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PRESSURE/TEMPERATURE (MAPT) G531332t101 : CHECK THE POWER SUPPLY TO THE MAPT SENSOR 1. Key off. 2. Disconnect the MAPT connector, PI310. 3. Key on, engine off. 4. Measure the voltage between: MAPT sensor connnector PI310, harness side Battery
Pin 02
Negative terminal
Is the voltage greater than 4 volts? -> Yes GO to Pinpoint Test G531332t102.
-> No CHECK the circuit between the MAPT sensor, pin 02 and the ECM. Refer to the warranty policy and procedures manual if an ECM is suspect. G531332t102 : CHECK THE GROUND TO THE MAPT SENSOR 1. Key off. 2. Measure the resistance between: MAPT sensor connnector PI310, harness side Battery
Pin 04
Negative terminal
Is the resistance greater than 5 ohms? -> Yes REPAIR the high resistance circuit. This circuit includes splice PIS49 and the ECM. For additional information, refer to the wiring diagrams. CLEAR the DTC. TEST the system for normal operation. Refer to the warranty policy and procedures manual if an ECM is suspect.
-> No GO to Pinpoint Test G531332t100.
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