Toyota RAV4 manuals

Suzuki GSX-R 1000 Service Manual: Exhaust control system operation

The excs is operated by the signal supplied from the ecm. The open/close operation of the excv is performed by the excva which is controlled by the ecm by changing the current direction of the actuator motor. The position sensor (incorporated in the excva) detects the excva movement by measuring the voltage and then the ecm determines the excv opening angle based on the engine rpm and gear positions. Every time the ignition switch is turned on, the excva automatically drives the excv and detects full close/open position voltages and sets the excv to middle position.

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Suzuki GSX-R. Full open


Exhaust control system description
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 ex ...

Repair instructions
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Other materials:

Cylinder head cover disassembly and assembly
Disassembly Remove the cylinder head cover. Refer to “engine top side disassembly” .  Remove the gaskets (1) and (2). Remove the pair control solenoid valve (3) along with the pair reed valve covers (4). Remove the pair reed valves (5) and cmp sensor (6). As ...

Fuel level gauge inspection
Inspect the fuel level gauge in the following procedures:  remove the fuel pump. Refer to “fuel pump disassembly and assembly” in section 1g .  Measure the resistance at each fuel level gauge in float position. If the resistance is incorrect, replace fuel level gauge with a ne ...

DTC “c28” (p1655): secondary throttle valve actuator (stva) malfunction
Detected condition and possible cause Detected condition Possible cause The operation voltage does not reach the stva. Ecm does not receive communication signal from the stva. Stva can not operate properly or its motor locked Stva malfunction.   ...

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