Ridgeline V6-3.5L (2006)
13. Turn the ignition switch OFF.
14. Jump the SCS line with the HDS.
15. Disconnect PCM connector A (44P), then disconnect the HDS.
16. Check for continuity between PCM connector terminal A31 and body ground
Is there continuity?
YES - Repair short in the wire between the PCM (A31) and the DLC.
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.
17. Try to start the engine.
Does the engine start and idle smoothly?
YES - Go to step 18.
NO - Go to step 22.
18. Turn the ignition switch OFF.
19. Connect the HDS.
20. Turn the ignition switch ON (II), and read the HDS.
Does the HDS communicate with the PCM?
YES - Go to step 21.
NO - Go to "DLC Circuit Troubleshooting".
21. Check for Temporary DTCs or DTCs with the HDS.
Is DTC U0073 and/or U0155 indicated?
YES - Go to the indicated DTC's troubleshooting.
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.
22. Turn the ignition switch OFF.
23. Inspect the No. 23 +B IG MAIN (50 A) fuse in the under-hood fuse/relay box.
Is the fuse OK?
YES - Repair open in the wire between the No. 23 +B IG MAIN (50 A) fuse and the ignition switch. If the wire is OK, go to step 24.
NO - Repair short in the wire between the No. 23 +B IG MAIN (50 A) fuse and the under-hood fuse/relay box. Also replace the No. 23 +B IG
MAIN (50 A) fuse.
24. Inspect the No. 8 FI ECU (PCM) (15 A) fuse in the under-hood fuse/relay box.
