1999-2001 Isuzu NKR, NPR, NQR ABS Workshop Manual

Field service reference for Isuzu NKR, NPR, NQR Anti-Lock Brake System (ABS) diagnostic procedures, troubleshooting, and component information. Abe008

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Document Details

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Document Number / Seller:
24456 / Harold Garcia
File Size:
104.00 MB
File Type:
ZIP
Language:
English
Printable:
Yes
Category:
Truck
Last updated / verified
Oct 8, 2025

Models Covered & Key Technical Specifications

1999-2001 Isuzu NKR, NPR, NQR ABS Workshop Manual

Anti-Lock Brake System (ABS) Manual | Reference Documentation

  • Approved Thermal Envelope: 15-30C defines the operational limit Framework.
  • Baseline RPM Specs: 500 RPM signifies the minimum operational speed Parameters.
  • Primary Physical Specs: 2550 mm is the overall vehicle length Topology.
  • General Coupling Torques: 30 N-m -- signifies the torque for wheel speed sensor mounting Bounds.
  • Certified System Fill: 1.5 L is the brake fluid capacity Matrix.
  • Reference Cooling Specs: For optimal operation, 20 C represents the ambient temperature Standards.

Professional Workshop Service Manual & Technical Specifications

Reference-Grade Training Diagnostic Manual: Truck Manual for Isuzu NKR, NPR, NQR, covers 1999-01 Manual-Nexus

Asset-ID: 1999-2001 Isuzu ABS Manual // Design-Core: Truck / Anti-Lock Brake System Logic // Asset-ID: Workshop Manual.

Safely requiring

Identifier Value Calibration-Standards
Front Speed Sensor 22 N·m 2.2kgf·m/16lb·ft
Rear Speed Sensor 18 N·m 1.8kgf·m/13lb·ft
ABS EHCU 0-0.3V Not specified

Providing a structural breakdown of:

  • Contents
  • System Components
  • Diagnostic Trouble Codes (DTCs)
  • Symptom Diagnosis
  • Unit Inspection Procedure

Introduction This manual details the Anti-lock Brake System (ABS) for Isuzu NKR, NPR, and NQR trucks from 1999 to 2001. It covers system description, components, diagnosis, and inspection procedures.

System Overview

The Anti-lock Brake System (ABS) is designed to prevent wheel lock-up during braking, enhancing vehicle control. It comprises the Electronic Hydraulic Control Unit (EHCU), four wheel speed sensors, and an ABS warning light.

Diagnostic Procedures

The manual outlines diagnostic steps based on symptoms and Diagnostic Trouble Codes (DTCs). It includes flowcharts and specific tests, such as those using the Tech 2 scan tool, to pinpoint malfunctions.

Inspection and Repair

Detailed inspection procedures for components like speed sensors, EHCU, and related circuits are provided. This ensures correct diagnosis and repair of ABS issues.

This manual documents torque specifications for the wheel speed sensors to ensure proper assembly.

FAQ

What **necessary** electrical values are needed for troubleshooting ABS circuits? keyboard_arrow_down

10-16 V is the specified voltage for most ABS circuits when the ignition is ON, and 0-0.3V when OFF, as indicated in the EHCU connector pin-out checks.

Determine the **recommended** calibration settings for the wheel speed sensors. keyboard_arrow_down

200 mV or more is the AC voltage specified for FL and FR speed sensors when turning the wheel at 0.5 RPS, and 0.2-4.5V for RL and RR speed sensors.

What **calibrated** clearance measurements are critical for ABS function? keyboard_arrow_down

While specific clearance measurements are not detailed, checking for play in wheel bearings and sensor rotors is essential, as described in the speed sensor inspection procedures.

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Reviews (2)

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This workshop manual provided me with all the necessary information to troubleshoot the ABS in my Isuzu Elf. The layout is clear and intuitive, making it easy to find the details I needed. The download process was seamless, and I received the link almost instantly! Highly recommend!
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As a mechanic, I found this ABS workshop manual incredibly useful. It covers all aspects of the system thoroughly. I had a question after purchase, and the support team responded quickly and professionally. The download was smooth, too!