Pinpoint Test F : P2535 (With Push Button Start)

WARNING: This page is about a different car, the 2018 Ford F-350 Super Duty and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

F1 CHECK THE CRANK DETECT CIRCUIT FOR A SHORT TO VOLTAGE WITH THE PCM (POWERTRAIN CONTROL MODULE) DISCONNECTED

Ignition OFF.

Disconnect PCM C175B .

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C175B-42	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes

GO to F2

GO to F4

F2 CHECK THE CRANK DETECT CIRCUIT FOR A SHORT TO VOLTAGE WITH THE IGNITION SWITCH DISCONNECTED

Ignition OFF.

Disconnect Ignition switch - Push Button Start C2195 .

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C175B-42	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes

GO to F3

No	INSTALL a new ignition switch - push button start. REFER to: Ignition Switch - Vehicles With: Keyless Vehicle System .

F3 CHECK THE CRANK DETECT CIRCUIT FOR A SHORT TO VOLTAGE WITH THE BCM (BODY CONTROL MODULE) DISCONNECTED

Ignition OFF.

Disconnect BCM C2280B .

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C175B-42	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit.

No	INSTALL a new BCM. REFER to: Body Control Module (BCM) .

F4 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PCM connectors.

Repair:
- corrosion (install new connectors 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. 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 the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new PCM. REFER to: Powertrain Control Module (PCM) .

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.