Air Fuel Ratio Sensor Relay On-Vehicle Inspection


  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

  2. REMOVE AIR FUEL RATIO SENSOR RELAY (Marking: A/F)

  3. INSPECT A/F RELAY

  4. INSTALL A/F RELAY

  5. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL

Air Fuel Ratio Sensor Relay -- On-Vehicle Inspection



1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.


2. REMOVE AIR FUEL RATIO SENSOR RELAY (Marking: A/F)

  1. Remove the engine room relay block cover.

  1. Remove the relay from the engine room relay block.



3. INSPECT A/F RELAY


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Gr-Fe Engine Control System.Air Fuel Ratio Sensor Relay.Air Fuel Ratio Sensor Relay On-Vehicle Inspection

  1. Measure the resistance of the A/F relay.

    Standard resistance:
    Terminal Connection
    		Specified Condition
    3 - 5
    		10 kΩ or higher
    3 - 5
    		Below 1 Ω
    (when battery voltage is applied to terminals 1 and 2)
    If the result is not as specified, replace the relay.


4. INSTALL A/F RELAY


5. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL