EG–392 ENGINE – 2JZ–GE ENGINE TROUBLESHOOTING DTC No. | Number of MIL Blinks | Circuit | Diagnostic Trouble Code Detecting Condition 26 | [MIL blink pattern] | Air–Fuel Ratio Rich Malfunction | (1) Difference of air–fuel ratio feedback compensation value between front (No.1 ~ 3 cylinders) and rear (No.4 ~ 6 cylinders) is more than 15 percentage for 20 sec. or more under conditions(a) and (b): (2 trip detection logic)*4 (a) Engine speed: 2,000 rpm or more (b) Engine coolant temp.: Between 60°C (140°F) and 95°C (203°F) (2) Engine speed varies by more than 15 rpm over the preceding crank angle period during a period o 20 sec. or more under conditions (a) and (b): (2 trip detection logic)*4 (a) Engine speed: 2,000 rpm or more (b) Engine coolant temp.: Between 60°C (140°F) and 95°C (203°F) BE3932 27*3 | [MIL blink pattern] | Sub Heated Oxygen Sensor Signal | (1) Open or short in heater circuit of sub heated oxygen sensor for 0.5 sec. or more (2) Main heated oxygen sensor signal is 0.45 V or more and sub oxygen sensor signal is 0.45 V or less under conditions (a) ~ (c): (2 trip detection logic)*4 (a) Engine coolant temp.: 80°C (176°F) or more (b) Engine speed: 1,500 rpm or more (c) Accel. pedal: Fully depressed for 2 sec. or more BE3932 28 | [MIL blink pattern] | (Main heated*3) Oxygen Sensor Signal (Rr) | (1)*3 Open or short in heater circuit of main heated oxygen sensor (Rr) for 0.5 sec. or more| (2) (Main heated*3) oxygen sensor (Rr) signal voltage is reduced to between 0.35 V and 0.70 V for 90 sec. under conditions (a) ~ (d) (2 trip detection logic)*4 (b) Engine coolant temp.: Between 80°C (176°F) and 95°C (203°F) (b) Engine speed: 1,500 rpm or more. (c) Load driving (Example A/T in Overdrive (5th for M/T), A/C ON, Flat road, 80 km/h (50 mph)) (d) (Main heated*3) oxygen sensor (Rr) signal voltage: Alternating above and below 0.45 V BE3932 *3, 4: See page EG–396, 397