SELF-DIAGNOSIS FUNCTION
F-85flowchartCODE NO.09 WATER THERMOSENSOR
1
Are there any poor connections in water thermosensor circuit?
Yes
Repair or replace connector
No
2
Is there continuity between water thermosensor and ECU? Water thermosensor A(L/W)–ECU 2Q; B(B/LG)–ECU 2D
No
Check for open circuit in wiring from water thermosensor to ECU
Yes
3
Is resistance of water thermosensor OK? Coolant temp/Resistance: -20°C (-4°F) 14.6–17.8 kΩ; 20°C (68°F) 2.2–2.7 kΩ; 80°C (176°F) 290–350Ω
No
Replace water thermosensor (Refer to page F-139)
Yes
4
Is same Code No. present after performing after-repair procedure? (Refer to page F-88)
No
Water thermosensor and circuit OK
Yes
5
Are ECU terminals 2Q and 2D voltages OK? (Refer to page F-129)
No
Check for short circuit in wiring from water thermosensor to ECU
Yes
6
Replace ECU (Refer to page F-127)
CODE NO.10 INTAKE AIR THERMOSENSOR (IN AIRFLOW METER)
1
Are there any poor connections in intake air thermosensor circuit?
Yes
Repair or replace connector
No
2
Is there continuity between intake air thermosensor (in airflow meter) and ECU? Intake air thermosensor C(B/LG)–ECU 2D; G(R/G)–ECU 2P
No
Check for open circuit in wiring from intake air thermosensor (in airflow meter) to ECU
Yes
3
Is resistance of intake air thermosensor (in airflow meter) OK? Terminal C(B/R/G)–G(R/G); -20°C (-4°F) 13.6–18.4 kΩ; 20°C (68°F) 2.21–2.69 kΩ; 60°C (140°F) 493–667Ω
No
Replace airflow meter (Refer to page F-135)
Yes
4
Is same Code No. present after performing after-repair procedure? (Refer to page F-88)
No
Intake air thermosensor and circuit OK
Yes
5
Are engine control unit terminals 2P and 2D voltages OK? (Refer to page F-129)
No
Check for short circuit in wiring from intake air thermosensor to ECU
Yes
6
Replace ECU (Refer to page F-127)
CODE NO.14 ATMOSPHERIC PRESSURE SENSOR
Replace ECU (Refer to page F-127)