## PGM-FI System

#### Primary HO2S Replacement

11-279

#### Secondary HO2S Replacement

Special Tools Required O2 sensor wrench 07LAA-PT50101

1. Disconnect the primary HO2S 4P connector (A), then remove the primary HO2S (B).

D15Y6, D15Y5, D17A1, D17Z2 engines:

D15Y2, D15Y4, D16W8, D17Z1, D17A2, D17Z3, D17Z4 engines:

2. Install the primary HO2S in the reverse order of removal.

Special Tools Required

O2 sensor wrench 07LAA-PT50101

1. Disconnect the secondary HO2S 4P connector (A), then remove the secondary HO2S (B).

D15Y6 engine:

D15Y4, D17A2 (KU, KQ, KZ, FO models), D17Z1 (KQ model) engines:

2. Install the secondary HO2S in the reverse order of removal.