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Relay Inspection: Inspection: Procedure

  1. RELAY LOCATION 
    GTY487145Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Relay and Fuse Block *b Vehicle Front
    *c IG 1 relay *d A/C relay
    *e Front fog light relay *f Theft-deterrent relay
    *g Brake light relay *h Wiper INT relay
    *i Wiper HI relay *j Horn relay
    *k Starter relay *l ACC relay
    *m Rear window defogger relay *n Blower relay
    *o Fuel pump relay *p Fuel injector relay
    *q Main relay *r Cooling fan relay No. 2
    *s Cooling fan relay No. 1 - -
  2. RELAY INSPECTION 
    RELAY TYPE

    Connector type Part name
    Type A
    • IG1 RELAY
    • A/C RELAY
    • FRONT FOG LIGHT RELAY
    • THEFT-DETERRENT RELAY
    • HORN RELAY
    • STARTER RELAY
    • ACC RELAY
    • REAR WINDOW DEFOGGER RELAY
    • FUEL PUMP RELAY
    • FUEL INJECTOR RELAY
    • MAIN RELAY
    • COOLING FAN RELAY NO. 1
    • COOLING FAN RELAY NO. 2
    Type B
    • BRAKE LIGHT RELAY
    • WIPER INT RELAY
    • WIPER HI RELAY
    Type C
    • BLOWER RELAY
    1. Type A
      1. Remove the relay. (See RELAY LOCATION.)
      2. GTY491977Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Verify the continuity between relay terminals C and D.

        • If it can be verified, replace the relay. (See RELAY LOCATION.)
        • If it cannot be verified, go to the next step.
      3. Verify the continuity between relay terminals E and A.
        • If it can be verified, go to the next step.
        • If it cannot be verified, replace the relay. (See RELAY LOCATION.)
      4. Apply battery voltage to relay terminal E, and connect terminal A to ground.
      5. Verify the continuity between relay terminals C and D.
        • If it cannot be verified, replace the relay. (See RELAY LOCATION.)
    2. Type B
      1. Remove the relay. (See RELAY LOCATION.)
      2. GTY491974Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Verify the continuity between relay terminals C and D.

        • If it can be verified, replace the relay. (See RELAY LOCATION.)
        • If it cannot be verified, go to the next step.
      3. Verify the continuity between relay terminals E and A.
        • If it can be verified, go to the next step.
        • If it cannot be verified, replace the relay. (See RELAY LOCATION.)
      4. Verify the continuity between relay terminals B and D.
        • If it can be verified, go to the next step.
        • If it cannot be verified, replace the relay. (See RELAY LOCATION.)
      5. Apply battery voltage to relay terminal E, and connect terminal A to ground.
      6. Verify the continuity between relay terminals C and D.
        • If it cannot be verified, replace the relay. (See RELAY LOCATION.)
    3. Type C
      1. Remove the relay. (See RELAY LOCATION.)
      2. GTY491975Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Verify the continuity between the relay terminals C and A.

        • If it can be verified, replace the relay. (See RELAY LOCATION.)
        • If it cannot be verified, go to the next step.
      3. Verify the continuity between the relay terminals D and B.
        • If it can be verified, go to the next step.
        • If it cannot be verified, replace the relay. (See RELAY LOCATION.)
      4. Verify the continuity between relay terminals B and D.
        • If it can be verified, go to the next step.
        • If it cannot be verified, replace the relay. (See RELAY LOCATION.)
      5. Apply battery voltage to relay terminal D, and connect terminal B to ground.
      6. Verify the continuity between relay terminals C and A.
        • If it cannot be verified, replace the relay. (See RELAY LOCATION.)
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