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 junction block assembly, inspect the ECU-IG NO. 2, ECU-IG NO. 3 and S/HTR F/R fuses.

   1. 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 - 3C-15	Battery voltage not applied to terminals 3C-43 and -3D-9	10 kΩ or higher
         	Battery voltage applied to terminals 3C-43 and 3D-9	Below 1 Ω

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

   2. 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-42	Battery voltage not applied to terminals 3C-43 and -3D-9	10 kΩ or higher
         	Battery voltage applied to terminals 3C-43 and 3D-9	Below 1 Ω

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

   3. 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 not applied to terminals 3C-43 and -3D-9	10 kΩ or higher
         	Battery voltage applied to terminals 3C-43 and 3D-9	Below 1 Ω

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

2. INSPECT EFI-MAIN RELAY (EFI-MAIN)

   

   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
      	Battery voltage applied to terminals 1 and 2	Below 1 Ω

      If the result is not as specified, replace the EFI-MAIN relay.

3. INSPECT A/F RELAY (A/F)

   

   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
      	Battery voltage applied to terminals 1 and 2	Below 1 Ω

      If the result is not as specified, replace the A/F relay.

4. INSPECT IGNITION NO. 2 RELAY (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
      	Battery voltage applied to terminals 1 and 2	Below 1 Ω

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