Diagnostic Method

• Abnormality Judgment 

When the following conditions are established, judged as NG.

Judgment Value 

Malfunction Criteria	Threshold Value
Engine oil temperature	<15°C(59°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 mode.
2. During the driving conditions except a) above, timer count up by 64 milliseconds + TCILCNT milliseconds at every 64 milliseconds.

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(10)	24(15)	32 (20)	40 (25)	48 (30)	56 (35)
Temperature °C (°F)	-40 (-40)	0 ms	32 ms	76 ms	130 ms	149 ms	171 ms	176 ms	181 ms
	-30 (-22)	67 ms	93 ms	121 ms	157 ms	170 ms	184 ms	193 ms	203 ms
	-20 (-4)	98 ms	123 ms	148 ms	184 ms	193 ms	204 ms	214 ms	226 ms
	-10(14)	145 ms	166 ms	187 ms	208 ms	223 ms	239 ms	242 ms	245 ms
	0(32)	161 ms	187 ms	212 ms	243 ms	252 ms	262 ms	266 ms	270 ms

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

t = 2400000 - 60000 x Ti (t > 2400000)

Ti = The lowest coolant temperature after starting the engine.

Time Needed for Diagnosis:  Undecided

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

• Normality Judgment 

When the following conditions are established, judged as OK.

Judgment Value 

Malfunction Criteria	Threshold Value
Engine oil temperature	≥15°C(59°F)