Diagnostic Procedure

Turn ignition switch to START.

Is any cylinder ignited? 

Yes or No 

Yes: GO TO 2.

No: GO TO  3.

With CONSULT-II 

1. Start engine.
2. Perform "POWER BALANCE" in "ACTIVE TEST" mode with CONSULT-II.
3. Make sure that each circuit produces a momentary engine speed drop.
   Fig 1: CONSULT-II Display - ACTIVE TEST

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Without CONSULT-II 

1. Start engine.
2. Listen to each fuel injector operating sound.

   Operating sound should exist. 

OK or NG 

OK: INSPECTION END 

NG: GO TO 3.

Fig 2: Checking Fuel Injector

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1. Turn ignition switch OFF.
2. Disconnect fuel injector harness connectors.
   Fig 3: Identifying Fuel Injector Harness Connectors (Bank 1 And Bank 2)

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3. Turn ignition switch ON.
4. Check voltage between fuel injector terminal 1 and ground with CONSULT-II or tester.

   Voltage: Battery voltage 

OK or NG 

OK: GO TO  5.

NG: GO TO 4.

Fig 4: Checking Voltage Between Fuel Injector Terminal 1 And Ground

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Check the following.

• Harness connectors M72, F102
• Fuse block (J/B) connector M4
• 15A fuse
• Harness for open or short between fuel injector and fuse

  >> Repair open circuit or short to ground or short to power in harness or connectors.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminals 21, 22, 23, 40, 41, 42, 44, 63 and fuel injector terminal 2. Refer to WIRING DIAGRAM .

   Continuity should exist. 

4. Also check harness for short to ground and short to power.

OK or NG 

OK: GO TO 6.

NG: Repair open circuit or short to ground or short to power in harness or connectors.

Refer to "COMPONENT INSPECTION ".

OK or NG 

OK: GO TO 7.

NG: Replace fuel injector.

Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

>> INSPECTION END