Mack V-MAC III Electronic Control System Diagnostic Manual 

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This manual provides diagnostic and troubleshooting procedures for the Mack V-MAC III Electronic Control System. Use the Mack V-MAC III Electronic Control System Diagnostic Manual to diagnose fault codes. View the Mack Mack V-MAC III Electronic Control System Diagnostic Manual on your computer/tablet or print off pages as needed.

Topics in the Mack V-MAC III Electronic Control System Diagnostic Manual:

INTRODUCTION
DESCRIPTION AND OPERATION
V-MAC III SYSTEM OVERVIEW
Sensors
Cab and Dashboard Switches
V-MAC III MAJOR FUNCTIONS
TROUBLESHOOTING
SYSTEM DIAGNOSTICS
Diagnostic Tools
Electrical Terms
Troubleshooting Procedures
Reading Diagnostic Fault Codes
Fault Codes
SAE Message Descriptions
BLINK CODE 1-1 — ENGINE OIL PRESSURE (EOP) SENSOR (ASET™ IEGR ENGINE)
BLINK CODE 1-1 — ENGINE OIL PRESSURE (EOP) SENSOR (ASET™ CEGR ENGINE)
BLINK CODE 1-2 — BAROMETRIC PRESSURE SENSOR
BLINK CODE 1-3 — FUEL TEMPERATURE (FT) SENSOR (ASET™ IEGR ENGINE)
BLINK CODE 1-3 — FUEL TEMPERATURE (FT) SENSOR (ASET™ CEGR ENGINE)
BLINK CODE 1-4 — AMBIENT AIR TEMPERATURE (AAT) SENSOR (ASET™ IEGR ENGINE)
BLINK CODE 1-4 — AMBIENT AIR TEMPERATURE (AAT) SENSOR (ASET™ CEGR ENGINE)
BLINK CODE 1-6 — STARTER ENGAGED INPUT
BLINK CODE 1-7 — COOLANT LEVEL SENSOR (ASET™ IEGR ENGINE)
BLINK CODE 1-7 — COOLANT LEVEL SENSOR (ASET™ CEGR ENGINE)
BLINK CODE 1-8 — ESTIMATED % FAN SPEED (ASET™ IEGR ENGINE)
BLINK CODE 1-8 — ESTIMATED % FAN SPEED (ASET™ CEGR ENGINE)
BLINK CODE 1-10 — AUXILIARY COOLING RELAY OUTPUT
BLINK CODE 2-1 — ENGINE COOLANT TEMPERATURE (ECT) SENSOR (ASET™ IEGR ENGINE)
BLINK CODE 2-1 — ENGINE COOLANT TEMPERATURE (ECT) SENSOR (ASET™ CEGR ENGINE)
BLINK CODE 2-2 — BOOST AIR PRESSURE (BAP) SENSOR (ASET™ IEGR ENGINE)
BLINK CODE 2-2 — BOOST AIR PRESSURE (BAP) SENSOR (ASET™ CEGR ENGINE)
BLINK CODE 2-3 — INTAKE AIR TEMPERATURE (IAT) SENSOR (ASET™ IEGR ENGINE)
BLINK CODE 2-3 — INTAKE MANIFOLD TEMPERATURE (IMT) SENSOR (ASET™ CEGR ENGINE)
BLINK CODE 2-4 — TRANSMISSION OIL TEMPERATURE (TOT) SENSOR
BLINK CODE 2-5 — FRONT DRIVE AXLE OIL TEMPERATURE (FAOT) SENSOR
BLINK CODE 2-6 — REAR DRIVE AXLE OIL TEMPERATURE (RAOT) SENSOR
BLINK CODE 2-7 — ENGINE OIL TEMPERATURE (EOT) SENSOR (ASET™ IEGR ENGINE)
