Diagnostic procedure

DTC P2004 DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED Has FREEZE FRAME DATA been recorded?	Yes	Go to next step.
1		No	Record FREEZE FRAME DATA on repair order, then go to next step.
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY Check for related Technical Service Bulletin(s) repair information availability. Is any related repair information available?	Yes	Perform repair or diagnosis according to available repair information. If vehicle is not repaired, go to next step.
2		No	Go to next step.
3	CLASSIFY INTERMITTENT CONCERN OR CONTINUOUS CONCERN Clear the DTC from the PCM memory using the WDS or equivalent. Drive the vehicle under the following conditions: Engine coolant temperature is above 63°C {145 °F} Engine speed: below 3,750 rpm Throttle opening angle is below as followings Engine speed below 1,500 rpm: above 35% Engine speed between 1,500-2,500 rpm: between 25-35% Engine speed above 2,500: below 25% Is the PENDING CODE for this DTC present?	Yes	Go to next step.
3		No	Intermittent concern exists. Go to INTERMITTENT CONCERN TROUBLESHOOTING procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING .)
4	VERIFY STORED OTHER DTCS Verify stored DTCs using WDS or equivalent. Is DTC P2088 or P2089 present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE )
4		No	Go to next step.
5	INSPECT VARIABLE TUMBLE SHUTTER VALVE SWITCH CONNECTOR AND VARIABLE TUMBLE SOLENOID VALVE CONNECTOR FOR POOR CONNECTION Turn the ignition switch off. Inspect for poor connection (such as damaged/pulled-out pins, corrosion). Is there any malfunction?	Yes	Repair or replace the terminal, then go to Step 15.
5		No	Go to the next step.
6	INSPECT VARIABLE TUMBLE SHUTTER VALVE SWITCH SIGNAL CIRCUIT FOR OPEN CIRCUIT Disconnect the variable tumble shutter valve switch connector. Inspect for continuity between the variable tumble shutter valve switch terminal C (wiring harness side) and the PCM terminal 2AE (wiring harness side). Is there continuity?	Yes	Go to the next step.
6		No	Repair or replace the wiring harness for open circuit, then go to Step 15.
7	INSPECT VARIABLE TUMBLE SHUTTER VALVE SWITCH SIGNAL CIRCUIT FOR SHORT TO POWER Connect the variable tumble shutter valve switch connector. Turn the ignition switch to the ON position (Engine off). Measure the voltage between PCM terminal 2AE (wiring harness side) and body ground. Is the voltage B+ ?	Yes	Repair or replace the wiring harness for open circuit, then go to Step 15.
7		No	Go to the next step.
8	INSPECT PCM CONNECTOR FOR POOR CONNECTION Turn the ignition switch off. Disconnect the PCM connector. Inspect for poor connection at PCM terminals (such as damaged/pulled-out pins, corrosion). Is there any malfunction?	Yes	Repair the terminal, then go to Step 15.
8		No	Go to the next step.
9	INSPECT VARIABLE TUMBLE SOLENOID VALVE Perform "VARIABLE TUMBLE SOLENOID VALVE INSPECTION". (See VARIABLE TUMBLE SOLENOID VALVE INSPECTION [LF] or VARIABLE TUMBLE SOLENOID VALVE INSPECTION [L3] .) Is the variable tumble solenoid valve okay?	Yes	Go to next step.
9		No	Replace the variable tumble solenoid valve, then go to Step 15.
10	INSPECT VARIABLE TUMBLE SHUTTER VALVE ACTUATOR Perform "VTC SHUTTER VALVE ACTUATOR INSPECTION". (See VARIABLE TUMBLE SHUTTER VALVE ACTUATOR INSPECTION [LF] or VARIABLE TUMBLE SHUTTER VALVE ACTUATOR INSPECTION [L3] .) Is the variable tumble shutter valve actuator okay?	Yes	Go to next step.
10		No	Replace the Intake manifold, then go to Step 15.
11	INSPECT VARIABLE TUMBLE SHUTTER VALVE SWITCH Perform "VARIABLE TUMBLE SHUTTER VALVE SWITCH INSPECTION". (See VARIABLE TUMBLE SHUTTER VALVE SWITCH INSPECTION .) Is the variable tumble shutter valve switch normal?	Yes	Go to the next step.
11		No	Repair or replace the wiring harness for open circuit, then go to Step 15.
12	INSPECT VARIABLE TUMBLE SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO POWER Connect variable tumble solenoid valve connector. Turn the ignition switch to the ON position (Engine off). Measure the voltage between PCM terminal 2AI (wiring harness side) and body ground. Is the voltage B+ ?	Yes	Repair or replace the wiring harness for open circuit, then go to Step 15.
12		No	Go to the next step.
13	INSPECT VARIABLE TUMBLE SOLENOID VALVE CONTROL CIRCUIT FOR OPEN CIRCUIT Inspect for continuity between variable tumble solenoid valve terminal B (wiring harness-side) and PCM terminal 2AI (wiring harness side). Is there continuity?	Yes	Go to the next step.
13		No	Repair or replace the wiring harness for open circuit, then go to Step 15.
14	VERIFY CONNECTION OF VACUUM HOSE ROUTING Verify that the vacuum hoses are connected properly. (See INTAKE-AIR SYSTEM MANIFOLD VACUUM INSPECTION [LF] or INTAKE-AIR SYSTEM MANIFOLD VACUUM INSPECTION [L3] .) Are the vacuum hoses connected properly?	Yes	Go to next step.
14		No	Connect the vacuum hoses properly, then go to next step.
15	VERIFY TROUBLESHOOTING OF DTC P2004 COMPLETED Make sure to reconnect all disconnected connectors. Start the engine. Clear the DTC from the PCM memory using the WDS or equivalent. Start the engine. Drive the vehicle under following conditions: Engine coolant temperature is above 63 °C {145 °F}. Engine speed: below 3,750 rpm Throttle opening angle is below as followings Engine speed below 1,500 rpm: above 35% Engine speed between 1,500-2,500 rpm: between 25-35% Engine speed above 2,500: below 25% Is the PENDING CODE for this DTC present?	Yes	Replace the PCM, then go to next step. (See PCM REMOVAL/INSTALLATION .)
15		No	Go to next step.
16	VERIFY AFTER REPAIR PROCEDURE Perform "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE ) Is any DTC present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE )
16		No	Troubleshooting completed.