Pinpoint Test A : P0532, P0533

WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

A1 COMPARE THE PCM (POWERTRAIN CONTROL MODULE) PRESSURE SENSOR (ACP_PRESS) PID (PARAMETER IDENTIFICATION) WITH THE MANIFOLD GAUGE SET READINGS
- Allow the A/C system to stabilize to the outside ambient temperature.
- Ignition ON.
- Using a diagnostic scan tool, view PCM Parameter Identifications (PIDs).
- With the manifold gauge set connected, compare the pressure readings of the manifold gauge set and the PCM ACP_PRESS PID.
Are the pressure values of the manifold gauge set and the ACP_PRESS PCMPID within +/- 103 kPa (15 psi)?

Yes IGNORE the Diagnostic Trouble Codes (DTCs). REFER to the Symptom Chart(s) in this information.

No GO to A2

A2 CHECK THE A/C (AIR CONDITIONING) PRESSURE SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect PCM, 6.7L Power Stroke Diesel C1232B, 6.2L V8 or 6.8L Triton-30V - V10 C175B.

Disconnect A/C pressure transducer C1260.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
Refer to C1260-1	Courtesy of FORD MOTOR COMPANY	Ground
Refer to C1260-2	Courtesy of FORD MOTOR COMPANY	Ground
Refer to C1260-3	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage present?

Yes	REPAIR the circuit.

GO to A3

A3 CHECK THE A/C (AIR CONDITIONING) PRESSURE SENSOR CIRCUITS FOR A SHORT TO GROUND

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
Refer to C1260-1	Courtesy of FORD MOTOR COMPANY	Ground
Refer to C1260-2	Courtesy of FORD MOTOR COMPANY	Ground
Refer to C1260-3	Courtesy of FORD MOTOR COMPANY	Ground

Are the resistances greater than 10, 000 ohms?

Yes

GO to A4

No	REPAIR the circuit.

A4 CHECK THE A/C (AIR CONDITIONING) PRESSURE SENSOR CIRCUITS FOR AN OPEN

Measure:

6.7L Power Stroke Diesel

Positive Lead	Measurement / Action	Negative Lead
Refer to C1260-1	Courtesy of FORD MOTOR COMPANY	Refer to C1232B-44
Refer to C1260-2	Courtesy of FORD MOTOR COMPANY	Refer to C1232B-31
Refer to C1260-3	Courtesy of FORD MOTOR COMPANY	Refer to C1232B-45

6.2L V8 or 6.8L Triton-30V - V10

Positive Lead	Measurement / Action	Negative Lead
Refer to C1260-1	Courtesy of FORD MOTOR COMPANY	Refer to C175B-51
Refer to C1260-2	Courtesy of FORD MOTOR COMPANY	Refer to C175B-33
Refer to C1260-3	Courtesy of FORD MOTOR COMPANY	Refer to C175B-52

Are the resistances less than 3 ohms?

Yes

GO to A5

No	REPAIR the circuit.

A5 CHECK THE A/C (AIR CONDITIONING) PRESSURE SENSOR CIRCUITS FOR A SHORT TOGETHER

Measure:

Positive Lead	Measurement / Action	Negative Lead
Refer to C1260-1	Courtesy of FORD MOTOR COMPANY	Refer to C1260-2
Refer to C1260-1	Courtesy of FORD MOTOR COMPANY	Refer to C1260-3
Refer to C1260-2	Courtesy of FORD MOTOR COMPANY	Refer to C1260-3

Are the resistances greater than 10, 000 ohms?

Yes	INSTALL a new A/C pressure transducer. REFER to: Air Conditioning (A/C) Pressure Transducer . TEST the system for normal operation. If the concern is still present, GO to A6

No	REPAIR the circuits.

A6 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PCM 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 all 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 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 a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.