Mazda RX-8 Manual page 543

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Table of Contents

Open circuit

If there is no continuity in the following wiring harnesses, there is an open circuit. Repair or replace the

wiring harness.

Front HO2S terminal A and PCM terminal 2B

Front HO2S terminal B and PCM terminal 2C

Front HO2S terminal C and main relay terminal C

Front HO2S terminal D and PCM terminal 1V

Short circuit

If there is continuity in the following wiring harnesses, there is a short circuit. Repair or replace the

wiring harness.

Front HO2S terminal A and body ground

Front HO2S terminal A and power supply

Front HO2S terminal B and body ground

Front HO2S terminal B and power supply

Front HO2S terminal D and body ground

REAR HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION

1. Remove the rear HO2S connector.

2. Remove in the order indicated in the table.

Engine Specifications

Troubleshooting