1. Measure voltage between secondary HO2S (Sensor 2) 4P connector terminal No. 4 and body ground.

Is there battery voltage?

YES | - | Go to Step 17 .
NO | - | Check the No. 18 ACG (15 A) fuse in the under-dash fuse/relay box. If the fuse is OK, repair open in the wire between the secondary HO2S (Sensor 2) and the No. 18 ACG (15 A) fuse, then go to Step 25 .

1. Turn the ignition switch OFF.

1. Jump the SCS line with the HDS.

1. Reconnect the secondary HO2S (Sensor 2) 4P connector.

1. Disconnect ECM/PCM connector E (31P).

1. Turn the ignition switch ON (II).