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).
- Timer stop at fuel cut mode.
- 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) | -30 (-22) | 64 ms | 73.2 ms | 83.9 ms | 96.3 ms | 113.2 ms | 133.9 ms | 160.2 ms | 194.6 ms |
| -20 (-4) | 64 ms | 73.3 ms | 84 ms | 96.6 ms | 113.7 ms | 135 ms | 162 ms | 197.4 ms | |
| -10 (14) | 64 ms | 73.4 ms | 84.2 ms | 96.9 ms | 114.5 ms | 136.4 ms | 164.4 ms | 201.5 ms | |
| 0 (32) | 64 ms | 73.5 ms | 84.5 ms | 97.4 ms | 115.6 ms | 138.5 ms | 168 ms | 207.6 ms | |
| 10 (50) | 102.2 ms | 114.8 ms | 129.4 ms | 146.7 ms | 171.7 ms | 203.4 ms | 245.1 ms | 302.1 ms | |
After engine start oil temperature characteristic diagnosis timer judgment value (t).
t = 1882940 - 43302 x Ti (t ≥ 1882940)
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) |