Component Function Check
1.CHECK COOLING FAN FUNCTION
With CONSULT
Is the inspection result normal? YES >> INSPECTION END
NO >> Proceed to EC-458, "Diagnosis Procedure".
Diagnosis Procedure
1.CHECK COOLING FAN RELAY POWER SUPPLY CIRCUIT
Is the inspection result normal? YES >> GO TO 2.
NO >> Perform trouble diagnosis for power supply circuit.
2.CHECK COOLING FAN MOTOR CIRCUIT-1
Check the voltage between cooling fan relays-2, -3 harness connectors and ground.
Is the inspection result normal? YES >> GO TO 3.
NO >> GO TO 4.
3.CHECK COOLING FAN RELAY OUTPUT SIGNAL CIRCUIT
Is the inspection result normal? YES >> GO TO 6.
NO >> Repair or replace error-detected parts.
4.CHECK COOLING FAN MOTOR POWER SUPPLY CIRCUIT
Is the inspection result normal? YES >> GO TO 5.
NO >> Perform trouble diagnosis for power supply circuit.
5.CHECK COOLING FAN MOTOR CIRCUIT-2
Is the inspection result normal? YES >> GO TO 11.
NO >> Repair or replace error-detected parts.
6.CHECK COOLING FAN MOTOR CIRCUIT-3
Is the inspection result normal? YES >> GO TO 7.
NO >> Repair or replace error-detected parts.
7.CHECK COOLING FAN MOTOR CIRCUIT-4
Is the inspection result normal? YES >> GO TO 8.
NO >> Repair or replace error-detected parts.
8.CHECK COOLING FAN MOTOR CIRCUIT-5
Is the inspection result normal? YES >> GO TO 9.
NO >> Repair or replace error-detected parts.
9.CHECK COOLING FAN MOTOR CIRCUIT-4
Is the inspection result normal? YES >> GO TO 10.
NO >> Repair or replace error-detected parts.
10.CHECK COOLING FAN RELAY-2 AND -3
Refer to EC-461, "Component Inspection (Cooling Fan Relay)".
Is the inspection result normal? YES >> GO TO 11.
NO >> Replace malfunctioning cooling fan relay.
11.CHECK COOLING FAN MOTORS-1 AND -2
Refer to EC-461, "Component Inspection (Cooling Fan Motor)".
Is the inspection result normal? YES >> GO TO 12.
NO >> Replace malfunctioning cooling fan motor. Refer to CO-17, "Removal and Installation".
12.CHECK INTERMITTENT INCIDENT
Perform GI-41, "Intermittent Incident".
Is the inspection result normal? YES >> Replace IPDM E/R. Refer to PCS-35, "Removal and Installation".
NO >> Repair or replace error-detected parts.
Component Inspection (Cooling Fan Motor)
1.CHECK COOLING FAN MOTOR
Check that cooling fan speed of condition B is higher than that of A.
Is the inspection result normal? YES >> INSPECTION END
NO >> Replace cooling fan motor. Refer to CO-17, "Removal and Installation".
Component Inspection (Cooling Fan Relay)
1.CHECK COOLING FAN RELAYS
Is the inspection result normal? YES >> INSPECTION END
NO >> Replace cooling fan relay.
Monitor, climate, audio, phone and voice recognition systems
WARNING
Positioning of the heating or air conditioning
controls and display controls
should not be done while driving in order
that full attention may be given to
the driving operation.
Do not disassemble or modify this system.
If you do, it may result ...
Preparation
Special Service Tools
The actual shape of the tools may differ from those illustrated here.
Tool number
(TechMate No.)
Tool name
Description
—
(J-46534)
Trim Tool Set
Removing trim components
...
C1606 EPS motor
DTC Logic
DTC DETECTION LOGIC
DTC
Display item
Malfunction detected condition
Possible cause
C1606
EPS MOTOR
When the motor driver malfunction of EPS control
unit or EPS motor malfunction is detected.
Harness or connector
EPS ...