PINPOINT TEST A : The PCM Does Not Respond To The Scan Tool Normal Operation

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. REFER to Battery, Mounting and Cables

A1 VERIFY WHETHER OTHER HS-CAN MODULES PASS THE NETWORK TEST

Using a scan tool, perform a network test.

Is the text "pass" or a DTC listed next to any of the following modules (if equipped): APIM, ATCM, ABS module, BCM, C-CM, FLM, HUD module, IPC, OCSM, PAM, PSCM, PCM, RCM or SCCM ?

Yes	If "pass" or a DTC was listed next to the 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 AD .

A2 ENGINE CONTROLS PINPOINT TEST QA VERIFICATION CHECK

Verify that Engine Controls article pinpoint test QA has been carried out.

Has pinpoint test QA been carried out?

Yes	GO to A3.
No	REFER to PINPOINT TEST QA: UNABLE TO ACTIVATE SELF-TEST/NETWORK COMMUNICATION ERROR to diagnose no communication with the PCM.

A3 CHECK THE HS-CAN TERMINATION RESISTANCE

Ignition OFF.

Disconnect: negative battery cable.

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	CONNECT the negative battery cable. GO to A6.
No	GO to A4.

A4 CHECK THE HS-CAN CIRCUITS BETWEEN THE PCM AND THE DLC FOR AN OPEN

Disconnect: PCM C175B (3.5L TiVCT, 3.7L TiVCT), C1551B (3.5L GTDI) or C1381B (2.0L).

3.5L or 3.7L TiVCT engine, measure:

Positive Lead	Measurement / Action	Negative Lead
C175B-59	Courtesy of FORD MOTOR COMPANY	C251-6
C175B-58	Courtesy of FORD MOTOR COMPANY	C251-14

3.5L GTDI engine, measure:

Positive Lead	Measurement / Action	Negative Lead
C1551B-69	Courtesy of FORD MOTOR COMPANY	C251-6
C1551B-68	Courtesy of FORD MOTOR COMPANY	C251-14

2.0L engine, measure:

Positive Lead	Measurement / Action	Negative Lead
C1381B-54	Courtesy of FORD MOTOR COMPANY	C251-6
C1381B-41	Courtesy of FORD MOTOR COMPANY	C251-14

Are the resistances less than 3 ohms?

Yes	GO to A5.
No	REPAIR the circuit in question. CONNECT the negative battery cable.

A5 CHECK THE HS-CAN CIRCUITS FOR BEING SHORTED TOGETHER

Disconnect: BCM C2280F .

Measure:

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

Is the resistance less that 10, 000 ohms?

Yes	REPAIR the circuits in question.
No	GO to A6.

A6 CHECK FOR CORRECT PCM OPERATION

Ignition OFF.

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

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

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

Operate the system and verify the concern is still present

Is the concern still present?

Yes	CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new PCM. REFER to Electronic Engine Controls - 2.0L GTDI , REFER to Electronic Engine Controls - 3.5L Ti-VCT, 3.7L Ti-VCT , or REFER to Electronic Engine Controls - 3.5L GTDI .
No	The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.