PINPOINT TEST G531332p37

Pinpoint Tests

PINPOINT TEST G531332p37 : MANIFOLD ABSOLUTE PRESSURE SENSOR/TEMPERATURE (MAPT) SENSOR, INTAKE AIR TEMPERATURE (IAT2) SENSING CIRCUIT

G531332t166 : CHECK THE MAPT SENSOR IAT2 SENSING CIRCUIT FOR HIGH RESISTANCE
1. key off.
2. Disconnect the MAPT sensor electrical connector, PI301.
3. Disconnect the ECM electrical connector, PI300.
4. Measure the resistance between:

MAPT sensor connector ECM connector PI300,
PI301, harness side harness side
Pin 03 Pin 39

- 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 G531332t167.

G531332t167 : CHECK THE MAPT SENSOR IAT2 SENSING CIRCUIT FOR SHORT CIRCUIT TO POWER
1. Key on, engine off.
2. Measure the voltage between:

MAPT sensor connector Battery
PI301, harness side
Pin 03 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 G531332t168.

G531332t168 : CHECK THE MAPT SENSOR IAT2 SENSING CIRCUIT FOR SHORT CIRCUIT TO GROUND
1. Key off.
2. Measure the resistance between:

MAPT sensor connector Battery
PI301, harness side
Pin 03 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 MAPT sensor. CLEAR the DTC. TEST the system for normal operation.