8. Fuel injector (see Table 1-10) Table 1-10 42 Diagnostic Trouble Code (DTC) Trouble Location or Type P0261 Cyinder 1 fuel injector circuit low P0264 Cyinder 2 fuel injector circuit low P0267 Cyinder 3 fuel injector circuit low P0270 Cyinder 4 fuel injector circuit low P0262 Cyinder 1 fuel injector circuit high P0265 Cyinder 2 fuel injector circuit high P0268 Cyinder 3 fuel injector circuit high P0271 Cyinder 4 fuel injector circuit high S/N Operation Test Results Actions 1 Ignition switch in position ON, do not start the engine. Next step 2 Disconnect the electromagnetic fuel injector from the harness. Connect the two pins of the multimeter with the pin (1) (+) and the engine respectively.
Next step 3 Ignition switch in position ON. Check if the volatage of 12V can be read in the multimeter for about 1 second. Yes Repeat 2 Yes (all) As per S/N 6 No Next step 4 Check for open or short circuit between pin J1-02 of the main relay and pin (1) of solenoid fuel injector with a multimete Yes Repair or replace harness No Next step 5 Repair or replace the fuel pump relay/main relay and relevant circuit. Yes Repair or replace harness 6 Connect an adapter between the ECU and the harness. Check for open or short circuit between pin J1-55, pin J1-70, J1-56, J1-71 of the ECU and pin (2) of the solenoid fuel injector with a multimeter.
No Next step 7 Measure the resistance between pin (1) and pin (2) of the solenoid fuel injector with a multimeter. Is the resistance between 12Ω and 16Ω under the temperature of 200C? Yes Repeat 7 Yes (all) Next step No Replace electro-magnetic fuel injector 8 Connect the solenoid fuel injector, keep neutral position, start the engine and keep idle speed. Disconnect the electromagnetic fuel injector in sequence. Check the engine for vibration when each connector is removed. Yes Repeat 8 No Replace ECU