Component Tests and General Diagnostics
System Inspection
1. Remove the distributor.
2. Remove the ECM.
3. Connect the special service tools (SST)s to the ECM.
4. Turn the ignition switch to ON.
5. Rotate the distributor drive by hand and check the output signal.
6. If not as specified, inspect following.
Harness continuity
- Between ECM terminal 4G and distributor (6-pin) terminal D
- Between ECM terminal 4A and distributor (6-pin) terminal A
- Between main relay terminal D and distributor (6-pin) B terminal
Terminal voltage
- Distributor (6-pin) terminal B: Approx. 12 V
7. If there is incorrect terminal voltage or harness continuity, replace the distributor.