GDI ± Troubleshooting
13A-22
Code No. 24 Vehicles speed sensor system Probable cause
Range of check
D Ignition switch: ON
D Excluding 60 seconds after the ignition switch is turned to ON or immediately
after the engine starts.
D Engine speed is 3,000 r/min or more.
D Driving under high engine load conditions.
Set conditions
D Sensor output voltage does not change for 4 seconds (no pulse signal input).
D Malfunction of the vehicle speed sensor
D Improper connector contact, open circuit or
short-circuited harness wire of the vehicle speed
sensor circuit
D Malfunction of the engine-ECU
Does the speedometer operate normally?
No
Check the vehicle speed sensor circuit. (Refer to GROUP 54
± Combination Meter.)
Yes
Measure at engine-ECU connector C-19.
D Connect the connector.
D Voltage between terminal 80 and earth
(Ignition switch: ON)
OK: If the vehicle is moved forward without starting the engine,
0 V and system voltage alternates.
OK
Check the following connector: C-19
NG
Repair
OK
Check trouble symptom.
NG
Replace the engine-ECU.
NG
Check the following connectors:
C-28, C-38 <LHD>, C-41 <RHD>, D-02
NG
Repair
OK
Check trouble symptom.
NG
Check the harness wire between the vehicle speed sensor and
engine-ECU.
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