Mazda CX-5 Service & Repair Manual: Exhaust System

Mazda CX-5 Service & Repair Manual / Engine / Exhaust & Emissions / Exhaust System

Purpose, Outline

A 4-2-1 exhaust system has been adopted which reduces residual gas in the cylinders using the scavenging effect and contributes to a high compression ratio.
The loop structure of the exhaust pipes for the 4-2-1 system takes up less space.

Structural View

2WD

AWD

System Diagram

Structure

The exhaust system consists of the following parts:


Part name	Reference
Main silencer	(See MAIN SILENCER [SKYACTIV-G 2.0].)
Presilencer	(See PRESILENCER [SKYACTIV-G 2.0].)
TWC	(See CATALYTIC CONVERTER [SKYACTIV-G 2.0].)
WU-TWC	(See CATALYTIC CONVERTER [SKYACTIV-G 2.0].)
Exhaust manifold	(See EXHAUST MANIFOLD [SKYACTIV-G 2.0].)

Exhaust System Removal/Installation

WARNING: A hot engine and exhaust system can cause severe burns. Turn off the engine and wait until they are cool before removing the exhaust system. 2WD 1. Disconnect the negative b ...

Main Silencer

Purpose, Function Reduces the exhaust noise. Construction The main silencer is installed to the vehicle rear, under the trunk compartment. 2WD AWD The main ...

Other materials:

Heated Oxygen Sensor (HO2 S) Heater Control
Outline Based on the control of the HO2S heater, a stabilized oxygen concentration is detected even at low exhaust temperatures, and feedback control of fuel injection even at cold engine start is made possible for improved cold temperature exhaust emission performance. Both ...

Down Switch Inspection [Fw6 A EL, Fw6 Ax EL]
Continuity Inspection NOTE: The down switch is built into the selector lever component. 1. Disconnect the negative battery cable.. 2. Remove the front console.. 3. Disconnect the selector lever component connector. 4. Verify that the continuity between selector lever compone ...

Rear Beltline Molding Removal/Installation
CAUTION: Affix protective tape to the position shown in the figure. 1. Fully open the rear door glass. 2. Insert a tape-wrapped flathead screwdriver and then detach the clip A in the direction of arrow (1) shown in the figure. 3. Pull up the rear belt line molding in the di ...