General Precautions of EFI System Maintenance
F-79
Maintenance tips:
The malfunction has been confirmed, and the
following problems may possibly exist
1) Circuit between ECU Pin 68# and cooling fan
relay Pin 85# short to ground.
Maintenance tips:
The malfunction is not ultimately confirmed and it
may possibly be a random malfunction. Inspect the
following items:
1) Examine resistance of circuit between ECU Pin
68# and cooling fan relay Pin 85#
100. P0694 Control Circuit of Cooling Fan Relay Short to Power Supply (High Speed)
Description about Malfunction Cause:
After engine has been started, circuit control module of ECU examines voltage of cooling fan circuit; if the
value complies with the voltage of short-with-power malfunction mode, it is determined to be the malfunction
of cooling fan circuit short to power supply.
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
SVS lamp On P-CODE Present SVS lamp Off P-CODE Present
P0694
P0694
Maintenance tips:
The malfunction has been confirmed, and the
following problems may possibly exist
1) Circuit connected with ECU Pin 68# short to
circuit between cooling fan relay Pin 86# and
power supply main relay.
2) Circuit connected with ECU Pin 68# short to
circuit between cooling fan relay Pin 30# and
positive battery pole.
3) Circuit connected with ECU Pin 68# short to
other power circuit.
Maintenance tips:
The malfunction is not ultimately confirmed and it
may possibly be a random malfunction. Inspect the
following items:
1) Resistance between circuit connected with ECU
Pin 68# and circuit between cooling fan relay
Pin 86# and power supply main relay.
2) Resistance between ECU Pin 68# and positive
battery pole.
3) Resistance between ECU Pin 68# and other
power circuit.
Battery
Main relay
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