P0452

: P0452. FUEL TANK PRESSURE SENSOR LOW/HIGH INPUT.

G92425t20 : CHECK FTPS SIGNAL WIRE FOR CONTINUITY UP TO CONNECTOR
CA5.
1. Disconnect ECM electrical connector, EN16.
2. Disconnect FTPS electrical connector, CA5.
3. Check for continuity between EN16, pin 104 (RG) and CA5, pin 4 (RG).

This test will not check the continuity of the harness from CA5 to FT1. If the circuit is continuous to CA5, the fuel tank must be removed and the harness and sensor continuity checked.

- Is the circuit continuous?

-> Yes
INSTALL a new FTPS, (and/or harness, CA5 to FT1). CLEAR the DTC. Turn the ignition switch to the ON position. Leave switched on for minimum 30 seconds. RECHECK DTCs. If the DTC is repeated, INSTALL a new ECM. Before replacing a ECM, contact Dealer technical support.

-> No
REPAIR the circuit between EN16, pin 104 (RG) and CA5, pin 4 (RG). CLEAR the DTC. Carry out a full Evaporative system monitor drive cycle. RECHECK DTCs.

G92425t27 : CHECK FTPS SUPPLY WIRE FOR SHORT TO GROUND UP TO CONNECTOR CA5
1. Measure the resistance between CA5, pin 5 (OY) and GROUND.

This test will not check the integrity of the harness from CA5 to FT1. If the circuit is sound to CA5, the fuel tank must be removed and the harness and sensor continuity checked.

- Is the resistance less than 10,000 ohms?

-> Yes
REPAIR the short to GROUND. CLEAR the DTC. Turn the ignition switch to the ON position. Leave switched on for minimum 30 seconds. RECHECK DTCs.

-> No

G92425t23 : CHECK FTPS SIGNAL WIRE FOR SHORT TO GROUND, UP TO CONNECTOR CA5.
1. Connect ECM electrical connector, EN16.
2. Measure the resistance between CA5, pin 4 (RG) and GROUND.

This test will not check the integrity of the harness from CA5 to FT1. If the circuit is sound to CA5, the fuel tank must be removed and the harness and sensor continuity checked.

- Is the resistance less than 10,000 ohms?

-> Yes
REPAIR the short to GROUND. CLEAR the DTC. Turn the ignition switch to the ON position. Leave switched on for minimum 30 seconds. RECHECK DTCs.

-> No

G92425t25 : CHECK FTPS SIGNAL WIRE FOR SHORT TO BATTERY, UP TO CONNECTOR CA5
1. Turn the ignition switch to the ON position.
2. Check for a voltage at CA5, pin 4 (RG).

This test will not check the integrity of the harness from CA5 to FT1. If the circuit is sound to CA5, the fuel tank must be removed and the harness and sensor continuity checked.

- Is the voltage greater than 1 volt?

-> Yes
REPAIR the short to battery. CLEAR the DTC. Turn the ignition switch to the ON position. Leave switched on for minimum 30 seconds. RECHECK DTCs.

-> No

G92425t26 : CHECK FTPS GROUND WIRE FOR SHORT TO BATTERY, UP TO CONNECTOR CA5
1. Turn the ignition switch to the ON position.
2. Check for a voltage at CA5, pin 6 (BG).

- Is the voltage greater than 1 volt?

-> Yes
REPAIR the short to battery. CLEAR the DTC. Carry out a full Evaporative system monitor drive cycle, RECHECK DTCs.

-> No

G92425t28 : CHECK FTPS SUPPLY WIRE FOR SHORT TO BATTERY UP TO CONNECTOR CA5
1. Connect ECM electrical connector, EN16.
2. Turn the ignition switch to the ON position.
3. Check for a voltage at CA5, pin 5 (OY).

This test will not check the integrity of the harness from CA5 to FT1. If the circuit is sound to CA5, the fuel tank must be removed and the harness and sensor continuity checked.

- Is the voltage greater than 5 volts?

-> Yes
REPAIR the short to battery. CLEAR the DTC. Carry out a full Evaporative system monitor drive cycle, RECHECK DTCs.

-> No
INSTALL a new FTPS, (and/or harness, CA5 to FT1). CLEAR the DTC. Carry out a full Evaporative system monitor drive cycle, RECHECK DTCs. If the DTC is repeated, INSTALL a new ECM. Before replacing a ECM, contact Dealer technical support.