1A-27 Engine General Information and Diagnosis:
DTC “C12” (P0335): CKP Sensor Circuit Malfunction
B944H11104010
Detected Condition and Possible Cause
Wiring Diagram
ECM coupler (Harness side)
C44
HO2 sensor
After engine is started few minutes.
(Sensor output voltage ≥ 2.5 V)
Engine is cold and stopped.
(Sensor output voltage < 0.1 V)
In other than the above value, C44
(P0130) is indicated.
HO2 sensor is circuit open or
shorted to groundP0130
C44
The heater can not operate so that heater
operation voltage is not supply to the oxygen
heater circuit, C44 (P0135) is indicated.
HO2 sensor lead wire/coupler
connection
Battery voltage supply to the
HO2 sensor
P0135
C60
Cooling fan relay Cooling fan relay signal is not input to ECM.
Cooling fan relay, lead wire/
coupler connectionP0480
Malfunction
Code
Detected Item Detected Failure Condition Check For
Detected Condition Possible Cause
The signal does not reach ECM for 3 seconds. or more,
after receiving the starter signal.
• Metal particles or foreign material being stuck on the
CKP sensor and rotor tip.
• CKP sensor circuit open or short.
• CKP sensor malfunction.
• ECM malfunction.
Generator
ECM
CKP sensor
CKPS
To the regulator/rectifier
CKPS
O/Bl
WB/R
B/Y
27
8
I944H1110007-02
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I944H1110008-01
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