1. Disconnect the rear HO2S connector.
2. Measure the rear HO2S resistance between terminals C and D.
If not within the specification, replace the rear HO2S. (See
REAR HEATED OXYGEN SENSOR
(HO2S) REMOVAL/INSTALLATION [LF]
.)
Rear HO2S heater resistance
2-50 ohms
Fig. 68: Identifying Rear HO2S Connector Terminals
Courtesy of MAZDA MOTORS CORP.
REAR HO2S CIRCUIT OPEN/SHORT INSPECTION
1. Disconnect the PCM connector.
2. Disconnect the rear HO2S connector.
2007 Mazda MX-5 Miata Sport
2007 ENGINE PERFORMANCE Engine Control System - MX-5 Miata
Microsoft
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