TROUBLE DIAGNOSIS — GENERAL DESCRIPTION; DTC Inspection Priority Chart; Fail-safe Chart
EF & EC-7055spec tableThe P0120 row contains a nested 2-column sub-table (Condition vs Driving condition); flattened into the operation cell.
DTC Inspection Priority Chart
CG10, CGA3
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority chart.
DTC Inspection Priority Chart
1
Detected items (DTC)- P0100 Mass air flow sensor
- P0110 Intake air temperature sensor
- P0115, P0125 Engine coolant temperature sensor
- P0120 Throttle position sensor
- P0201 - P0204 Injector circuit
- P0340 Camshaft position sensor (PHASE) circuit
- P0500 Vehicle speed sensor
- P0601, P0604 ECM
- P0335 Crankshaft position sensor (POS)
- P1706 Park/Neutral position switch
2
Detected items (DTC)- P0130 - P0134 Heated oxygen sensor 1 (front)
- P0135 Heated oxygen sensor 1 heater (front)
- P0137 - P0140 Heated oxygen sensor 2 (rear)
- P0141 Heated oxygen sensor 2 heater (rear)
- P0443 EVAP canister purge volume control solenoid valve
3
Detected items (DTC)- P0171, P0172 Fuel injection system function
- P0300 - P0304 Misfire
- P0420 Three way catalyst function
- P0505 IACV-AAC valve
Fail-safe Chart
The ECM enters fail-safe mode if any of the following malfunctions is detected due to the open or short circuit. When the ECM enters the fail-safe mode, the MI illuminates.
Fail-safe Chart
P0100
Detected itemsMass air flow sensor circuit
Engine operating condition in fail-safe modeEngine will operate normally but stability is poor.
P0115
Detected itemsEngine coolant temperature sensor circuit
Engine operating condition in fail-safe modeEngine 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.
The radiator fan operates.
P0120
Detected itemsThrottle position sensor circuit
Engine operating condition in fail-safe modeThrottle position will be determined based on the injected fuel amount and the engine speed. Therefore, acceleration will be poor.
Condition / Driving condition:
- When engine is idling → Normal
- When accelerating → Poor acceleration