Interactive Muffler Control Actuator - Buell 2008 XB SERIES Electrical Diagnostics Manual

DTC P1470 (21), P1471 (21), P1477 (21), P1478
(21)
INTERACTIVE MUFFLER CONTROL
ACTUATOR
The interactive exhaust system utilizes an actuator valve in
the muffler which is connected to a servo motor via a cable.
The valve position automatically adjusts to enhance engine
performance.
A Code 21 will set if the ECM detects that the output for the
Interactive Muffler Control Actuator is not in agreement with
the feedback circuit.
Mechanical fault in the actuator, valve or cable.
Electrical fault in the actuator circuit.
Electrical fault in the actuator feedback circuit.
Electrical fault in the brake light or horn circuits.
Table 2-68. Code Description
DTC CHECK
ENGINE
LAMP CODE
P1470 21
P1471 21
P1477 21
P1478 21
ed01318
Figure 2-97. Active Muffler Control Actuator (Open)
2-124 2008 Buell XB Diagnostics: Engine Management
DESCRIPTION
Interactive muffler control
actuator stuck open
Interactive muffler control
actuator stuck closed
Interactive muffler control
actuator low/open
Interactive muffler control
actuator high
ed01317
Figure 2-98. Active Muffler Control Actuator (Closed)
ed01339
Figure 2-99. Active Muffler Control Actuator Motor
2.33