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FI
FUEL INJECTION SYSTEM
Fault code No. 17 Symptom EXUP servo motor potention circuit - open or short circuit detected.
Used diagnostic code 53
Inspection operation item and probable cause Operation item and countermeasure Reinstatement
method
Defective EXUP servo motor potention circuit. Replace if defective.
1. Disconnect the EXUP servomotor coupler
from the wire harness.
2. Connect the pocket tester (Ω × 1k) to the
EXUP servomotor coupler.
3. While slowly turning the EXUP servomotor
pulley, measure the EXUP servomotor
resistance.
4. Is the EXUP servomotor OK?
Reinstated by turn-
ing the main switch
ON.
Open or short circuit in wire harness. Repair or replace if there is an open or short
circuit.
Between motor coupler and ECU coupler
Blue - Blue
White/Red - White/Red
Black/Blue - Black/Blue
Connected condition of connector
Inspect the coupler for any pins that may have
pulled out.
Check the locking condition of the coupler.
If there is a malfunction, repair it and connect it
securely.
EXUP servo motor coupler
Main wire harness ECU coupler
Positive tester terminal
→
orange
1
Negative tester probe
→
white
2
1
2
EXUP servomotor resistance
(when the pulley is turned once)
0 ~ approximately
7.5 k
Ω
(blue - white/red)