BLINK CODE 2-7 — ENGINE OIL TEMPERATURE (EOT) SENSOR (ASET™ CEGR ENGINE)
BLINK CODE 2-8 — INTAKE AIR TEMPERATURE (ASET™ IEGR ENGINE)
BLINK CODE 2-8 — INTAKE AIR TEMPERATURE (ASET™ CEGR ENGINE)
BLINK CODE 2-9 — INTAKE AIR HUMIDITY (ASET™ IEGR ENGINE)
BLINK CODE 2-9 — INTAKE AIR HUMIDITY (ASET™ CEGR ENGINE)
BLINK CODE 3-1 — EXHAUST TEMPERATURE (ET) SENSOR
BLINK CODE 3-2 — ENGINE SPEED/TIMING (RPM/TDC) SENSOR (ASET™ IEGR ENGINE)
BLINK CODE 3-2 — ENGINE SPEED/TIMING (RPM/TDC) SENSOR (ASET™ CEGR ENGINE)
BLINK CODE 3-3 — REDUNDANT ENGINE SPEED MONITORING (ASET™ IEGR ENGINE)
BLINK CODE 3-3 — REDUNDANT ENGINE SPEED MONITORING (ASET™ CEGR ENGINE)
BLINK CODE 3-4 — ENGINE POSITION (EP) SENSOR (ASET™ IEGR ENGINE)
BLINK CODE 3-4 — ENGINE POSITION (EP) SENSOR (ASET™ CEGR ENGINE)
BLINK CODE 3-5 — ENGINE BRAKE OUTPUT #1 (ASET™ IEGR ENGINE)
BLINK CODE 3-5 — ENGINE BRAKE OUTPUT #1 (ASET™ CEGR ENGINE)
BLINK CODE 3-6 — ENGINE BRAKE OUTPUT #2 (ASET™ IEGR ENGINE)
BLINK CODE 3-6 — ENGINE BRAKE OUTPUT #2 (ASET™ CEGR ENGINE)
BLINK CODE 3-8 — TRANSMISSION SPLITTER POSITION MECHANICAL MALFUNCTION
BLINK CODE 3-10 — ENGINE BRAKE OUTPUT #3 (ASET™ CEGR ENGINE)
BLINK CODE 4-1 — VEHICLE SPEED (MPH) SENSOR (VSS)
BLINK CODE 4-2 — FAN CLUTCH OUTPUT (ASET™ IEGR ENGINE)
BLINK CODE 4-2 — FAN CLUTCH OUTPUT (ASET™ CEGR ENGINE)
BLINK CODE 4-3 — AUXILIARY OUTPUT #1
BLINK CODE 4-4 — AUXILIARY OUTPUT #2
BLINK CODE 4-5 — CCRS WASTEGATE OPERATION (ASET™ IEGR ENGINE)
BLINK CODE 4-5 — VARIABLE TURBINE GEOMETRY (VTG) POSITION SENSOR (ASET™ CEGR ENGINE)
BLINK CODE 4-6 — TACHOMETER DRIVE
BLINK CODE 4-7 — SPEEDOMETER DRIVE
BLINK CODE 4-8 — CUSTOM DEFINED STATEMENT FAULT
BLINK CODE 4-9 — EGR VALVE MECHANISM (ASET™ CEGR ENGINE)
BLINK CODE 4-10 — PARALLEL FAN CIRCUIT (ASET™ IEGR ENGINE)
BLINK CODE 5-1 — THROTTLE POSITION (TP) SENSOR
BLINK CODE 5-2 —THROTTLE POSITION (TP) SENSOR REFERENCE VOLTAGE
BLINK CODE 5-3 — SHUTDOWN LAMP AND DRIVER ALARM
BLINK CODE 5-5 — ELECTRONIC MALFUNCTION LAMP (EML)
BLINK CODE 5-6 — SPARE RELAY #3
BLINK CODE 5-8 — EGR TEMPERATURE (ASET™ CEGR ENGINE)
BLINK CODE 5-9 — EGR MASS AIR FLOW (ASET™ CEGR ENGINE)
BLINK CODE 6-1 — FUEL LEVEL (FL) SENSOR
BLINK CODE 6-2 — TURBOCHARGER WHEEL SPEED (TWS) SENSOR(ASET™ CEGR ENGINE)
