TROUBLESHOOTING GUIDE - ENGINE CONTROL OPERATION CHART - Switches (continued)
F-13spec tableEngine Control Operation Chart - Switches
CRANKING
Throttle Sensor - Power TerminalSEND SIGNAL TO ECU WHEN PEDAL DEPRESSED
Throttle Sensor - Idle TerminalSIGNAL HAS NO EFFECT ON ECU
A/C SwitchSIGNAL HAS NO EFFECT ON ECU
Neutral and Clutch SwitchesSIGNAL HAS NO EFFECT ON ECU
Stoplight SwitchSIGNAL HAS NO EFFECT ON ECU
Headlight SwitchSIGNAL HAS NO EFFECT ON ECU
Blower Control SwitchSIGNAL HAS NO EFFECT ON ECU
Cooling Fan SwitchSIGNAL HAS NO EFFECT ON ECU
P/S Pressure SwitchSIGNAL HAS NO EFFECT ON ECU
Ignition Switch - Start PositionSENDS SIGNAL TO ECU
Test TerminalSIGNAL HAS NO EFFECT ON ECU
COLD START
Throttle Sensor - Power Terminal
Throttle Sensor - Idle TerminalLOW VOLTAGE SIGNAL TO ECU (BELOW 1.5V)
A/C Switch
Neutral and Clutch SwitchesIN NEUTRAL: LOW VOLTAGE SIGNAL TO ECU (APPROX. 0V)
Stoplight Switch
Headlight Switch
Blower Control Switch
Cooling Fan Switch
P/S Pressure Switch
Ignition Switch - Start Position
Test Terminal
COLD DRIVEAWAY / WARM DRIVEAWAY / HOT CRUISE
Throttle Sensor - Power TerminalHIGH VOLTAGE SIGNAL TO ECU (APPROX. 5V)
Throttle Sensor - Idle TerminalHIGH VOLTAGE SIGNAL TO ECU (APPROX. 5V)
A/C SwitchA/C SWITCH ON: SENDS SIGNAL TO ECU (APPROX. 0V) / A/C SWITCH OFF: NO SIGNAL TO ECU (APPROX. 12V)
Neutral and Clutch SwitchesDRIVING IN ANY GEAR: HIGH VOLTAGE SIGNAL TO ECU (APPROX. 12V)
Stoplight SwitchNO SIGNAL TO ECU (BELOW 1.5V)
Headlight SwitchHEADLIGHT SWITCH ON: HIGH VOLTAGE SIGNAL TO ECU (APPROX. 12V) / HEADLIGHT SWITCH OFF: LOW VOLTAGE SIGNAL TO ECU (APPROX. 12V)
Blower Control SwitchBLOWER CONTROL SWITCH ON: LOW VOLTAGE SIGNAL TO ECU (APPROX. 0V) / BLOWER CONTROL SWITCH OFF: HIGH VOLTAGE SIGNAL TO ECU (APPROX. 12V)
Cooling Fan SwitchCOOLING FAN SWITCH ON: LOW VOLTAGE SIGNAL TO ECU (APPROX. 0V) / COOLING FAN SWITCH OFF: HIGH VOLTAGE SIGNAL TO ECU (APPROX. 12V)
P/S Pressure SwitchSTEERING WHEEL TURNED: LOW VOLTAGE SIGNAL TO ECU (APPROX. 0V) / STEERING WHEEL STRAIGHT AHEAD: HIGH VOLTAGE SIGNAL TO ECU (APPROX. 12V)
Ignition Switch - Start PositionNO SIGNAL TO ECU (BELOW 1.5V)
Test TerminalTERMINAL NOT GROUNDED: HIGH VOLTAGE SIGNAL TO ECU (APPROX. 12V)
DECELERATION / HOT CURB IDLE
Throttle Sensor - Power TerminalLOW VOLTAGE SIGNAL TO ECU (APPROX. 0V)
Throttle Sensor - Idle Terminal
A/C Switch
Neutral and Clutch Switches
Stoplight Switch
Headlight Switch
Blower Control Switch
Cooling Fan Switch
P/S Pressure Switch
Ignition Switch - Start Position
Test Terminal
HOT ACCELERATION
Throttle Sensor - Power TerminalHIGH VOLTAGE SIGNAL TO ECU (APPROX. 5V)
Throttle Sensor - Idle TerminalLOW VOLTAGE SIGNAL TO ECU (APPROX. 0V)
A/C Switch
Neutral and Clutch SwitchesIN NEUTRAL: LOW VOLTAGE SIGNAL TO ECU (APPROX. 0V)
Stoplight SwitchBRAKE PEDAL DEPRESSED: SENDS SIGNAL TO ECU (APPROX. 12V)
Headlight Switch
Blower Control Switch
Cooling Fan Switch
P/S Pressure Switch
Ignition Switch - Start Position
Test TerminalLOW VOLTAGE SIGNAL TO ECU WHEN CONNECTOR GROUNDED (BELOW 1.5V)
HOT ENGINE SHUTDOWN
Throttle Sensor - Power TerminalOFF
Throttle Sensor - Idle TerminalOFF
A/C SwitchOFF
Neutral and Clutch SwitchesOFF
Stoplight SwitchOFF
Headlight SwitchOFF
Blower Control SwitchOFF
Cooling Fan SwitchOFF
P/S Pressure SwitchOFF
Ignition Switch - Start PositionOFF
Test TerminalOFF
NOTE
05U0FX-010