DTC Troubleshooting: P0135 (41)
  1. Check for continuity between A/F sensor (Sensor 1) 4P connector terminal No. 3 and PGM-FI subrelay 4P connector terminal No. 2.
Is there continuity?
YES -
Go to Step 17 .
NO -
Repair open in the wire between the A/F sensor (Sensor 1) and the PGM-FI subrelay, then go to Step 24 .
  1. Disconnect ECM/PCM connector A (49P).