Caterpillar 3126 Fault Code Manual (BKD, G3E, DPF, 1AJ, 8YL, CKM, CRP, 7AS, 8SZ, 9SZ)

Caterpillar 3126 Fault Code Manual (BKD/G3E/DPF/1AJ/8YL/CKM/CRP/7AS/8SZ/9SZ)

Factory printed Caterpillar 3126B and 3126E Fault Code / Electronic Troubleshooting manual.  Includes fault codes & wire diagrams. Helps reduce diagnostic times for your electronic diagnostics.  Whether you need to chase fault codes, perform diagnostic functional testing, view wire diagrams for a specific device, or a multitude of other diagnostic needs, this surely is the best manual to fit your needs.  For use with engine serial code prefix options as noted above & below.

• Caterpillar 3126 E and B models Electronic Troubleshooting / Fault Code Manual
• Engine Serial Number Prefix: BKD, G3E, DPF, 1AJ, 8YL, CKM, CRP, 7AS, 8SZ, 9SZ

Caterpillar 3126 Coverage:

1. Electronic troubleshooting
   • System Overview
   • ECM Replacement
   • Sensors & Electrical Connectors
2. Programming Parameters
   • Dyno Mode
   • Test ECM Mode
   • Customer Passwords
   • ECM Date/Time Stamped Info
   • ECM Snapshot
   • Factory Passwords
   • Flash Programming
   • Service Info Report
3. Customer Specified Parameters
   • Customer Specified Parameters, Table & Worksheet
   • Cruise Control
   • Data Link
   • Dedicated PTO Parameters
   • Driver Reward Parameters
   • ECM ID Parameters
   • Engine/Gear Parameters
   • Engine Monitoring
   • Idle Parameters
   • Input Selections
   • Maintenance Parameters
   • Output Selections
   • Security Access Parameters
   • Selected Engine Rating
   • Smart Idle Parameters
   • Timer Parameters
   • Trip Parameters
   • Vehicle Activity Report Parameters
   • Vehicle Speed Parameters
4. System Configuration Parameters
5. Caterpillar 3126 Troubleshooting w/o diagnostic code
   • Cannot Reach Top Engine RPM
   • Cannot Reach Vehicle Speed Limit
   • Check Engine Lamp or Warning Lamp Inoperative
   • Cooling Fan Always On
   • Cruise Control, Idle or PTO Cannot Be Set
   • Driver Questionnaire & Response
   • ECM Won’t Accept Factory Passwords
   • Electronic Service Tool Won’t Communicate With ECM
   • Engine Cranks But No Start
   • Engine Misfires, Runs Rough or is Unstable
   • Engine Brake Won’t Turn On
   • Engine Vibration
   • Engine Won’t Crank
   • Excessive Black Smoke
   • Excessive Fuel Consumption
   • Excessive White Smoke
   • Intermittent Cruise Control, Idle or PTO Kickout
   • Intermittent Low Power or Power Cut Out
   • Low Power, Poor or No Throttle Response
   • Poor Acceleration or Response
6. Caterpillar 3126 Troubleshooting w/ diagnostic code
   • All Engine Related Fault Codes
7. Caterpillar 3126 Diagnostic functional tests
   • 5 Volt Engine Pressure Sensor Supply Circuit Test
   • Throttle Sensor Circuit Test
   • Air Inlet Shutoff Circuit Test
   • Data Link Circuit Test
   • Aux. Brake Circuit Test
   • Check Engine Lamp Circuit Test
   • Clutch Pedal Position Switch Test
   • Coolant Level Sensor Test
   • Cooling Fan Circuit & AC High Pressure Switch Test
   • Cruise Control Switch Test
   • Diagnostic Enable Switch Circuit Test
   • Eaton Top 2 Transmission Circuit  Test
   • ECM Memory Test
   • Electrical Connectors Inspect
   • Engine Coolant Diverter Circuit Test
   • Engine Pressure Sensor Open / Short Circuit  Test
   • Engine Running Output Circuit Test
   • Engine Shutdown Output Test
   • Engine Speed / Timing Sensor Circuit Test
   • Engine Temperature Sensor Open / Short Circuit Test
   • Fan Override Switch Circuit Test
   • Idle Shutdown Timer Test
   • Ignition Key Switch & Battery Supply Circuit Test
   • Ignore Brake / Clutch Circuit Test
   • Injector Solenoid Circuit Test
   • Intake Valve Actuation System Oil Pressure Circuit Test
   • Intake Valve Actuator & Response Circuit Test
   • Multi-Torque Test
   • Neutral Switch Circuit Test
   • Powertrain Data Link Circuit Test
   • PTO Engine RPM Set Speed Circuit Test
   • PRO Shutdown Timer Test
   • PTO Switch Circuit Test
   • PTO Switch ON Lamp Circuit Test
   • Remote PTO Accelerator Position Sensor Circuit Test
   • Compression Brake Solenoid Circuit Test
   • Service Brake Pedal Position Circuit Test (both circuits)
   • Starting Aid Output & Switch Circuit Test
   • Tachometer Circuit Test
   • Torque Limit Switch Circuit Test
   • 2 Speed Axle Switch Circuit Test
   • Vehicle Speedometer Circuit Test
   • Warning Lamp Circuit Test
8. Calibration procedures
   • Engine Speed / Timing Sensor Calibration
   • Injector Code Calibration
   • Vehicle Speed Circuit Calibration

Can be used with or without the use of Cat ET, Pro-Link or other scan tools.  While the proper scan equipment will speed diagnostic times, much testing can still be performed using only a multi-meter.

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Caterpillar 3126

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