PINPOINT TEST G251562p2

PINPOINT TEST G251562p2: P1233; FUEL PUMP 2 DRIVE CIRCUIT FAULT

G251562t14: CHECK THE ECM TO FUEL PUMP 2 MODULE DRIVE CIRCUIT FOR HIGH RESISTANCE
1. Disconnect the battery negative terminal.
2. Disconnect the ECM electrical connector, PI01.
3. Disconnect the fuel pump module electrical connector, CR26.
4. Measure the resistance between PI01, pin 11 (Y) and CR26, pin 07 (Y).

- 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 G251562t15.

G251562t15: CHECK THE ECM TO FUEL PUMP 2 MODULE DRIVE CIRCUIT FOR SHORT TO GROUND
1. Reconnect the battery negative terminal.
2. Measure the resistance between PI01, pin 11 (Y) and GROUND.

- Is the resistance less than 10,000 Ohms?

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

-> NO
GO to Pinpoint Test G251562t16.

G251562t16: CHECK THE ECM TO FUEL PUMP 2 MODULE DRIVE CIRCUIT FOR SHORT TO B+
1. Measure the voltage between PI01, pin 11 (Y) and GROUND.

- Is the voltage greater than 3 volts?

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

-> NO
INSTALL a new fuel pump module. CLEAR the DTC. TEST the system for normal operation.