Troubleshooting Flowchart — Ignition Output Signal (cont'd)
6-55flowchart1
(From page 6-54)
2
Connect the PGM-FI test harness between the ECU and connector (page 6-19).
3
Turn the ignition switch ON.
4
Measure voltage individually between B15 (+), B17 (+) terminals and A18 (-) terminal.
5
Is there battery voltage ?
NO
- Replace the igniter unit.
- Replace the igniter unit.
- Repair open in wires between distributor and ECU (B15 or B17).
YES
Substitute a known-good ECU and recheck. If symptom/indication goes away, replace the original ECU.