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DTC P0262-00: No. 1 Injector circuit high input,
DTC P0265-00: No. 2 Injector circuit high input,
DTC P0268-00: No. 3 Injector circuit high input,
DTC P0271-00: No. 4 Injector circuit high input
 
 
 
 
CIRCUIT OPERATION
  • MFI relay is built into the IPDM E/R.
  • Power is supplied from the MFI relay to each fuel injector connector (terminal number 2).
  • The ECM connector terminal number 3, 4, 5, 6 turn on the power transistor in the unit, and electrical current flows to each fuel injector connector (terminal number 1).
 
 
TECHNICAL DESCRIPTION
The amount of fuel injected by the fuel injector is controlled by the amount of continuity time the coil is grounded by the ECM.
 
 
DESCRIPTIONS OF MONITOR METHODS
The ECM detects short malfunction.
 
 
MONITOR EXECUTION
Continuous.
 
 
MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)
Other Monitor (There is no temporary DTC set in memory for the item monitored below)
  • Not applicable
Sensor (The sensor below is determined to be normal)
  • Not applicable
 
 
DTC SET CONDITIONS
Logic Flow Chart
Check Conditions
  • Power supply mode of electric motor switch is ON.
  • 12V starter battery positive voltage is between 10.0 and 16.5 volts.
Judgment Criterion
  • The coil current is 4.5 amperes or higher with the injector driving for 2 seconds.
 
 
FAIL-SAFE AND BACKUP FUNCTION
None.
 
 
OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function, OBD-II Drive Cycle – Pattern 1 OBD- II DRIVE CYCLE.
 
 
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  • Fuel injector failed.
  • Shorted fuel injector circuit, harness damage or connector damage.
  • ECM failed.
 
 
DIAGNOSIS
Required Special Tools:
  • MB992744: Vehicle communication interface-Lite (V.C.I.-Lite)
  • MB992745: V.C.I.-Lite main harness A
  • MB992747: V.C.I.-Lite USB cable short
  • MB992748: V.C.I.-Lite USB cable long
1.STEP 1. Using scan tool (M.U.T.-IIISE), perform the actuator test.
Use scan tool (M.U.T.-III SE) to perform the actuator test (Refer to ACTUATOR TEST REFERENCE TABLE).
  • Item number 10: Injection cut
OK: Idling state varies.
Q: Is the check result normal?
 
2.STEP 2. Check fuel injector itself.
Check number 1 cylinder fuel injector, number 2 cylinder fuel injector, number 3 cylinder fuel injector and number 4 cylinder fuel injector itself (Refer to FUEL INJECTOR CHECK).
Q: Are the check result normal?
Replace the fuel injector (Refer to FUEL INJECTOR REMOVAL AND INSTALLATION).
 
3.STEP 3. Check harness between number 1 cylinder fuel injector connector terminal number 1 and ECM connector terminal number 3.
Check output line for short circuit.
Q: Is the check result normal?
Repair or replace the connector, or repair the damaged harness wire.
 
4.STEP 4. Check harness between number 2 cylinder fuel injector connector terminal number 1 and ECM connector terminal number 4.
Check output line for short circuit.
Q: Is the check result normal?
Repair or replace the connector, or repair the damaged harness wire.
 
5.STEP 5. Check harness between number 3 cylinder fuel injector connector terminal number 1 and ECM connector terminal number 5.
Check output line for short circuit.
Q: Is the check result normal?
Repair or replace the connector, or repair the damaged harness wire.
 
6.STEP 6. Check harness between number 4 cylinder fuel injector connector terminal number 1 and ECM connector terminal number 6.
Check output line for short circuit.
Q: Is the check result normal?
Repair or replace the connector, or repair the damaged harness wire.
 
7.STEP 7. Test the OBD-II drive cycle.
After erasing the DTC, carry out test drive with the drive cycle pattern, and recheck the DTC.
(1) Use scan tool (M.U.T.-III SE) to erase the DTC.
(2) Carry out test drive with the drive cycle pattern (Refer to Diagnostic Function, OBD-II Drive Cycle – Pattern 1 OBD- II DRIVE CYCLE).
(3) Use scan tool (M.U.T.-III SE) to recheck the DTC.
Q: Is DTC P0262-00, P0265-00, P0268-00, or P0271-00 set?
Replace the ECM (Refer to ENGINE CONTROL MODULE (ECM) REMOVAL AND INSTALLATION).
Intermittent malfunction (Refer to GENERAL INFORMATION, General Information – How to Use Troubleshooting/Inspection Service Points – How to Cope with Intermittent Malfunctions HOW TO COPE WITH INTERMITTENT MALFUNCTIONS).