Odyssey EX V6-3.5L (1999)
NO - Repair open in the wire between the PCM (C5) and the ALT.
14. Turn the ignition switch OFF.
15. Disconnect the negative battery cable from the battery.
16. Disconnect the PCM connector C (31P)
17. Check for continuity between body ground and PCM connector terminal C5.
Is there continuity?
YES - Repair short in the wire between the PCM (C5) and the ALT.
NO - Substitute a known-good PCM and recheck. If voltage is normal, replace the original PCM.
See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Strategies
