Caterpillar C6.6 Diesel Engine Troubleshooting Manual (S/N 666)


Covers: Caterpillar C6.6 Industrial Diesel Engine w/ Serial Number Prefix 666
Format: PDF
Compatibility: Windows/Mac/Tablet

Covers troubleshooting and fault code diagnostics for Cat C6.6 industrial engines with serial prefix “666.”


Electronic Troubleshooting
System Overview
Electronic Service Tools
Indicator Lamps
Replacing the ECM
Sensors and Electrical Connectors
Engine Wiring Information
ECM Harness Connector Terminals
Programming Parameters
Test ECM Mode
Factory Passwords
Flash Programming
Injector Trim File
Mode Switch Setup
Throttle Setup
Multiposition Switch Setup
Customer Specified Parameters
Customer Specified Parameters Table
System Configuration Parameters
Customer Specified Parameters Worksheet
Troubleshooting without a Diagnostic Code
Alternator Noise
Alternator Will Not Charge
Can Not Reach Top Engine RPM
Coolant in Engine Oil
Coolant Temperature Is Too High
ECM Will Not Accept Factory Passwords
ECM Will Not Communicate with Other Systems or Display Modules
Electronic Service Tool Will Not Communicate with ECM
Engine Cranks but Will Not Start
Engine Has Early Wear
Engine Misfires, Runs Rough or Is Unstable
Engine Oil in Cooling System
Engine Speed Does Not Change
Engine Stalls at Low RPM
Engine Vibration
Engine Will Not Crank
Excessive Black Smoke
Excessive Engine Oil Consumption
Excessive Valve Lash
Excessive White Smoke
Intake Air Temperature Is Too High
Intermittent Engine Shutdown
Intermittent Low Power or Power Cutout
Low Engine Oil Pressure
Low Power_Poor or No Response to Throttle
Mechanical Noise (Knock) in Engine
Noise Coming from Cylinder

Troubleshooting with a Diagnostic Code
Diagnostic Code Cross Reference
No Diagnostic Codes Detected

Troubleshooting with an Event Code
Event Codes
E172 High Air Filter Restriction
E194 High Exhaust Temperature
E232 High Fuel_Water Separator Water Level
E360 Low Engine Oil Pressure
E361 High Engine Coolant Temperature
E362 Engine Overspeed
E396 High Fuel Rail Pressure
E398 Low Fuel Rail Pressure
E539 High Intake Manifold Air Temperature
E2143 Low Engine Coolant Level

Diagnostic Functional Tests
5 Volt Sensor Supply Circuit – Test
Analog Throttle Position Sensor Circuit – Test
CAN Data Link Circuit – Test
Data Link Circuit – Test
Digital Throttle Position Sensor Circuit – Test
ECM Memory – Test
Electrical Connectors – Inspect
Engine Pressure Sensor Open or Short Circuit – Test
Engine Speed_Timing Sensor Circuit – Test
Engine Temperature Sensor Open or Short Circuit – Test
Engine Temperature Sensor Open or Short Circuit – Test 1
Fuel Rail Pump Solenoid – Test
Idle Validation Switch Circuit – Test
Ignition Keyswitch Circuit and Battery Supply Circuit – Test
Indicator Lamp Circuit – Test
Injector Data Incorrect – Test
Injector Solenoid Circuit – Test
Mode Selection Circuit – Test
PTO Switch Circuit – Test
Starting Aid (Glow Plug) Relay Circuit – Test
Throttle Switch Circuit – Test

SKU: MPM10064 Category: Tags: , ,

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