Diagnostic Method

• Abnormality Judgment 

Judge as NG when the following conditions are established.

Malfunction Criteria	Threshold Value
Engine oil temperature	< 45 °C (113 °F)
After engine start oil temperature sensor characteristic diagnosis timer.	≥ Judgment value for after engine start oil temperature sensor characteristic diagnosis timer

After engine start oil temperature sensor characteristic diagnosis timer (timer for diagnosis).

1. Timer stop at fuel cut
2. During the driving conditions except a) above, timer counts up as follows.

64 ms + TOILCNT ms (when at 64 ms)

Where, TOILCNT is determined as follows,

TOILCNT = 0 at idle switch ON

For TOILCNT at Idle switch off, refer to the following table.

		Vehicle speed km/h (MPH)
		0 (0)	8 (5)	16 (9.9)	24 (14.9)	32 (19.9)	40 (24.9)	48 (29.8)	56 (34.8)
Temperature °C (°F)	-20 (-4)	0 ms	26.546 ms	32.525 ms	39.359 ms	57.696 ms	81.469 ms	107.490 ms	129.459 ms
	-10 (14)	0 ms	23.945 ms	29.753 ms	36.390 ms	52.766 ms	75.211 ms	97.658 ms	118.256 ms
	0 (32)	0 ms	21.564 ms	27.215 ms	33.673 ms	47.872 ms	67.555 ms	87.207 ms	105.833 ms
	10 (50)	0 ms	17.464 ms	22.844 ms	28.992 ms	40.993 ms	55.379 ms	71.445 ms	85.303 ms
	30 (86)	0 ms	3.840 ms	8.320 ms	13.440 ms	19.840 ms	28.160 ms	37.760 ms	46.720 ms

After engine start oil temperature characteristic diagnosis timer judgment value (t).

t = 2162963 ms - 51852 ms x Ti (t ≥ 2400000)

Ti = The lowest coolant temperature after starting the engine.

Time Needed for Diagnosis:  Less than 1 second

Malfunction Indicator Light Illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.

• Normality Judgment 

Judge as OK and clear the NG if the following conditions are established.

Malfunction Criteria	Threshold Value
Engine oil temperature	≥ 45 °C (113 °F)

Time Needed for Diagnosis:  Less than 1 second