Name: MACK TruckS V-MAC II VMAC2 VMACII Service Repair Manual
Brand: Mack
SKU: E7 Models
Price: 16.99 USD
Availability: InStock

MACK TruckS V-MAC II VMAC2 VMACII Service Repair Manual

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E7 Models
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This manual pertains to trucks equipped with the V-MAC II (Vehicle Management and Control Architecture II) electronic engine control system, specifically for E7 Engines from 1995 and later models. Trucks, a manufacturer with a rich heritage in heavy-duty vehicles, engineered the V-MAC II system to provide comprehensive engine management, integrating functions such as fuel injection control, timing advance, and engine protection. Notable features include sophisticated diagnostics, speed control capabilities, and communication via industry standards like J1708, all designed to enhance reliability and operational efficiency for professional truck technicians, fleet maintenance personnel, and owner-operators.

This comprehensive service and repair manual in English provides detailed guidance for the V-MAC II Electronic Engine Control System. It covers a wide array of essential topics, including the V-MAC II module, fuel injection system components, various sensors, and cabin controls. The manual offers in-depth diagnostic procedures, troubleshooting by code and symptom, and step-by-step repair and adjustment instructions for connectors, terminals, and sensors. Its purpose is to equip users with the knowledge necessary to effectively maintain, diagnose, and repair trucks, ensuring optimal performance and minimizing downtime.

