Inspection Procedure

HINT:

If the vehicle is in key cancel mode, change to normal mode (see CUSTOMIZE PARAMETERS ).

1. CHECK WHETHER DTC OUTPUT RECURS 
   1. Clear the DTCs (see DTC CHECK/CLEAR  ).

      HINT:

      After all DTCs are cleared, check if the trouble occurs again 5 seconds after the engine switch is turned on (IG).

   2. Check for DTCs again.

      OK: No DTC is output. 

      NG:  GO TO DTC CHART 

      OK: Go to next step. 

2. CHECK ENGINE SWITCH (SWITCH CONDITION) 
   1. Ensure the key is inside the cabin.
   2. Check that the engine switch indicator illuminates in green when the shift lever is in P or N and the brake pedal is depressed.

      OK: Engine switch indicator illuminates in green. 

      NG: GO TO ROOM OSCILLATOR DOES NOT RECOGNIZE KEY  (See ROOM OSCILLATOR DOES NOT RECOGNIZE KEY )

      OK: Go to next step. 

3. READ VALUE USING TECHSTREAM (RELAY MONITOR) 
   1. Use the Data List to check if the relay monitor is functioning properly.

      Main Body 

      ITEM RANGE REFERENCE
      
      

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      IG1 Relay Monitor (Outside)	D-IG1 relay outer relay monitor/ON or OFF	ON: Engine switch on (IG) OFF: Engine switch off	-
      IG1 Relay Monitor (Inside)	D-IG1 relay inner relay monitor/ON or OFF	ON: Engine switch on (IG) OFF: Engine switch off	-
      IG2 Relay Monitor (Outside)	IG2 outer relay monitor/ON or OFF	ON: Engine switch on (IG) OFF: Engine switch off	-
      IG2 Relay Monitor (Inside)	IG2 inner relay monitor/ON or OFF	ON: Engine switch on (IG) OFF: Engine switch off	-
      ACC Relay Monitor	D-ACC relay monitor/ON or OFF	ON: Engine switch on (IG) OFF: Engine switch off	-

      OK: ON is displayed on the Techstream screen. 

      NG:  Go to step  7

      OK: Go to next step. 

4. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU) 
   Fig 1: Identifying Main Body ECU Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Disconnect the L13, DF and DA main body ECU connectors.
   2. Measure the resistance and voltage according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE REFERENCE
      
      

      Tester Connection	Condition	Specified Condition
      L13-3 (IG1D) - DA-32	Always	Below 1 Ω
      L13-3 (IG1D) or DA-32 - Body ground	Always	10 kΩ or higher
      L13-22 (ACCD) - DA-19	Always	Below 1 Ω
      L13-22 (ACCD) or DA-19 - Body ground	Always	10 kΩ or higher
      DA-40 (GND1) - Body ground	Always	Below 1 Ω

      Standard voltage 

      VOLTAGE SPECIFICATION
      
      

      Tester Connection	Condition	Specified Condition
      DF-1 - Body ground	Always	11 to 14 V

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: Go to next step. 

5. INSPECT IGNITION RELAY NO. 2 (IG2) 
   1. Remove the ignition relay No. 2 from the engine room No. 2 junction block.
   2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE REFERENCE
      
      

      Tester Connection	Condition	Specified Condition
      3 - 5	When battery voltage is not applied to terminals 1 and 2	10 kΩ or higher
      3 - 5	When battery voltage is applied to terminals 1 and 2	Below 1 Ω

      Fig 2: Inspecting Ignition Relay No. 2

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPLACE IGNITION RELAY NO. 2 (IG2) 

      OK: Go to next step. 

6. CHECK HARNESS AND CONNECTOR (NO. 2 RELAY BLOCK - MAIN BODY ECU AND STEERING LOCK ECU) 
   Fig 3: Identifying Main Body ECU Connector Terminal And Steering Lock ECU Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Remove the ignition relay No. 2 from the engine room No. 2 junction block.
   2. Disconnect the L12 main body ECU connector.
   3. Disconnect the L33 steering lock ECU connector.
   4. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE REFERENCE
      
      

      Tester Connection	Condition	Specified Condition
      L12-11 (IG2D) - Relay block Ignition relay No. 2 terminal 1	Always	Below 1 Ω
      L12-11 (IG2D) or Relay block ignition relay No. 2 terminal 1 - Body ground	Always	10 kΩ or higher
      Relay block ignition relay No. 2 terminal 2 - Body ground	Always	Below 1 Ω
      L33-6 (IG2) - Relay block Ignition relay No. 2 terminal 3	Always	Below 1 Ω
      L33-6 (IG2) or Relay block ignition relay No. 2 terminal 3 - Body ground	Always	10 kΩ or higher

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: REPLACE MAIN BODY ECU 

7. INSPECT ENGINE SWITCH 
   1. Remove the engine switch (see REMOVAL  ).
   2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE REFERENCE
      
      

      Tester Connection	Switch Condition	Specified Condition
      7 (SS1) - 5 (GND)	Pushed	Below 1 Ω
      2 (SS2) - 5 (GND)	Pushed	Below 1 Ω
      7 (SS1) - 5 (GND)	Not pushed	10 kΩ or higher
      2 (SS2) - 5 (GND)	Not pushed	10 kΩ or higher

      Fig 4: Identifying Engine Switch Connector Terminal

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPLACE ENGINE SWITCH (See  REMOVAL   ) 

      OK: Go to next step. 

8. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - ENGINE SWITCH) 
   Fig 5: Identifying Main Body ECU Connector Terminal And Engine Switch Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Disconnect the L13 main body ECU connector.
   2. Disconnect the L36 engine switch connector.
   3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE REFERENCE
      
      

      Tester Connection	Condition	Specified Condition
      L36-7 (SS1) - L13-17 (SSW1)	Always	Below 1 Ω
      L36-2 (SS2) - L13-16 (SSW2)	Always	Below 1 Ω
      L36-5 (GND) - Body ground	Always	Below 1 Ω
      L36-7 (SS1) or L13-17 (SSW1) - Body ground	Always	10 kΩ or higher
      L36-2 (SS2) or L13-16 (SSW2) - Body ground	Always	10 kΩ or higher

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: Go to next step. 

9. INSPECT FUSE (AM2) 
   1. Remove the AM2 fuse from the passenger side junction block.
   2. Check the resistance of the fuse.

      Standard resistance 

      RESISTANCE REFERENCE
      
      

      Tester Connection	Condition	Specified Condition
      AM2 fuse	Always	Below 1 Ω

      NG: REPLACE FUSE (AM2) 

      OK: Go to next step. 

10. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND BODY GROUND) 
    Fig 6: Identifying Main Body ECU Connector Terminal

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the L13, L12 and DA main body ECU connectors.
    2. Measure the voltage and resistance according to the value(s) in the table below.

       Standard voltage 

       VOLTAGE SPECIFICATION
       
       

       Tester Connection	Condition	Specified Condition
       L13-6 (AM1) - Body ground	Always	11 to 14 V
       L12-1 (AM2) - Body ground	Always	11 to 14 V

       Standard resistance 

       RESISTANCE REFERENCE
       
       

       Tester Connection	Condition	Specified Condition
       DA-40 (GND1) - Body ground	Always	Below 1 Ω

       NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

       OK: REPLACE MAIN BODY ECU