PINPOINT TEST G531332p35

Pinpoint Tests

PINPOINT TEST G531332p35 : AIR CONDITIONING (A/C) PRESSURE SENSOR CIRCUIT LOW/HIGH VOLTAGE

G531332t158 : CHECK THE A/C PRESSURE SENSOR SENSING CIRCUIT FOR HIGH RESISTANCE
1. Key off.
2. Disconnect the A/C pressure sensor electrical connector, EC11.
3. Disconnect the ECM electrical connector, PI300.
4. Measure the resistance between:

A/C pressure sensor ECM connector PI300,
connector EC11, harness side harness side
Pin 02 Pin 12

- Is the resistance greater than 5 Ohms?

->YES
REPAIR the high resistance circuit. CLEAR the DTC. TEST the system for normal operation.

->NO
GO to Pinpoint Test G531332t159.

G531332t159 : CHECK THE A/C PRESSURE SENSOR SENSING CIRCUIT FOR SHORT CIRCUIT TO POWER
1. Key on, engine off.
2. Measure the voltage between:

A/C pressure sensor Battery
connector EC11, harness side
Pin 02 Negative terminal

- Is the voltage greater than 3 volts?

->YES
REPAIR the short circuit. CLEAR the DTC. TEST the system for normal operation.

->NO
GO to Pinpoint Test G531332t160.

G531332t160 : CHECK THE A/C PRESSURE SENSOR SENSING CIRCUIT FOR SHORT CIRCUIT TO GROUND
1. Key off.
2. Measure the resistance between:

A/C pressure sensor Battery
connector EC11, harness side
Pin 02 Negative terminal

- Is the resistance less than 10,000 Ohms?

->YES
REPAIR the short circuit. CLEAR the DTC. TEST the system for normal operation.

->NO
INSTALL a new A/C pressure sensor.