BLINK CODE 6-3 — J1587 SERIAL DATA LINE (ASET™ IEGR ENGINE)
BLINK CODE 6-3 — J1587 SERIAL DATA LINE (ASET™ CEGR ENGINE)
BLINK CODE 6-4 — J1939 SERIAL DATA LINE
BLINK CODE 6-4 — J1939 SERIAL DATA LINE (ASET™ CEGR ENGINE)
BLINK CODE 6-5 — LOSS OF SERIAL DATA COMMUNICATION (ASET™ IEGR ENGINE)
BLINK CODE 6-5 — LOSS OF SERIAL DATA COMMUNICATION (ASET™ CEGR ENGINE)
BLINK CODE 6-6 — INTERNAL COMMUNICATIONS
BLINK CODE 6-7 — ENGINE ELECTRONIC CONTROL UNIT (EECU) POWER RELAY (CV, LE, MR) (ASET™ IEGR ENGINE)
BLINK CODE 6-7 — ENGINE ELECTRONIC CONTROL UNIT (EECU) POWER RELAY (DM, RB, RD) (ASET™ IEGR ENGINE)
BLINK CODE 6-7 — ENGINE ELECTRONIC CONTROL UNIT (EECU) POWER RELAY (ASET™ CEGR ENGINE)
BLINK CODE 6-8 — ALLISON HD TRANSMISSION J1939 SERIAL DATA LINE
BLINK CODE 6-9 — OTHER ECU AFFECTING OPERATION
BLINK CODE 7-1 — SERVICE BRAKE
BLINK CODE 7-2 — PARK BRAKE (MR)
BLINK CODE 7-2 — PARK BRAKE (CH, CL, CV, CX, DM, LE, RD)
BLINK CODE 7-3 — SPEED CONTROL SET SWITCH
BLINK CODE 7-4 — SPEED CONTROL RESUME SWITCH
BLINK CODE 7-5 — VEHICLE ELECTRONIC CONTROL UNIT (VECU) INPUT VOLTAGE
BLINK CODE 7-6 — ENGINE ELECTRONIC CONTROL UNIT (EECU) SWITCHED VOLTAGE (ASET™ IEGR ENGINE)
BLINK CODE 7-6 — ENGINE ELECTRONIC CONTROL UNIT (EECU) SWITCHED VOLTAGE (ASET™ CEGR ENGINE)
BLINK CODE 7-7 — EXHAUST TEMPERATURE REFERENCE THERMOCOUPLE
BLINK CODE 7-9 — VARIABLE TURBINE GEOMETRY (VTG) CONTROL VALVE (ASET™ CEGR ENGINE)
BLINK CODES 8-1 THROUGH 8-6 — ELECTRONIC UNIT PUMP (EUP) (ASET™ IEGR ENGINE)
BLINK CODE 8-1 — ELECTRONIC UNIT PUMP (EUP) (ASET™ CEGR ENGINE)
BLINK CODE 8-2 — ELECTRONIC UNIT PUMP (EUP) (ASET™ CEGR ENGINE)
BLINK CODE 8-3 — ELECTRONIC UNIT PUMP (EUP) (ASET™ CEGR ENGINE)
BLINK CODE 8-4 — ELECTRONIC UNIT PUMP (EUP) (ASET™ CEGR ENGINE)
BLINK CODE 8-5 — ELECTRONIC UNIT PUMP (EUP) (ASET™ CEGR ENGINE)
BLINK CODE 8-6 — ELECTRONIC UNIT PUMP (EUP) (ASET™ CEGR ENGINE)
BLINK CODE 8-9 — ELECTRONIC UNIT PUMP (EUP) SOLENOID BOOST VOLTAGE (ASET™ IEGR ENGINE)
BLINK CODE 9-1 — TRANSPORT PROTOCOL PROGRAMMING FAILURE
BLINK CODE 9-2 — POWER RESET WITHOUT KEY SWITCH (ASET™ IEGR ENGINE)
BLINK CODE 9-2 — POWER RESET WITHOUT KEY SWITCH (ASET™ CEGR ENGINE)
BLINK CODE 9-3 — AFTERCOOLER OUTLET TEMPERATURE (AOT) SENSOR (ASET™ CEGR ENGINE)
BLINK CODE 9-5 — COMPRESSOR DISCHARGE TEMPERATURE (CDT) SENSOR (ASET™ CEGR ENGINE)
