General Precautions of EFI System Maintenance
F-78
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
P0692
P0692
Maintenance tips:
The malfunction has been confirmed, and the
following problems may possibly exist
1) Circuit connected with ECU Pin 50# short to
circuit between cooling fan relay Pin 86# and
main relay.
2) Circuit connected with ECU Pin 50# short to
circuit between cooling fan relay Pin 30# and
positive battery pole.
3) Circuit connected with ECU 50# 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) Examine resistance between circuit connected
with ECU Pin 50# and circuit between cooling
fan relay Pin 86# and main relay.
2) Examine resistance between circuit connected
with ECU Pin 50# and circuit between cooling
fan relay Pin 86# and positive battery pole.
3) Examine resistance between circuit connected
with ECU Pin 68# and other power circuit.
99. P0693 Control Circuit of Cooling Fan Relay Short to Ground (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 in the mode of circuit short to ground, it is determined to be the malfunction
of cooling fan circuit short to ground.
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
P0693
P0693
Battery
Main relay
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