MACK TRUCKS V-MAC II VMAC2 VMACII SERVICE MANUAL

ISSUE: 1998

DESCRIPTION AND OPERATION . . . . . . . . . . . . .
GENERAL INFORMATION . . . . . . . . . . . . . . . .
COMPONENT DESCRIPTIONS . . . . . . . . . . . .
V-MAC II Module . . . . . . . . . . . . . . . . . . . . .
Fuel Injection Pump . . . . . . . . . . . . . . . . . . .
Fuel Rack Actuator . . . . . . . . . . . . . . . . . . .
ECONOVANCE Timing Advance Mechanism
SYSTEM SENSORS . . . . . . . . . . . . . . . . . . . . .
RPM/TDC (Engine Position) Sensor . . . . . .
MPH (Road Speed) Sensor . . . . . . . . . . . . .
Timing Event Marker (TEM) . . . . . . . . . . . . .
Coolant Temperature Sensor . . . . . . . . . . . .
Intake-Manifold Air Temperature Sensor . . .
Engine Oil Pressure Sensor . . . . . . . . . . . . .
Coolant Level Sensor . . . . . . . . . . . . . . . . . .
Throttle Position Sensor (TPS) . . . . . . . . . .
CAB AND DASHBOARD SWITCHES . . . . . . . .
Speed Control Switches . . . . . . . . . . . . . . . .
Informational Switches . . . . . . . . . . . . . . . . .
Shutdown Override Switch . . . . . . . . . . . . . .
Torque Limiting Switch . . . . . . . . . . . . . . . . .
SYSTEM LAMPS . . . . . . . . . . . . . . . . . . . . . . . .
Electronic Malfunction Lamp . . . . . . . . . . . .
Shutdown Indicator Lamp and Alarm . . . . . .
SYSTEM CONNECTORS . . . . . . . . . . . . . . . . .
V-MAC II Module Connectors . . . . . . . . . . .
Fuel Injection Pump Connector . . . . . . . . . .
Serial Communication Port . . . . . . . . . . . . .
31- and 23-Pin Bulkhead Connectors . . . . .
Sensor Connectors . . . . . . . . . . . . . . . . . . .
MAJOR FUNCTIONS CHART . . . . . . . . . . . . . .
Fuel Control . . . . . . . . . . . . . . . . . . . . . . . . .
Timing Control . . . . . . . . . . . . . . . . . . . . . . .
Speed Control/Cruise Control . . . . . . . . . . .
Road Speed Limiting . . . . . . . . . . . . . . . . . .
Engine Protection Shutdown . . . . . . . . . . . .
Idle Shutdown . . . . . . . . . . . . . . . . . . . . . . .
Accessory Relay Control. . . . . . . . . . . . . . . .
ON/OFF Fan Control. . . . . . . . . . . . . . . . . . .
DIAGNOSTIC TOOLS & PROCEDURES . . . . . . . .
DIAGNOSTIC SOFTWARE . . . . . . . . . . . . . . . .
Software Functions . . . . . . . . . . . . . . . . . . .
SAE/ATA Serial Line . . . . . . . . . . . . . . . . . .
DIAGNOSTIC TOOLS . . . . . . . . . . . . . . . . . . . .
Digital Multimeter . . . . . . . . . . . . . . . . . . . . .
Pro-Link 9000 . . . . . . . . . . . . . . . . . . . . . . . .
IBM-Compatible PC . . . . . . . . . . . . . . . . . . .
J 1708 Serial Data Link Adaptor . . . . . . . . .
J 38500-63 Serial Link Jumper . . . . . . . . . .
DIAGNOSTIC BLINK CODES . . . . . . . . . . . . .
Determining Diagnostic Blink Codes . . . . .
Diagnostic Blink Code Identification Chart .
TROUBLESHOOTING PROCEDURES . . . . .
Determining That a Fault Exists . . . . . . . . .
Locating Diagnostic Blink Code Information
Performing Diagnostic Tests . . . . . . . . . . .
SERVICE HINTS . . . . . . . . . . . . . . . . . . . . . . .
Test Procedures . . . . . . . . . . . . . . . . . . . . .
Wire and Connectors . . . . . . . . . . . . . . . . .
System Components . . . . . . . . . . . . . . . . .
V-MAC II Module . . . . . . . . . . . . . . . . . . . .
Engine Shutdown . . . . . . . . . . . . . . . . . . . .
BLINK CODE DIAGNOSTICS . . . . . . . . . . . . . . . .
DIAGNOSTIC BLINK CODE 1-1 OR 1-2 . . . . .
DIAGNOSTIC BLINK CODE 1-7 . . . . . . . . . . .
DIAGNOSTIC BLINK CODE 1-8 . . . . . . . . . . .
DIAGNOSTIC BLINK CODE 2-1 OR 2-2 . . . . .
DIAGNOSTIC BLINK CODE 2-3 OR 2-4 . . . . .
DIAGNOSTIC BLINK CODE 3-2 . . . . . . . . . . .
DIAGNOSTIC BLINK CODE 3-4 . . . . . . . . . . .
DIAGNOSTIC BLINK CODE 3-5, BASIC . . . . .
DIAGNOSTIC BLINK CODE 3-5, ELECTRICAL
DIAGNOSTIC BLINK CODE 3-5, ADVANCED
DIAGNOSTIC BLINK CODE 4-1, 4-2 OR 4-3 .
DIAGNOSTIC BLINK CODE 5-1 . . . . . . . . . . .
DIAGNOSTIC BLINK CODE 5-2 . . . . . . . . . . .
DIAGNOSTIC BLINK CODE 5-3 . . . . . . . . . . .
DIAGNOSTIC BLINK CODE 5-4 . . . . . . . . . . .
DIAGNOSTIC BLINK CODE 5-5 . . . . . . . . . . .
DIAGNOSTIC BLINK CODE 5-6 . . . . . . . . . . .
DIAGNOSTIC BLINK CODE 5-7 OR 5-8 . . . . .
DIAGNOSTIC BLINK CODE 5-9 OR 5-10 . . . .
DIAGNOSTIC BLINK CODE 6-5 . . . . . . . . . . .
DIAGNOSTIC BLINK CODE 6-6 . . . . . . . . . . .
DIAGNOSTIC BLINK CODE 7-1 . . . . . . . . . . .
DIAGNOSTIC BLINK CODE 7-5 . . . . . . . . . . .
DIAGNOSTIC BLINK CODE 7-6 . . . . . . . . . . .
DIAGNOSTIC BLINK CODE 7-7 . . . . . . . . . . .
SYMPTOM RELATED DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BUFFERED MPH (SPEEDOMETER SIGNAL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LOW COOLANT LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INTERMITTENT PROBLEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LOW OIL PRESSURE WITH DRIVER ALARM . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INCORRECT OIL PRESSURE VERSUS GAUGE . . . . . . . . . . . . . . . . . . . . . . . . . .
INJECTION PUMP RPM (ENGINE SPEED) SENSOR . . . . . . . . . . . . . . . . . . . . . . .
ENGINE BRAKE VERBAL COMPLAINT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BUFFERED RPM (TACH DRIVE OUTPUT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ON/OFF FAN CONTROL VERBAL COMPLAINT . . . . . . . . . . . . . . . . . . . . . . . . . . .
SWITCH CIRCUIT DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SWITCH CIRCUIT FAILURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SYMPTOM RELATED TROUBLESHOOTING CHART . . . . . . . . . . . . . . . . . . . . . . .
REPAIR AND ADJUSTMENT PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONNECTOR REPAIR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deutsch Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V-MAC II Module, Engine Oil Pressure, Intake Manifold Temperature, and
Coolant Temperature Sensors and Connectors . . . . . . . . . . . . . . . . . . . . . . .
MPH, RPM/TDC, Throttle Position, TEM Sensors and Connectors and Bulkhead
Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TERMINAL REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the J 35688 Crimping Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Soldering Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CLUTCH SWITCH ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SENSOR ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RPM/TDC Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MPH Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEM Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RESETTING LOW IDLE SPEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V-MAC I AND II E7 ENGINE PARAMETERS (1995 AND LATER) . . . . . . . . . . . . . .
SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TOOL LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SAE MESSAGE DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COMMUNICATION STANDARDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .