User's Manual
Table Of Contents
- 1 Overview
- 1.1 Vehicle Coverage
- 2 Product Descriptions
- 3 Initial Use
- 4 Diagnose
- 5 Reset
- 5.1 Oil Reset Service
- 5.2 Electronic Parking Brake Reset
- 5.3 Steering Angle Calibration
- 5.4 ABS Bleeding
- 5.5 Gear Learning
- 5.6 IMMO Service
- 5.7 Injector Coding
- 5.8 Battery Maintenance System Reset
- 5.9 Diesel Particulate Filter (DPF) Regeneration
- 5.10 Electronic Throttle Position Reset
- 5.11 Gearbox Matching
- 5.12 AFS (Adaptive Front-lighting System) Reset
- 5.13 Sunroof Initialization
- 5.14 Suspension Calibration
- 5.15 EGR Adaption
- 5.16 Seats Calibration
- 5.17 Tyre Reset
- 5.18 Coolant Bleed
- 5.19 AdBlue Reset (Diesel Engine Exhaust Gas Filter)
- 5.20 NOx Sensor Reset
- 5.21 AC System Initialization
- 5.22 High Voltage Battery Detection
- 5.23 Windows Calibration
- 5.24 Language Change
- 5.25 A/F Reset
- 5.26 Transport Mode
- 5.27 Stop/Start Reset
- 5.28 Intelligent Cruise Control System Reset
- 5.29 Engine Power Balance Monitoring
- 5.30 Gas Particulate Filter (GPF) Regeneration
- 5.31 Motor Angle Calibration
- 6 Data
- 7 Upgrade
- 8 Add-on Modules
- Warranty
12
LAUNCH Professional 919X User Manual
OBD II vehicles are equipped with a fuel Evaporative system (EVAP) that
helps prevent fuel vapors from evaporating into the air. The EVAP system
carries fumes from the fuel tank to the engine where they are burned during
combustion. The EVAP system may consist of a charcoal canister, fuel tank
cap, purge solenoid, vent solenoid, ow monitor, leak detector and connecting
tubes, lines and hoses.
Fumes are carried from the fuel tank to the charcoal canister by hoses or
tubes. The fumes are stored in the charcoal canister. The computer controls
the ow of fuel vapors from the charcoal canister to the engine via a purge
solenoid. The computer energizes or deenergizes the purge solenoid
(depending on solenoid design). The purge solenoid opens a valve to allow
engine vacuum to draw the fuel vapors from the canister into the engine where
the vapors are burned. The EVAP Monitor checks for proper fuel vapor ow to
the engine, and pressurizes the system to test for leaks. The computer runs
this Monitor once per trip.
The EVAP Monitor is supported by “spark ignition” vehicles only. The EVAP
Monitor is a “Two-Trip” Monitor. If a fault is found on the rst trip, the computer
temporarily saves the fault in its memory as a Pending Code. The computer
does not command the MIL on at this time. If the fault is sensed again on the
second trip, the PCM commands the MIL “On,” and saves the code in its long-
term memory.
7. Secondary Air System Monitor
When a cold engine is rst started, it runs in open-loop mode. During open-
loop operation, the engine usually runs rich. A vehicle running rich wastes
fuel and creates increased emissions, such as carbon monoxide and some
hydrocarbons. A Secondary Air System injects air into the exhaust stream to
aid catalytic converter operation:
• It supplies the catalytic converter with the oxygen it needs to oxidize the
carbon monoxide and hydrocarbons left over from the combustion process
during engine warmup.
• The extra oxygen injected into the exhaust stream also helps the catalytic
converter reach operating temperature more quickly during warm-up
periods. The catalytic converter must heat to operating temperature to work
properly.
The Secondary Air System Monitor checks for component integrity and system
operation, and tests for faults in the system. The computer runs this Monitor
once per trip.
The Secondary Air System Monitor is a “Two-Trip” monitor. If a fault is found