P0201

Pinpoint Tests

A : DTC P0201; FUEL INJECTORS

G290117t1/G240048t1 : CHECK THE INJECTOR COIL RESISTANCE
1. Turn the ignition switch to the OFF position.
2. Disconnect the relevant injector electrical connector (PI32 to PI39).
3. Measure the resistance between the injector pins.

- Is the resistance between 12 and 16 ohms?

-> Yes

-> No
INSTALL a new injector. CLEAR the DTC. TEST the system for normal operation.

G290117t2/G240048t2 :CHECK THE INJECTOR COIL INSULATION
1. Measure the resistance between the injector pin 01 and the injector body.
2. Measure the resistance between the injector pin 02 and the injector body.

- Is either resistance less than 10,000 ohms?

-> Yes
INSTALL a new injector. CLEAR the DTC. TEST the system for normal operation.

-> No

G290117t3/G240048t3 :CHECK THE INJECTOR SUPPLY VOLTAGE
1. Turn the ignition switch to the ON position.
2. Disconnect the relevant injector harness electrical connector (PI32 to PI39).
3. Measure the voltage between the relevant injector harness electrical connector (PI32 to PI39) pin 02 and GROUND.

- Is the voltage less than 10 Volts?

-> Yes
REPAIR the circuit between the relevant injector harness electrical connector (PI32 to PI39) pin 02 and battery. This circuit includes the front power distribution fuse box, fuse 13, and the EMS control relay. CLEAR the DTC. TEST the system for normal operation.

-> No

G290117t4/G240048t4:CHECK THE INJECTOR GROUND CIRCUIT
1. Turn the ignition switch to the OFF position.
2. Disconnect the battery negative terminal.
3. Disconnect the ECM electrical connector PI01.
4. Measure the resistance between the relevant injector harness electrical connector (PI32 to PI39) pin 001 and the ECM electrical connector PI01, pins as follows:

- Is the resistance greater than 5 ohms?

-> Yes
REPAIR the circuit between the relevant injector harness electrical connector pin 01 and the engine control module electrical connector. CLEAR the DTC. TEST the system for normal operation.

-> No

G290117t5/G240048t5: CHECK THE INJECTOR GROUND CIRCUIT FOR SHORT CIRCUIT TO BATTERY
1. Reconnect the battery negative terminal.
2. Measure the voltage between the relevant injector harness electrical connector (PI32 to PI39) pin 01 and GROUND.

- Is the voltage greater than 3 volts?

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

-> No

G290117t6/G240048t6 : CHECK THE INJECTOR GROUND CIRCUIT FOR SHORT CIRCUIT TO GROUND
1. Measure the resistance between the relevant injector harness electrical connector (PI32 to PI39) pin 01 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
Contact dealer technical support for advice on possible ECM failure.