DTC Troubleshooting: P0135 (41)
  1. Check for continuity between A/F sensor (Sensor 1) 4P connector terminal No. 3 and ECM connector terminal C9.
Is there continuity?
YES -
Go to Step 14 .
NO -
Repair open in the wire between the ECM (C9) and the A/F sensor (Sensor 1), then go to Step 22 .
  1. Disconnect under-hood fuse/relay box connector D (20P).