RX7 2RTR-1308cc 1.3L MFI (1991)
Electric Load Sensor: Testing and Inspection
Electrical load signals (component "ON") are sent to the ECU from the headlight switch, blower motor switch, fog light switch and rear window
defroster switch.
HEADLIGHT SWITCH
Headlight switch signal can be checked at ECU terminal 3L. With headlights "ON," terminal voltage should be approximately 12V. With headlights
"OFF," voltage should be 0V.
BLOWER MOTOR SWITCH
Blower motor switch signal can be checked at ECU terminal 3O, ignition "ON." With blower switch "OFF," terminal voltage should be approximately
12V. With switch "ON," voltage should be below 2.0V.
FOG LIGHT SWITCH
Fog light switch signal can be checked at ECU terminal 1S. With switch "ON" and engine at idle, terminal voltage should be approximately 12V. With
switch "OFF," voltage should be approximately 0V.
REAR WINDOW DEFROSTER SWITCH
Rear window defroster switch signal can be checked at ECU terminal 3P, ignition "ON." With defroster switch "OFF," terminal should read
approximately 12V. With switch "ON," voltage should be below 2.0V.