P0201

A : FUEL INJECTORS: P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208

NOTE: The DTC set will indicate which cylinder injector or circuit is faulty. Only in the event of multiple cylinder misfires will it be necessary to check more than one injector or circuit, in which case, multiple DTCs will be set.

A1 : CHECK THE INJECTOR COIL RESISTANCE
1. Turn the ignition switch to the OFF position.
2. Disconnect the relevant injector electrical connector. (PI032 to PI039).
3. Measure the resistance between the injector pins.

Is the resistance between 12 and 16 ohms?

Yes
Goto A2

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

A2 : CHECK THE INJECTOR COIL INSULATION
1. Measure the resistance between the injector pin 001 and the injector body.
2. Measure the resistance between the injector pin 002 and the injector body.

Are both resistances greater than 10,000 ohms?

Yes
Goto A3

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

A3 : CHECK THE INJECTOR SUPPLY VOLTAGE
1. Turn the ignition switch to the ON position.
2. Disconnect the relevant injector harness electrical connector, (PI032 to PI039).
3. Measure the voltage between the relevant injector harness electrical connector, (PI032 to PI039) pin 002 and GROUND.

Is the voltage greater than 12 Volts?

Yes
Goto A4

No
REPAIR the circuit between the relevant injector harness electrical connector, (PI032 to PI039) pin 002 and battery. This circuit includes the power distribution fuse box, fuse 41, and the EMS control relay. For additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system for normal operation.

A4 : CHECK THE INJECTOR GROUND CIRCUIT
1. Turn the ignition switch to the OFF position.
2. Disconnect the PCM electrical connector, PI001.
3. Measure the resistance between the relevant injector harness electrical connector, (PI032 to PI039) pin 001 and PI001, pins as follows -
- Injector Cyl 1 pin 001 (BG) and PCM pin 120.
- Injector Cyl 2 pin 001 (BR) and PCM pin 115.
- Injector Cyl 3 pin 001 (BK) and PCM pin 114.
- Injector Cyl 4 pin 001 (BO) and PCM pin 115.
- Injector Cyl 5 pin 001 (BG) and PCM pin 113.
- Injector Cyl 6 pin 001 (U) and PCM pin 118.
- Injector Cyl 7 pin 001 (BW) and PCM pin 117.
- Injector Cyl 8 pin 001 (UY) and PCM pin 112.

Is the resistance less than 5 ohms?

Yes
Goto A5

No
REPAIR the circuit between the relevant injector harness electrical connector pin 001 and the powertrain control module electrical connector. For additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system for normal operation.

A5 : CHECK THE INJECTOR GROUND CIRCUIT FOR SHORT CIRCUIT TO BATTERY
1. Measure the voltage between the relevant injector harness electrical connector, (PI032 to PI039) pin 001 and GROUND.

Is the voltage greater than 1 volt?

Yes
REPAIR the short circuit. For additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system for normal operation.

No
Goto A6

A6 : CHECK THE INJECTOR GROUND CIRCUIT FOR SHORT CIRCUIT TO GROUND
1. Measure the resistance between the relevant injector harness electrical connector, (PI032 to PI039) pin 001 and GROUND.

Is the resistance less than 10,000 ohms?

Yes
REPAIR the short circuit. For additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system for normal operation.

No
INSTALL a new PCM.