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7 CHECK FUNCTION OF INJECTORS
With CONSULT-II
1. Start engine.
2. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-II.
SEF070Y
3. Make sure that each circuit produces a momentary engine speed drop.
Without CONSULT-II
1. Start engine.
2. Listen to each injector operating sound.
MEC703B
Clicking noise should be heard.
OK or NG
OK © GO TO 8.
NG © Perform trouble diagnosis for “INJECTORS”, EC-609.
8 CHECK INJECTOR
1. Remove injector assembly. Refer to EC-51.
Keep fuel hose and all injectors connected to injector gallery.
2. Confirm that the engine is cooled down and there are no fire hazards near the vehicle.
3. Disconnect injector harness connectors bank 2 (for DTC P0172), bank 1 (for P0175).
The injector harness connectors on bank 1 (for P0172), bank 2 (for P0175) should remain connected.
4. Disconnect all ignition coil harness connectors.
5. Prepare pans or saucers under each injectors.
6. Crank engine for about 3 seconds.
Make sure fuel does not drip from injector.
OK or NG
OK (Does not drip.) © GO TO 9.
NG (Drips.) © Replace the injectors from which fuel is dripping. Always replace O-ring with new one.
9 CHECK INTERMITTENT INCIDENT
Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-144.
© INSPECTION END
DTC P0172 (BANK 1), P0175 (BANK 2) FUEL INJECTION SYSTEM FUNCTION
(RICH)
Diagnostic Procedure (Cont’d)
EC-306
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