Isuzu Rodeo UE. Manual - part 230

6E1–291

RODEO X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

DTC P0532 A/C Refigerant Pressure Sensor Circuit Low Input

 

Step

Action

Value(s)

Yes

No

1

Was the ”On–Board Diagnostic (OBD) System Check”
performed?

—

Go to Step 2 

Go to OBD

System

Check 

2

1. Ignition ON, Engine OFF.
2. Review and record Scan Tool’s Failure Records

data, then clear the DTC’s.

3. Operate the vehicle within the Failure Records

conditions as noted.

4. Using the Tech 2, monitor ”DTC” info for DTC

P0532.

Does the Tech 2 indicate DTC P0532 ”Ran and
Passed?”

—

Refer to

Diagnostic

Aids 

Go to Step 3 

3

1. Ignition OFF.
2. Disconnect the A/C refrigerant pressure sensor

wiring harness connector from the A/C refrigerant
pressure sensor.

3. Start the vehicle, and monitor the A/C refrigerant

pressure value with the Tech 2.

Does the A/C refrigerant pressure sensor value on the
Tech 2 hold steadily at the given value?

less than 0.1

volts

Go to Step 5 

Go to Step 4 

4

Check the A/C refrigerant pressure sensor signal
circuit, between the A/C refrigerant pressure sensor
and the Powertrain Control Module (PCM), for a short
to voltage.

Was the problem found?

—

Verify repair

Go to Step 12

5

Check the A/C refrigerant pressure sensor signal
circuit, between the A/C refrigerant pressure sensor
and the PCM for the following conditions:

f

A short to ground

f

An open circuit

Was the problem found?

—

Verify repair

Go to Step 6 

6

Check the 5 volt signal circuit, between the A/C
refrigerant pressure sensor and the PCM, for the
following conditions:

f

An open circuit

f

A short to voltage

f

A short to ground

Was the problem found?

—

Verify repair

Go to Step 7 

7

1. Ignition OFF.
2. Place a Digital Voltmeter (DVM), set to measure

voltage between the 5 volt signal circuit and ground.

3. Ignition ON, Engine OFF.

Does the DVM indicate the following value?

about 5 volts

Go to Step 8 

Go to Step 12

6E1–292

RODEO X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

DTC P0532 A/C Refigerant Pressure Sensor Circuit Low Input

  (Cont'd)

Step

No

Yes

Value(s)

Action

8

1. Ignition OFF.
2. Place a fused jumper between the A/C refrigerant

pressure sensor and the 5 volt signal circuit, both at
the wiring harnesses A/C refrigerant pressure
sensor connector.

3. Ignition ON, Engine OFF.
4. Observe the A/C refrigerant pressure sensor value

displayed on the Tech 2.

Does the Tech 2 read the following value?

about 5 volts

Go to Step 9 

Go to Step 12

9

Check the A/C refrigerant pressure sensor and the
PCM, for the following conditions:

f

An open circuit

f

A short to ground

f

A short to voltage

Was the problem found?

—

Verify repair

Go to Step 10

10

1. Ignition OFF.
2. Place a Digital Voltmeter (DVM), set to measure

voltage between the ground circuit and the 5 volt
signal circuit, both at the wiring harnesses A/C
refigerant pressure sensor connector.

3. Ignition ON, Engine OFF.

Does the DVM indicate the following value?

about 5 volts

Go to Step 11

Go to Step 12

11

Replace the A/C refrigerant pressure sensor.
Verify Repair.

—

—

—

12

Replace the PCM.

IMPORTANT: The replacement PCM must be
programmed. Refer to On–Vehicle Service in
Powertrain Control Module and Sensors for
procedures. 

And also refer to latest Service Bulletin.
Check to see if the Latest software is released or not.
And then Down Load the LATEST PROGRAMMED
SOFTWARE to the replacement PCM.

Verify repair.

—

—

—

6E1–293

RODEO X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

DIAGNOSTIC TROUBLE CODE (DTC) P0533 A/C REFRIGERANT PRESSURE

SENSOR CIRCUIT HIGH INPUT

D06RX060

Circuit Description

The Powertrain Control Module (PCM) monitors the A/C
refigerant pressure through the use of a three wire
sensor.  If the PCM senses the pressure falls below a
threshold value, then DTC P0533 will set.  DTC P0533 is a
type D code.

Conditions for Setting the DTC

f

A/C pressure sensor is above 250 counts (4.88 volts)
for 125 seconds within a 250 seconds test sample.

Action Taken When the DTC Sets

f

The PCM will not illuminate the Malfunction Indicator
Lamp (MIL).

f

The PCM will store the conditions that were present
when the DTC was set as Freeze Frame and in Failure
Records.

Conditions for Clearing the DTC

f

A history DTC will clear after 40 consecutive trips
without a reported failure.

f

The DTC can be cleared using a Scan Tool’s ”Clear
Info” function.

Diagnostic Aids

f

Poor Conditions, or a damaged harness – Inspect the
harness connectors for: backed–out terminals,
improper mating or damaged terminals.  Also, check
for open circuits, shorts to ground, and shorts to
voltage.

6E1–294

RODEO X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

DTC P0533   A/C Refigerant Pressure Sensor Circuit High Input

 

Step

Action

Value(s)

Yes

No

1

Was the ”On–Board Diagnostic (OBD) System Check”
performed?

—

Go to Step 2 

Go to OBD

System

Check 

2

1. Ignition ON, Engine OFF.
2. Review and record Scan Tool’s Failure Records

data, then clear the DTC’s.

3. Operate the vehicle within the Failure Records

conditions as noted.

4. Using the Tech 2, monitor ”DTC” info for DTC

P0533.

Does the Tech 2 indicate DTC P0533 ”Ran and
Passed?”

—

Refer to

Diagnostic

Aids 

Go to Step 3 

3

1. Ignition OFF.
2. Disconnect the A/C refrigerant pressure sensor

wiring harness connector from the A/C refrigerant
pressure sensor.

3. Start the vehicle, and monitor the A/C refrigerant

pressure value with the Tech 2.

Does the A/C refrigerant pressure sensor value on the
Tech 2 hold steadily at the given value?

less than 0.1

volts

Go to Step 5 

Go to Step 4 

4

Check the A/C refrigerant pressure sensor signal
circuit, between the A/C refrigerant pressure sensor
and the Powertrain Control Module (PCM), for a short
to voltage.

Was the problem found?

—

Verify repair

Go to Step 12

5

Check the A/C refrigerant pressure sensor signal
circuit, between the A/C refrigerant pressure sensor
and the PCM for the following conditions:

f

A short to ground

f

An open circuit

Was the problem found?

—

Verify repair

Go to Step 6 

6

Check the 5 volt signal circuit, between the A/C
refrigerant pressure sensor and the PCM, for the
following conditions:

f

An open circuit

f

A short to voltage

f

A short to ground

Was the problem found?

—

Verify repair

Go to Step 7 

7

1. Ignition OFF.
2. Place a Digital Voltmeter (DVM), set to measure

voltage between the 5 volt signal circuit and ground.

3. Ignition ON, Engine OFF.

Does the DVM indicate the following value?

about 5 volts

Go to Step 8 

Go to Step 12