BLINK CODE 9-8 — AUXILIARY OUTPUT DEVICE #1 (ASET™ CEGR ENGINE)
BLINK CODE 9-9 — AUXILIARY OUTPUT DEVICE #2 (ASET™ CEGR ENGINE)
BLINK CODE 9-10 — AUXILIARY OUTPUT DEVICE #3 (ASET™ CEGR ENGINE)
BLINK CODE 10-1 — INTERNAL SENSOR VOLTAGE (ASET™ CEGR ENGINE)
BLINK CODE 10-2 — 5 VOLT SUPPLY (ASET™ CEGR ENGINE)
BLINK CODE 10-3 — SENSOR SUPPLY VOLTAGE #1 (ASET™ CEGR ENGINE)
BLINK CODE 10-4 — SENSOR SUPPLY VOLTAGE #2 (ASET™ CEGR ENGINE)
BLINK CODE 10-5 — FUEL FILTER DIFFERENTIAL PRESSURE
(ASET™ CEGR ENGINE)
BLINK CODE 10-6 — FUEL DELIVERY PRESSURE (ASET™ CEGR ENGINE)
BLINK CODE 10-7 — ODOMETER SAVE AREA FAILURE
BLINK CODE 10-8 — GPS POSITION DATA NOT RECEIVED
BLINK CODE 10-9 — VECU WATCHDOG TIMER RESET
(ASET™ CEGR ENGINE)
BLINK CODE 10-10 — EECU WATCHDOG TIMER RESET
(ASET™ CEGR ENGINE)
INTERMITTENT PROBLEMS
INTERMITTENT PROBLEMS NO DIAGNOSTIC BLINK CODE
ENGINE SPEED HIGH
ENGINE SPEED HIGH NO DIAGNOSTIC BLINK CODE
LOW OIL PRESSURE WITH DRIVER ALARM (IEGR ENGINE)
LOW OIL PRESSURE WITH DRIVER ALARM NO DIAGNOSTIC BLINK CODE
(ASET™ IEGR ENGINE)
LOW OIL PRESSURE WITH DRIVER ALARM (CEGR ENGINE)
LOW OIL PRESSURE WITH DRIVER ALARM NO DIAGNOSTIC BLINK CODE
(ASET™ CEGR ENGINE)
INACCURATE OIL PRESSURE (IEGR ENGINE)
INACCURATE OIL PRESSURE NO DIAGNOSTIC BLINK CODE
(ASET™ IEGR ENGINE)
INACCURATE OIL PRESSURE (CEGR ENGINE)
INACCURATE OIL PRESSURE NO DIAGNOSTIC BLINK CODE
(ASET™ CEGR ENGINE)
ROAD SPEED HIGH
ROAD SPEED HIGH NO DIAGNOSTIC BLINK CODE
ENGINE COOLANT TEMPERATURE HIGH
ENGINE COOLANT TEMPERATURE HIGH NO DIAGNOSTIC BLINK CODE
FAN ALWAYS ON (CEGR ENGINE)
FAN ALWAYS ON NO DIAGNOSTIC BLINK CODE
(ASET™ CEGR ENGINE)
TRANSMISSION OIL TEMPERATURE HIGH
TRANSMISSION OIL TEMPERATURE HIGH NO DIAGNOSTIC BLINK CODE
Manual Transmission
Allison HD Automatic Transmission
EXHAUST TEMPERATURE HIGH
EXHAUST TEMPERATURE HIGH NO DIAGNOSTIC BLINK CODE
ENGINE CRANKS BUT WILL NOT START (IEGR ENGINE)
ENGINE CRANKS BUT WILL NOT START NO DIAGNOSTIC FAULT CODE
(ASET™ IEGR ENGINE)
ENGINE CRANKS BUT WILL NOT START (CEGR ENGINE)
ENGINE CRANKS BUT WILL NOT START NO DIAGNOSTIC FAULT CODE
(ASET™ CEGR ENGINE)
VIP DIGITAL DASH DISPLAY
VIP DIGITAL DASH DISPLAY NO DIAGNOSTIC FAULT CODE
SPECIFICATIONS
V-MAC III SENSOR SPECIFICATIONS
