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, and other data from the time the malfunction occurred.

1. INSPECT FUSE (ETCS) 
   1. Remove the ETCS fuse from the engine room No. 1 relay block (R/B).
   2. Measure the resistance of the ETCS fuse.

      Standard: Below 1 Ω 

      If the fuse is open, replace the fuse.

      Fig 1: Locating ETCS Fuse

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: CHECK FOR SHORT IN ALL HARNESS AND COMPONENTS CONNECTED FUSE 
   2. OK: GO TO NEXT STEP. 
2. READ VALUE OF HAND-HELD TESTER (+BM VOLTAGE) 
   1. Connect the hand-held tester to the DLC 3.
   2. Turn the ignition switch ON.
   3. Select theitem "DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / +BM"

      Standard: 9 to 14 V 

   1. OK: CHECK FOR INTERMITTENT PROBLEM (See  CHECK FOR INTERMITTENT PROBLEMS   ) 
   2. NG: Go to next step. 
3. CHECK WIRE HARNESS (ECM - BATTERY - ETCS FUSE) 
   1. Check the wire harness between the ETCS fuse, the battery positive terminal and the ECM.
      1. Remove the ETCS fuse from the engine room No. 1 R/B.
      2. Disconnect the E6 ECM connector.
      3. Measure the resistance of the wire harness side connectors.
         Fig 2: Specific Condition Chart

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

         Standard: 

         Fig 3: Checking Wire Harness (ECM - Battery - ETCS Fuse) (1 Of 2)

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
         Fig 4: Checking Wire Harness (ECM - Battery - ETCS Fuse) (2 Of 2)

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
   2. OK: Go to next step. 

   CHECK ENGINE ROOM R/B