MDX V6-3.7L (2007)
42. Check for continuity between PCM connector terminal B3 and body ground.
Is there continuity?
YES - Go to step 43.
NO - 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. Also replace the No. 8 IGP (15 A) fuse in the under-hood fuse/relay box.
43. Disconnect each of the components or connectors below, one at a time, and check for continuity between PCM connector terminal B3 and body
ground.
-
PGM-FI main relay 2
-
Each injector 2P connector
-
Camshaft position (CMP) sensor 3P connector
-
Crankshaft position (CKP) sensor 6P connector
-
Under-hood fuse/relay box 9P connector
Does continuity go away when one of the above components is disconnected?
YES - Replace the component that made the short to body ground go away when disconnected. If the item is the PCM, 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. Also replace the No. 8 IGP (15 A) fuse.
NO - Repair short in the wire between the PCM (B3) and the PGM-FI main relay 2, the injector, the CKP sensor, or the under-hood fuse/relay
box. Also replace the No, 8 IGP (15 A) fuse in the under-hood fuse/relay box.
44. Inspect the No. 19 FUEL PUMP (20 A) fuse in the under-dash fuse/relay box.
Is the fuse OK?
YES - Go to step 51.
NO - Go to step 45.
45. Remove the blown No. 19 FUEL PUMP (20 A) fuse in the under-dash fuse/relay box.
46. Jump the SCS line with the HDS.
47. Disconnect PCM connector B (49P).
