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EC-524
[QR (WITHOUT EURO-OBD)]
TROUBLE DIAGNOSIS
Fail-safe Chart EBS010X6
When the DTC listed bellow is detected, the ECM enters fail-safe mode and the MI lights up.
Priority Detected items (DTC)
1
● U1000 U1001 CAN communication line
● P0102 P0103 Mass air flow sensor
● P0117 P0118 Engine coolant temperature sensor
● P0122 P0123 P0222 P0223 P1225 P1226 P2135 Throttle position sensor
● P0327 P0328 Knock sensor
● P0335 Crankshaft position sensor (POS)
● P0340 Camshaft position sensor (PHASE)
● P0500 Vehicle speed sensor
● P0605 ECM
● P1229 Sensor power supply
● P1610-P1615 NATS
● P1706 Park/Neutral position (PNP) switch
● P2122 P2123 P2127 P2128 P2138 Accelerator pedal position sensor
2
● P0132 P0134 Heated oxygen sensor 1
● P0550 Power steering pressure sensor
● P1065 ECM power supply
● P1122 Electric throttle control function
● P1124 P1126 Throttle control motor relay
● P1128 Throttle control motor
● P1211 TCS control unit
● P1212 TCS communication line
● P1720 Vehicle speed sensor
● P1805 Brake switch
3
● P0011 Intake valve timing control
● P1121 Electric throttle control actuator
● P1217 Engine over temperature (OVERHEAT)
DTC No. Detected items Engine operating condition in fail-safe mode
P0102
P0103
Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut.
P0117
P0118
Engine coolant tempera-
ture sensor circuit
Engine coolant temperature will be determined by ECM based on the time after turning
ignition switch ON or START.
CONSULT-II displays the engine coolant temperature decided by ECM.
Condition
Engine coolant temperature decided
(CONSULT-II display)
Just as ignition switch is turned ON or START 40°C (104°F)
More than approx. 4 minutes after ignition ON
or START
80°C (176°F)
Except as shown above
40 - 80°C (104 - 176°F)
(Depends on the time)
When the fail-safe system for engine coolant temperature sensor is activated, the cooling
fan operates while engine is running.
P0122
P0123
P0221
P0222
P2135
Throttle position sensor The ECM controls the electric throttle control actuator in regulating the throttle opening in
order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal
condition.
So, the acceleration will be poor.
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