Possible DTC : P1624, P1625
＊ CC-CODE
C018 (Line : Short circuit)
Possible causes of trouble :
Short circuit to Bat line Fuse defective Relay defective Resistance continuity defective Fan motors defective |
C019 (Line : Open circuit)
Possible causes of trouble :
Short circuit to GND line, Open circuit Fuse defective Relay defective Series resistors defective Fan motors defective |
The fan relays are in 3 kinds
The first relay (FAN 1 ): Speed 1 (both fans)
The second and thrid relays : Speed 2 (each fan)
Fan speed 1 :
Measure the supply voltage at relay pin 85 to the ground with ignition on.
Set value : 8 ~ 15V
Check the fuse, if set value is not attained.
Ignition off.
Check wiring between ECU pin 20 and relay pin 85 if wiring is OK, check the relay.
Measure the series resistances.
If fans do not start up despite actuation, check the fuse.
Measure the resistance of wiring between relay pin 87 and GND.
Fan speed 2
Additional checks.
Measure the supply voltage of relays pin 85 to GND with ignition on.
Set value : 5 ~ 15V
Ignition off
Check wiring of relays pin 86 to ECU PIN 19.
Check wiring of relays pin 87 to GND.
