Key On-engine Off (KOEO) Self-test
Connect voltmeter and insert jumper wire to self-test input terminal and output terminal No. 2. This activates the self-test. Turn ignition switch to "Run" position. DO NOT depress throttle during test. Observe and record On Demand and Continuous codes. When more than 1 code is displayed, always repair problems in the order that codes were displayed. Repair codes as follows:
KEY ON-ENGINE OFF (KOEO) SELF-TEST RESULTS
| On Demand Codes | Continuous Codes | Go To |
|---|---|---|
| 11 | 11 | TIMING CHECK |
| Any | 11 | On Demand Code Table |
| Any | Any | On Demand Code Table |
| 11 | Any | TIMING CHECK |
| None | None | Test I |
ON DEMAND CODES
| Code | Test to Perform |
|---|---|
| 15 | Replace ECA, retest. |
| 21 | Test D |
| 22 | Test E |
| 23 | Test F |
| 51 | Test D, step 6) |
| 53 | Test F, step 7) |
| 61 | Test D, step 8) |
| 63 | Test F, step 12) |
| 67 | Test G |
| 68 | Test H |