courtesy of FORD MOTOR COMPANY	C251-6
C1381B-68	Courtesy of FORD MOTOR COMPANY	C251-14

1.0L GTDI

Positive Lead	Measurement / Action	Negative Lead
C1915B-69	Courtesy of FORD MOTOR COMPANY	C251-6
C1915B-68	Courtesy of FORD MOTOR COMPANY	C251-14

2.3L GTDI

Positive Lead	Measurement / Action	Negative Lead
C1926B-69	Courtesy of FORD MOTOR COMPANY	C251-6
C1926B-68	Courtesy of FORD MOTOR COMPANY	C251-14

Are the resistances less than 3 ohms?

Yes

GO to A5

No	REPAIR the circuit in question.

A5 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the PCM connectors and related in-line connectors.

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 PCM connectors and related in-line connectors. Make sure they seat and latch 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 PCM 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.