Active Intake System (Japanese Models Only) - Buell 2008 XB SERIES Electrical Diagnostics Manual

DTC P1110 (22), P1111 (22), P1112 (22)
(JAPANESE MODELS ONLY)
GENERAL
Active Intake System (Japanese Models
Only)
The active intake system utilizes a solenoid in the airbox which
is connected to the throttle valve via a cable. The throttle valve
is automatically closed by the solenoid under certain conditions
to reduce engine noise. See
components.
A code 22 will set if the ECM detects that the output for the
active intake control is not in agreement with the feedback cir-
cuit (minimum TP sensor voltage when actuated).
Likely causes for a code 22 are:
Mechanical fault in the active intake solenoid (8) throttle
valve, or cable (2).
Electrical fault in the solenoid circuit.
Electrical fault in the throttle position sensor circuit.
TPS reading not between 10.4-10.9 when activated.
Table 2-59. Code Description
DTC CHECK
ENGINE
LAMP CODE
P1110 22
P1111 22
P1112 22
DIAGNOSTICS
PART NUMBER
HD-41404-B HARNESS CONNECTOR TEST KIT
Diagnostic Notes
Each reference number below correlates to a circled number
on the flow chart(s).
1. Using HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-B), attach brown pin probe and patch cord to [178]
or [179].
Figure 2-87 for locations of system
DESCRIPTION
Active intake control circuit
low/open
Active intake control circuit
high
Active intake control throttle
position sensor feedback
failure
TOOL NAME
VERIFY SETTINGS
1. Prior to verifying the active intake system, perform the
throttle position sensor (TPS) zero set procedure. See
Throttle Position Sensor (TPS) in the appropriate Buell
Service Manual.
2. Leave Digital Technician attached to vehicle.
3. In Digital Technician, go to Active Intake test screen.
4. Rotate throttle grip to wide open throttle (WOT).
5. Check that when the throttle plate reaches WOT, TPS
reads above 82 degrees. If not, proceed to the cable
adjustment procedure in the appropriate Buell Service
Manual.
6. While holding the throttle wide open, activate the active
intake tab on Digital Technician.
7. Verify that the TPS setting is between 10.4-10.9 degrees.
If settings are not correct, proceed to cable adjustment
procedure in the appropriate Buell Service Manual.
REMOVAL
If solenoid bracket needs to be replaced, remove the baseplate
assembly, turn it over and remove the three fasteners securing
the bracket to the baseplate.
1. Disconnect electrical connector [178] (1).
2. Hold solenoid shaft by flat spot provided and break cable
connector (6) loose.
3. Unthread cable connector and disconnect cable from
solenoid (8).
4. Loosen jam nut (5) and disconnect active cable (2) from
cable bracket (4).
Follow next step only if solenoid is to be replaced.
5. Loosen pinch fastener on solenoid bracket (9).
6. Remove the two fasteners at the front on the solenoid
bracket (9) and slide solenoid (8) out of bracket.
When removing baseplate it will be necessary to feed the
electrical connector and active cable and grommets through
the baseplate.
7. Remove baseplate (10).
8. If the active cable needs to be replaced disconnect the
wheel (2).
2008 Buell XB Diagnostics: Engine Management 2-109
2.30
NOTE
NOTE
NOTE