Aftercooler Outlet Temperature Sensor (AOT) Sensor (CEGR — #64MT450A)
Intake Air Temperature Sensor (CEGR — #64MT450A)
Intake Air Temperature Sensor (IEGR — #64MT2102)
Ambient Air Temperature (AAT) Sensor
Boost Air Pressure (BAP) Sensor (IEGR — #64MT2101)
Boost Air Pressure (BAP) Sensor (CEGR — #64MT446)
Compressor Discharge Temperature (CDT) Sensor
(CEGR — #64MT450A)
Engine Coolant Temperature (ECT) Sensor (#64MT2103M)
Engine Oil Pressure (EOP) Sensor
Engine Oil Temperature (EOT) Sensor (Oil Filter Pedestal Mounted
Sensor #64MT2107)
Engine Oil Temperature (EOT) Sensor (Oil Pan Mounted Sensor #64MT2113)
Engine Position (EP) Sensor
Engine Speed/Timing (RPM/TDC) Sensor
Front Drive Axle Oil Temperature (FAOT) Sensor
Fuel Temperature (FT) Sensor
Fuel Level (FL) Sensor
Intake Air Temperature and Humidity (IATH) Sensor (CEGR — #64MT463M)
Intake Air Temperature and Humidity (IATH) Sensor (CEGR — #64MT463M)
Intake Manifold Temperature (IMT) Sensor (IEGR)
Intake Manifold Temperature (IMT) Sensor (CEGR — #64MT450)
Rear Drive Axle Oil Temperature (RAOT) Sensor
Throttle Position (TP) Sensor
Transmission Oil Temperature (TOT) Sensor
Vehicle Speed (MPH) Sensor (VSS)
V-MAC III E-TECH™ ENGINE FUEL RATE SPECIFICATIONS
(1997 THROUGH 1999)
SCHEMATICS AND DIAGRAMS
SYSTEM CONNECTORS
6-Pin Serial Communication Port
9-Pin Serial Communication Port
Vehicle Electronic Control Unit (VECU) Connectors
Engine Electronic Control Unit (EECU) Connectors (ASET™ IEGR Engine)
Engine Electronic Control Unit (EECU) Connectors (ASET™ CEGR Engine)
CAB AND CHASSIS CONNECTORS
Cab-Chassis Bulkhead Connector
Cab-Transmission Harness Bulkhead Connector
Transmission-Engine Transition Connector
Cab-Chassis-Transmission Harness Hinge Point Connector
Cab-Chassis-Transmission Bulkhead Connector
Cab-Chassis Body Power Bulkhead Connector
Digital Gauge Cluster Connector
VIP Digital Dash Display Connector
J1939 Serial Port Connector Repair
Bulkhead Deutsch Connector and Serial Communication Port Repair
Weather-Pack Connector Repair
Metri-Pack Connector Repair
Micro-Pack Connector Repair
SPECIAL TOOLS AND EQUIPMENT
V-MAC SERVICE TOOLS

Covers: Mack V-MAC III (3) electronic control system diagnostics
Pages: 758
Format: PDF file
Compatibility: Windows/Mac/Tablet
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