Black Widow Security BW 2800 Service Manual download pdf (Page 25)

Electrical_EFI Service Manual.fm

Retrying Checksum

Data is transferred between the vehicle and PC in small “packets” or chunks. During the transfer process, checks

are performed by the diagnostic tool (software) to ensure that the data is not damaged during the transfer. Each

small packet is checked during the transfer. If data errors are detected in the packet, the message “Retrying

Checksum...” will display in the progress indicator:

Typically, this is due to electrical “noise” or other interference during the process. The diagnostic tool will keep

trying automatically.

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Electrical/EFI Service Manual 1
INTRODUCTION 2
IMPORTANT MANUAL INFORMATION 3
CONTENTS 4
ENGINE MANAGEMENT SYSTEM 5
ECU PROGRAMMING 6
ECU diagnostic connectors 6
Reporting system faults 6
P1 and P2 Connectors 7
Pin identification (P1 or P2) 7
Disconnecting the ECU 7
Reconnecting the ECU 7
SERVICING CONNECTORS AND 8
COUPLERS 8
Cleaning 8
Disconnecting 8
Connecting 8
BAROMETRIC PRESSURE SENSOR 9
CAUTION: 10
COOLANT TEMPERATURE SENSOR 11
AIR TEMPERATURE SENSOR 11
CRANKSHAFT POSITION SENSOR 12
IDLE AIR CONTROL VALVE (IACV) 13
IACV Stepped positions 13
± 10% Ohms 14
12.5 VDC 15
FUEL PUMP AND FUEL PRESSURE 16
REGULATOR 16
FUEL INJECTORS 18
COOLING FAN (ATV 19
CANNONDALE DIAGNOSTIC AND 20
MAINTENANCE TOOL VERSION 2.0 20
Verifying COM port setup 22
COMMON PROBLEMS 22
Weak vehicle battery 22
EMS not powered-up 22
INTERPRETING ERROR MESSAGES 23
Failed to Unlock System 125 23
I/O Error Message 24
OTHER MESSAGES 24
Progress Indicator 24
Retrying Checksum 25
COMMUNICATION CABLE 26
) (Factory dyno value) 27
30202.ccf 28
8/14/02 30
“Reading a map and variables” 32
To receive 32
“Changing a map” 33
CALIBRATIONS 36
To update calibrations 37
ECU MONITOR 38
Using the ECU Monitor 38
ECU Parameters (defined) 38
READING FAULT CODES 39
To read fault codes 39
Fault Report window 40
FAULT TROUBLESHOOTING 41
SYSTEM VOLTAGE 42
FUEL PUMP 43
IGNITION COIL 44
COOLING FAN (ATV ONLY) 45
± 0.50 Ohms at 20 ± 46
COOLANT SENSOR 52
COMPONENT TESTING (NON-EFI) 56
FLYWHEEL 57
ENGINE STOP BUTTON 57
RUN W/LTS 58
GREEN VIOLET YELLOW 58
STARTER MOTOR 59
Printed : 8/14/02 60

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Black Widow Security BW 2800 Service Manual Page 25

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