DTC P2118 Throttle Actuator Control Motor Current Range / Performance: Wiring Diagram

Fig 1: Identifying Throttle Actuator System Wiring Diagram

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

Read freeze frame data using the intelligent 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, and other data from the time the malfunction occurred.

1. INSPECT FUSE (ETCS) 
   1. Remove the ETCS fuse from the engine room No. 2 relay block.
   2. Measure the resistance of the fuse.
      Fig 2: Identifying ETCs Fuse From Engine Room Relay Block

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance: 

      Below 1 Ω 

   NG : REPLACE FUSE 

   OK : GO TO NEXT STEP. 

2. READ DATA LIST (+BM VOLTAGE) 
   1. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
   2. Turn the engine switch on (IG).
   3. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / +BM.
      Fig 3: Identifying Intelligent Tester To CAN VIM

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard voltage: 

      9 to 14 V 

   OK : CHECK FOR INTERMITTENT PROBLEM 

   NG : GO TO NEXT STEP. 

3. CHECK WIRE HARNESS (ECM - ETCS FUSE, ETCS FUSE - BATTERY) 
   1. Remove the ETCS fuse from the engine room No. 2 relay block.
   2. Disconnect the E8 ECM connector.
   3. Measure the resistance of the wire harness side connectors.
      Fig 4: Identifying ETCS Fuse From Engine Room Relay Block

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION CHART
      
      

      Tester Connection	Specified Condition
      Relay block ETCS fuse terminal 1 - Battery positive (+) terminal	Below 1 Ω
      Relay block ETCS fuse terminal 2 - E8-5 (+BM)	Below 1 Ω
      Relay block ETCS fuse terminal 1 or Battery positive (+) terminal - Body ground	10 kΩ or higher
      Relay block ETCS fuse terminal 2 or E8-5 (+BM) - Body ground	10 kΩ or higher

   NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

   OK : REPLACE ECM