Chrysler RG Voyager. Manual — part 581

Symptom:

P0522 PRESSURE SENSOR LOW

When Monitored and Set Condition:

P0522 PRESSURE SENSOR LOW

When Monitored:

Engine running and battery voltage above 10.4 volts.

Set Condition:

The oil pressure sensor voltage at PCM goes below 0.1 of a volt for 0.5 of

a second.

POSSIBLE CAUSES

OIL PRESSURE SENSOR VOLTAGE BELOW 0.1 VOLTS

OIL PRESSURE SENSOR INTERNAL FAILURE

(G6) OIL PRESS SIGNAL SHORTED TO GROUND

PCM

TEST

ACTION

APPLICABILITY

1

NOTE: Ensure the engine oil pressure is at the correct pressure before
continuing.
Ignition on, engine not running.
With the DRBIII

t, read the Oil Pressure Sensor voltage.

Is the voltage below 0.1 volt?

All

Yes

→ Go To 2

No

→ Refer to the INTERMITTENT CONDITION symptom in the

Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

2

Turn the ignition off.
Disconnect the Oil Pressure Sensor harness connector.
Ignition on, engine not running.
With the DRBIII

t, read Oil Pressure Sensor voltage.

Does the Oil Pressure Sensor voltage read approximately 10 volts?

All

Yes

→ Replace the Oil Pressure Sensor.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 3

3

Turn the ignition off.
Disconnect the Oil Pressure Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the (G6) Oil Press Signal circuit in the
Oil Pressure Sensor harness connector.
Is the resistance below 100 ohms?

All

Yes

→ Repair the ground shorted to the (G6) Oil Press Signal circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Replace and program the Powertrain Control Module in accor-

dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

206

DRIVEABILITY - NGC

Symptom:

P0532-A/C PRESSURE SENSOR LOW

When Monitored and Set Condition:

P0532-A/C PRESSURE SENSOR LOW

When Monitored:

The engine running. The A/C relay energized.

Set Condition:

The A/C pressure sensor signal voltage at the PCM goes below 0.58 volts

for 2.6 seconds. One Trip Fault.

POSSIBLE CAUSES

A/C PRESSURE SENSOR VOLTAGE BELOW 0.6 VOLTS

(K7) 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND

(K7) 5 VOLT SUPPLY CIRCUIT OPEN

A/C PRESSURE SENSOR INTERNAL FAILURE

(C18) A/C PRESSURE SIGNAL CIRCUIT SHORTED TO GROUND

(C18) A/C PRESSURE SIGNAL CIRCUIT SHORTED TO (K4) SENSOR GROUND CIRCUIT

PCM (K7) 5 VOLT SUPPLY CIRCUIT

PCM A/C PRESSURE SENSOR SIGNAL

TEST

ACTION

APPLICABILITY

1

NOTE: Ensure the A/C refrigerant System is properly charged per the
Service Information.
Start the engine.
With the DRBIII

t, read the A/C Pressure Sensor voltage.

Is the voltage below 0.6 of a volt?

All

Yes

→ Go To 2

No

→ Refer to the INTERMITTENT CONDITION symptom in the

Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.

2

Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Turn the ignition on.
Measure the voltage of the (K7) 5 Volt Supply circuit in the A/C Pressure Sensor
harness connector.
Is the voltage between 4.5 to 5.2 volts?

All

Yes

→ Go To 3

No

→ Go To 7

207

DRIVEABILITY - NGC

TEST

ACTION

APPLICABILITY

3

Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
With the DRBIII

t, monitor the A/C Pressure Sensor voltage.

Turn the ignition on.
Is the voltage above 0.6 of a volt?

All

Yes

→ Replace the A/C Pressure Sensor.

Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.

No

→ Go To 4

4

Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the (C18) A/C Pressure Signal circuit in
the A/C Pressure Sensor harness connector.
Is the resistance below 100 ohms?

All

Yes

→ Repair the short to ground in the (C18) A/C Pressure Signal

circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.

No

→ Go To 5

5

Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between the (C18) A/C Pressure Sensor Signal circuit and the
(K4) Sensor ground circuit in the A/C Pressure Sensor harness connector.
Is the resistance below 100 ohms?

All

Yes

→ Repair the short to the (K4) Sensor ground circuit in the (C18) A/C

Pressure Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.

No

→ Go To 6

6

NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
If there are no possible causes remaining, view repair.

All

Repair

Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.

7

Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the (K7) 5 Volt Supply circuit in the A/C
Pressure Sensor harness connector.
Is the resistance below 100 ohms?

All

Yes

→ Repair the short to ground in the (K7) 5 Volt Supply circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.

No

→ Go To 8

208

DRIVEABILITY - NGC

P0532-A/C PRESSURE SENSOR LOW —

Continued

TEST

ACTION

APPLICABILITY

8

Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the (K7) 5 Volt Supply circuit from the A/C Pressure Sensor
harness connector to the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 9

No

→ Repair the open in the (K7) 5 Volt Supply circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.

9

NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
If there are no possible causes remaining, view repair.

All

Repair

Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.

209

DRIVEABILITY - NGC

P0532-A/C PRESSURE SENSOR LOW —

Continued