RELAY ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

   

   *1	Main Body ECU	-	-
   *a	Component without harness connected (Instrument Panel Junction Block Assembly)	*b	Component without main body ECU connected (Instrument Panel Junction Block Assembly)

   Note

   Before performing the relay inspections for the relays of the instrument panel junction block assembly, inspect the ECU-IG No. 1, ECU-IG No. 3 and S-HTR RH fuses.

   
   

   1. Remove the instrument panel junction block assembly.

      
      

      • for LHD

        Click here

      • for RHD

        Click here

   2. Remove the main body ECU from the instrument panel junction block assembly.

   3. Inspect the IG1 No. 1 relay.

      
      

      1. Measure the resistance according to the value(s) in the table below.

         Standard Resistance
         Tester Connection Condition Specified Condition 3A-1 - 3B-50 Battery voltage is not applied to terminals 3C-43 and main body ECU-11 10 kΩ or higher 3A-1 - 3B-50 Battery voltage is applied to terminals 3C-43 and main body ECU-11 Below 1 Ω

         If the result is not as specified, replace the instrument panel junction block assembly.

   4. Inspect the IG1 No. 2 relay.

      
      

      1. Measure the resistance according to the value(s) in the table below.

         Standard Resistance
         Tester Connection Condition Specified Condition 3A-1 - 3B-19 Battery voltage is not applied to terminals 3C-43 and main body ECU-11 10 kΩ or higher 3A-1 - 3B-19 Battery voltage is applied to terminals 3C-43 and main body ECU-11 Below 1 Ω

         If the result is not as specified, replace the instrument panel junction block assembly.

   5. Inspect the IG1 No. 3 relay.

      
      

      1. Measure the resistance according to the value(s) in the table below.

         Standard Resistance
         Tester Connection Condition Specified Condition 3A-1 - 3C-3 Battery voltage is not applied to terminals 3C-43 and main body ECU-11 10 kΩ or higher 3A-1 - 3C-3 Battery voltage is applied to terminals 3C-43 and main body ECU-11 Below 1 Ω

         If the result is not as specified, replace the instrument panel junction block assembly.

   6. Install the main body ECU to the instrument panel junction block assembly.

   7. Install the instrument panel junction block assembly.

      
      

      • for LHD

        Click here

      • for RHD

        Click here

2. INSPECT IGNITION RELAY NO. 2 (IG2)

   

   
   

   1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition 3 - 5 Battery voltage not applied to terminals 1 and 2 10 kΩ or higher 3 - 5 Battery voltage applied to terminals 1 and 2 Below 1 Ω

      If the result is not as specified, replace the ignition relay No. 2.

3. INSPECT CIRCUIT OPENING RELAY (C/OPN)

   
   

   1. 

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition 3 - 5 Battery voltage not applied to terminals 1 and 2 10 kΩ or higher 3 - 5 Battery voltage applied to terminals 1 and 2 Below 1 Ω

      If the result is not as specified, replace the circuit opening relay.

4. INSPECT EFI MAIN NO. 1 RELAY (EFI-MAIN NO. 1)

   

   
   

   1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition 3 - 5 Battery voltage not applied to terminals 1 and 2 10 kΩ or higher 3 - 5 Battery voltage applied to terminals 1 and 2 Below 1 Ω

      If the result is not as specified, replace the EFI main No. 1 relay.

5. INSPECT EFI MAIN NO. 2 RELAY (EFI-MAIN NO. 2)

   

   
   

   1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition 3 - 5 Battery voltage not applied to terminals 1 and 2 10 kΩ or higher 3 - 5 Battery voltage applied to terminals 1 and 2 Below 1 Ω

      If the result is not as specified, replace the EFI main No. 2 relay.