P0453

: DTC P0453; FUEL TANK PRESSURE (FTP) SENSOR CIRCUIT MALFUNCTION, LOW/HIGH VOLTAGE

G307413t13 : CHECK THE FTP SENSOR SENSE CIRCUIT FOR HIGH RESISTANCE
1. Disconnect the battery negative terminal.
2. Disconnect the FTP sensor electrical connector, FP01.
3. Disconnect the ECM electrical connector, PI01.
4. Measure the resistance between FP01, pin 02 (RG) and PI01, pin 104 (RG).

- Is the resistance greater than 5 ohms?

-> Yes
REPAIR the high resistance circuit. CLEAR the DTC. Carry out a full evaporative system monitor drive cycle.

-> No

G307413t14 : CHECK THE FTP SENSOR SENSE 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 FP01, pin 02 (RG) and GROUND.

- Is the voltage greater than 3 volts?

-> Yes
REPAIR the short circuit. CLEAR the DTC. Carry out a full evaporative system monitor drive cycle.

-> No

G307413t15 : CHECK THE FTP SENSOR SENSE CIRCUIT FOR SHORT TO GROUND
1. Measure the resistance between FP01, pin 02 (RG) and GROUND.

- Is the resistance less than 10,000 ohms?

-> Yes
REPAIR the short circuit. CLEAR the DTC. Carry out a full evaporative system monitor drive cycle.

-> No
INSTALL a new FTP sensor. CLEAR the DTC. Carry out a full evaporative system monitor drive cycle.