FAILURE DIAGNOSIS
TNV DI Service Manual
1-41
DTCs (Diagnostic Trouble Codes) General Description
(2) P0669/3: Failure with ECU Temperature Sensor (High Voltage)
DTC Detecting Conditions
Movement at Error occurrence
Estimation of Failure cause/Error condition
• The E-ECU internal circuitry may be faulty.
Diagnosis Description
DTC
P0669/3
Failure with ECU Temperature Sensor (High Voltage)
1 - Precondition; 2 - Detecting condition(s);
3 - Flashing pattern of failure indicator
Check points
1. Key switch ON.
2. Sensor voltage 4.6 [V] (at -45°C) or lower.
3. Four flashes followed by one flash.
E-ECU
Error Mode
[Operation Continuation]: No obstacles to control the engine.
The engine continues to run with the ECU temperature set to the default of 30 [°C].
Run restricted?
No.
Recovery
Conditions
Yes: This error will be automatically reset when a normal sensor voltage (0.2 to
4.6[V]) is input.
Remarks
1) Initial diagnosis
with the diagnosis
tool
• Check the fault indication.
• Check the ECU temperature.
*For details of the method and the procedure of diagnosis, see P.1-154
TNV_DI_SM_A4-Troubleshooting.book 41 ページ ２００７年１１月１５日 木曜日 午後５時２７分
