Mazda CX-9 Grand Touring 2007 Manual page 170

Fig. 26: Identifying Front HO2S & PCM Related Connector Terminals
Courtesy of MAZDA MOTORS CORP.
Open circuit
If there is no continuity, the circuit is open. Repair or replace the harness.
HO2S (RH) terminal A and PCM terminal 2J
HO2S (RH) terminal B and PCM terminal 2Y
HO2S (RH) terminal C and main relay No.2 terminal D
HO2S (RH) terminal D and PCM terminal 2AL
HO2S (LH) terminal A and PCM terminal 2E
HO2S (LH) terminal B and PCM terminal 2U
HO2S (LH) terminal C and main relay No.2 terminal D
HO2S (LH) terminal D and PCM terminal 2AL
Short circuit
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE Control System (MZI-3.5) - CX-9