The exhaust control system (excs) consists of the exhaust control valve (excv), exhaust control valve actuator (excva) and exhaust control valve cables (excv cables).
Excv is installed in the exhaust pipe. Excva is mounted inside of the right frame. The excv is operated by the excva via the cables. This system is designed to improve the engine torque at low engine rpm.

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Exhaust control system operationSpecial tools and equipment
Recommended service material
Note
required service material is also described in the following.
“Exhaust system components”
Special tool
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DTC “c11” (p0340): cmp sensor circuit
malfunction
Detected condition and possible cause
Detected condition
Possible cause
The signal does not reach ecm for 3 sec. Or more, after
receiving the starter signal.
Cmp sensor circuit open or short.
Cmp sensor malfunction.
Ecm malfunction.
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Oil pump removal and installation
Note
be careful not to drop any parts into the
crankcase.
Removal
Remove the oil pan, oil pressure regulator and oil strainer. Refer to
“oil pan / oil pressure regulator / oil strainer removal and installation” .
Remove the oil pump driven gear bolt (1).
Rem ...