General Precautions of EFI System Maintenance
F-80
101. P0704 Improper Clutch Pedal Switch Signal
Description about Malfunction Cause:
After the start of engine, circuit control module of ECU performs monitoring over the brake switch circuit
voltage, and if the voltage exceeds the reasonable voltage range preset in ECU, this malfunction is reported.
Schematic Circuit:
Malfunction Diagnostic Guide:
Required Equipment: (Diagnostic Instrument with EOBD Diagnostic Function, Digital Multimeter, and
Correct Circuit Diagram)
Step I: Use diagnostic instrument to read the malfunction information
Read Result I Read Result II
P-CODE Present P-CODE Present
P0704 P0704
The malfunction has been confirmed, and the
following problems may possibly exist
1) Circuit connected to Pin 74# of ECU is open,
short to ground or power supply.
The malfunction is not ultimately confirmed and it
may possibly be a random malfunction. Inspect the
following items:
1) Resistance connected to Pin 68# of ECU
102. P1336 Torque Limit Function of Electronic Throttle Security Monitoring
Description about Malfunction Cause:
ECU performs continuously monitoring over electronic throttle, including control over increase or decrease of
torque. When ECU determines that the response of electronic throttle is due to outside interference rather than
actual intention of driver, the limiting of engine torque is applied to ensure safe running of vehicle.
Clutch switch
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