PINPOINT TEST G531332p34

Pinpoint Tests

PINPOINT TEST G531332p34 : ENGINE FUEL TEMPERATURE (EFT) SENSOR RANGE/PERFORMANCE, LOW/HIGH VOLTAGE

G531332t155 : CHECK THE EFT SENSOR SENSING CIRCUIT FOR HIGH RESISTANCE
1. Key off.
2. Disconnect the EFT sensor electrical connector, PI27.
3. Disconnect the ECM electrical connector, PI300.
4. Measure the resistance between:

EFT sensor connector PI27, ECM connector PI300,
harness side harness side
Pin 02 Pin 46

- 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 G531332t156.

G531332t156 : CHECK THE EFT SENSOR SENSING CIRCUIT FOR SHORT CIRCUIT TO POWER
1. Key on, engine off.
2. Measure the voltage between:

EFT sensor connector PI27, Battery
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 G531332t157.

G531332t157 : CHECK THE EFT SENSOR SENSING CIRCUIT FOR SHORT CIRCUIT TO GROUND
1. Key off.
2. Measure the resistance between:

EFT sensor connector PI27, Battery
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 EFT sensor. CLEAR the DTC. TEST the system for normal operation.