P2004

DTC P2004 / P2006

DTC Detecting Condition and Trouble Area






Wiring Diagram










DTC Confirmation Procedure

NOTE:

- If DTCs other than aimed DTC are previously detected in DTC confirmation procedure, be sure to troubleshoot DTC previously detected.
- Check to make sure that the following condition is satisfied when using this procedure.

- 0 °C (32 °F) < ECT at engine started < 50 °C (122 °F)


1) Run engine at idle speed for 20 sec.
2) Run engine at 3,500 rpm for 20 sec.

DTC Troubleshooting

1.
Was "Engine and Emission Control System Check" performed?
YES -
Go to Step 2.
NO -
Go to Engine and Emission Control System Check Engine and Emission Control System Check.

2. DTC check

Check DTC.

Is there DTC(s) other than P2004 and P2006?
YES -
Go to applicable DTC(s).
NO -
Go to Step 3.

3. IMRC valve motor drive circuit (open) and IMRC valve motor drive circuit (close) check

Turn OFF ignition switch and disconnect connectors from IMRC valve actuator and ECM.
Check for proper terminal connection to IMRC valve actuator connector and ECM connectors.
If connections are OK, check that IMRC valve motor drive circuit (open) (A1) and IMRC valve motor drive circuit (close) (A2) are as follows.
- Wiring harness resistance of IMRC valve motor drive circuit (open) and IMRC valve motor drive circuit (close) is less than 3 ohms.
- Insulation resistance between IMRC valve motor drive circuit (open) and vehicle body ground is infinity.
- Insulation resistance between IMRC valve motor drive circuit (close) and vehicle body ground is infinity.
- Insulation resistance of wire harness is infinity between IMRC valve motor drive circuit (open) terminal and each terminal at IMRC valve actuator connector.
- Insulation resistance of wire harness is infinity between IMRC valve motor drive circuit (close) terminal and each terminal at IMRC valve actuator connector.
- Circuit voltage of each IMRC valve motor drive circuit (open) and IMRC valve motor drive circuit (close) is 0 - 1 V with ignition switch in ON position.

Are they in good condition?
YES -
Go to Step 4.
NO -
Repair or replace defective wire harness.

4. IMRC valve and IMRC valve actuator check

Check IMRC valve and IMRC valve actuator. IMRC (Intake Manifold Runner Control) Valve Inspection

Is it in good condition?
YES -
Substitute a known-good ECM and recheck.
NO -
Replace IMRC valve. Intake Manifold Removal and Installation