DTC P2004: Intake Manifold Runner Control Stuck Open (Bank 1); DTC P2006: Intake Manifold Runner Control Stuck Closed (Bank 1): Procedure

1. Connect Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the tester on.
4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
5. Read DTCs.

   Result

   Display (DTC Output)	Proceed to
   P2004 or P2006	A
   P2004 or P2006 and other DTCs	B

   HINT: 

   If any DTCs other than P2004 or P2006 are output, troubleshoot those DTCs first.

B → GO TO DTC CHART 

A: Go to next step 

1. When the engine switch is turned from off to on (IG), check that the SCV links move.

   OK

   SCV links move.

OK → See step   5 

NG: Go to next step 

NG → REPLACE INTAKE MANIFOLD 

OK: Go to next step 

1. Disconnect the E6 ECM connector.
   Fig 1: Identifying Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the E53 DC motor for SCV connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance (Check for open)

   Tester Connection	Specified Condition
   IA1- (E6-1) - E53-2	Below 1 Ω
   IA1+ (E6-2) - E53-1	Below 1 Ω

   Standard resistance (Check for short)

   Tester Connection	Specified Condition
   IA1- (E6-1) or E53-2 - Body ground	10 kΩ or higher
   IA1+ (E6-2) or E53-1 - body ground	10 kΩ or higher

4. Reconnect the ECM connector.
5. Reconnect the DC motor for SCV connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Connect Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the tester on.
4. Clear DTCs.
5. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
6. Read DTCs.

   Result

   Display (DTC Output)	Proceed to
   P2004 or P2006	A
   No DTC	B

B → CHECK FOR INTERMITTENT PROBLEMS 

A → REPLACE ECM