Test DA: Step 90
90) Continuous Memory Code 51, 54, 58, 61, 64 or 68: Check Sensor A Continuous Memory Code 51, 54 or 58 indicates that sensor signal was greater than the Self-Test maximum of 4.6 volts. The code was set during normal driving conditions.
Continuous Memory Code 61, 64 or 68 indicates that sensor signal was less than the self-test minimum of 0.2 volt. The code was set during normal driving conditions.
Possible causes for these faults are:
- Faulty sensor
- Open or grounded circuit in harness
| Sensor | Continuous Memory Code |
|---|---|
| ACT | 54, 64 |
| ECT | 51, 61 |
| VAT | 54, 58, 64, 68 |
Enter KOEO Continuous Monitor Mode (Wiggle Test), observe VOM or diagnostic tester for indication of fault while tapping sensor lightly and wiggling sensor connector. If fault is indicated, disconnect and inspect connector and terminals. If connector and terminals are okay, replace sensor and repeat QUICK TEST. If a fault is not indicated, go to next step.