PINPOINT TEST G531332P36

Pinpoint Tests

PINPOINT TEST G531332p36 : MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR SENSING CIRCUIT MALFUNCTION, HIGH/LOW VOLTAGE (VEHICLES WITH SUPERCHARGER)

G531332t97 : CHECK THE MAP SENSOR SENSING CIRCUIT FOR HIGH RESISTANCE
1. Key off.
2. Disconnect the MAP sensor electrical connector, PI301.
3. Disconnect the ECM electrical connector, PI300.
4. Measure the resistance between:

MAP sensor connector PI301, ECM connector PI300,
harness side harness side
Pin 01 Pin 38

- 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 G531332t98.

G531332t98 : CHECK THE MAP SENSOR SENSING CIRCUIT FOR SHORT CIRCUIT TO POWER
1. Measure the voltage between:

MAP sensor connector PI301, Battery
harness side
Pin 01 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 G531332t99.

G531332t99 : CHECK THE MAP SENSOR SENSING CIRCUIT FOR SHORT CIRCUIT TO GROUND
1. Measure the resistance between:

MAP sensor connector PI301, Battery
harness side
Pin 01 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 MAP sensor. CLEAR the DTC. TEST the system for normal operation. If the DTC is repeated, refer to the warranty policy and procedures if an ECM is suspect.