PINPOINT TEST G258127p37

Pinpoint Tests

PINPOINT TEST G258127p37 : P0096, P0097, P0098; INTAKE AIR TEMPERATURE (IAT) SENSOR 2 SENSING CIRCUIT RANGE/PERFORMANCE, HIGH/LOW VOLTAGE

G258127t166 : CHECK IAT SENSOR 2 SENSING CIRCUIT FOR HIGH RESISTANCE
1. Disconnect the battery negative terminal.
2. Disconnect the IAT sensor 2 electrical connector, PI43.
3. Disconnect the ECM electrical connector, PI01.
4. Measure the resistance between PI43, pin 01 (YU) and PI01, pin 72 (YU).

- 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 G258127t167.

G258127t167 : CHECK IAT SENSOR 2 SENSING CIRCUIT FOR SHORT TO HIGH VOLTAGE
1. Reconnect the battery negative terminal.
2. Turn the ignition switch to the ON position.
3. Measure the voltage between PI43, pin 01 (YU) and GROUND.

- Is the voltage greater than 3 volts?

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

->NO
GO to Pinpoint Test G258127t168.

G258127t168 : CHECK IAT SENSOR 2 SENSING CIRCUIT FOR SHORT TO GROUND
1. Turn the ignition switch to the OFF position.
2. Measure the resistance between PI43, pin 01 (YU) and GROUND.

- Is the resistance less than 10,000 Ohms?

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

->NO
INSTALL a new IATS2. CLEAR the DTC. TEST the system for normal operation.