MDX V6-3.7L (2007)
YES -
-
Replace the under-hood fuse/relay box.
-
Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away
with a known-good PCM, replace the original PCM.
NO - Repair open in the wire between the PCM (A6) and the under-hood fuse/relay box.
59. Turn the ignition switch OFF.
60. Disconnect the under-hood fuse/relay box 9P connector.
61. Check for continuity between PCM connector terminal B3 and under-hood fuse/relay box 9P connector terminal No. 1.
Is there continuity?
YES - Go to step 62.
NO - Repair open in the wire between the PCM (B3) and the under-hood fuse/relay box.
62. Test PGM-FI main relay 1 in the under-hood fuse/relay box.
Is PGM-FI main relay 1 OK?
YES - Go to step 63.
NO - Replace the relay control module (under-hood fuse/relay box).
63. Disconnect PCM connector C (49P).
