Inspection Procedure

HINT:

When the engine switch is off, the main body ECU may occasionally go into a non-active state called sleep mode. Therefore, before proceeding with the inspection, it is necessary to perform the following step to wake up the ECU:

With the engine switch off, open the driver door. Then (with the engine switch still off) open and close any door several times at 1.5 second intervals.

1. CHECK STEERING LOCK ACTUATOR (IG2 VOLTAGE) 
   1. Measure the voltage according to the value(s) in the table below.

      Standard Voltage 

      VOLTAGE SPECIFICATION
      
      

      Tester Connection	Switch Condition	Specified Condition
      L33-6 (IG2) - L33-2 (SGND)	Engine switch on (IG)	11 to 14 V
      L33-6 (IG2) - L33-2 (SGND)	Engine switch off	Below 1 V

      Fig 1: Identifying L33 Steering Lock Actuator Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: REPLACE STEERING LOCK ACTUATOR 

   NG: Go to next step 

2. INSPECT FUSE (P-J/B, P IG2) 
   1. Remove the P-J/B fuse from the engine room No. 2 junction block.
   2. Remove the P IG2 fuse from the passenger side junction block.
   3. Measure the resistance of the fuses.

      Standard Resistance 

      RESISTANCE SPECIFICATION
      
      

      Tester Connection	Condition	Specified Condition
      P-J/B fuse	Always	Below 1 Ω
      P IG2 fuse	Always	Below 1 Ω

   NG: REPLACE FUSE 

   OK: Go to next step 

3. 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.
      Fig 2: Identifying Ignition Relay No. 2

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance 

      RESISTANCE SPECIFICATION
      
      

      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

   NG: REPLACE IG2 RELAY 

   OK: Go to next step 

4. CHECK HARNESS AND CONNECTOR (IG2 RELAY - MAIN BODY ECU AND BODY GROUND) 
   Fig 3: Identifying L12 Main Body ECU Connector And Ignition Relay No. 2

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

      Standard Resistance 

      RESISTANCE SPECIFICATION
      
      

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

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: Go to next step 

5. CHECK MAIN BODY ECU (IG2D OPERATION) 
   Fig 4: Identifying Ignition Relay No. 2

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

      Standard Voltage 

      VOLTAGE SPECIFICATION
      
      

      Tester Connection	Switch Condition	Specified Condition
      Relay block Ignition relay No. 2 terminal 1 - Body ground	Engine switch on (IG)	11 to 14 V

   NG: REPLACE MAIN BODY ECU 

   OK: Go to next step 

6. CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU - BATTERY) 
   Fig 5: Identifying L33 Steering Lock ECU Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Disconnect the L33 steering lock ECU connector.
   2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage 

      VOLTAGE SPECIFICATION
      
      

      Tester Connection	Switch Condition	Specified Condition
      L33-6 (IG2) - Body ground	Engine switch on (IG)	11 to 14 V

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: REPLACE STEERING LOCK ACTUATOR