Inspection Procedure

HINT:

Read freeze frame data using the hand-held tester. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, as well as other data from the time when a malfunction occurred.

1. Check any other DTC output (in addition to DTC P2111 or P2112). 

   PREPARATION: 

   1. Connect a hand-held tester to the DLC3.
   2. Turn the ignition switch to ON and turn the tester ON.
   3. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.

   CHECK: 

   1. Read DTCs.

   Result: 

   DTC OUTPUT DESCRIPTION
   
   

   Display (DTC Output)	Proceed To
   P2111 and/or P2112	A
   P2111 and/or P2112 and other DTCs	B

   HINT:

   If any DTCs other than P2111 and/or P2112 are output, troubleshoot those DTCs first.

   1. B: Go to  DIAGNOSTIC TROUBLE CODE CHART  
   2. A: Go to next step 
2. Visually check throttle valve. 

   PREPARATION: 

   Remove the intake air connector.

   CHECK: 

   Check whether or not a foreign body is caught between the throttle valve and housing. Also, check if the valve can open and close smoothly.

   OK: The throttle valve is not contaminated by foreign objects and can move smoothly. 

   1. NG: Remove foreign body and clean throttle body. 
   2. OK: Go to next step 
3. Check throttle control motor. 

   PREPARATION: 

   Disconnect the throttle control motor and sensor connector.

   CHECK: 

   Measure the resistance between terminals of the throttle control motor.

   OK: 

   Standard: 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   M+ (T14-2) - M- (T14-1)	0.3 to 100 Ω (20°C (68°F))

   Fig 1: Identifying Throttle Control Motor And Sensor Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: Replace throttle body (See  THROTTLE BODY  ). 
   2. OK: Go to next step 
4. Check for open and short in harness and connector between ECM and throttle control motor. 

   PREPARATION: 

   1. Disconnect the T14 throttle control motor and sensor connector.
   2. Disconnect the E8 ECM connector.

   CHECK: 

   Measure the resistance between the wire harness side connectors.

   Fig 2: Identifying T14 Throttle Control Motor And Sensor Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: 

   Standard: 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   M+ (T14-2) - M+ (E8-3)	Below 1 Ω
   M- (T14-1) - M- (E8-2)	Below 1 Ω
   M+ (T14-2) or M+ (E8-3) -Body ground	10 kΩ or higher
   M- (T14-1) or M- (E8-2) -Body ground	10 kΩ or higher

   Fig 3: Identifying E8 ECM Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: Repair or replace harness or connector. 
   2. OK:  CHECK FOR INTERMITTENT PROBLEMS