2008-2009 Isuzu N Series Brake Workshop Manual – ABS ASR HSA Repair PDF
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Comprehensive 2008/2009MY Isuzu N Series brake workshop manual covering hydraulic brakes, ABS/ASR/EBD, parking brake, and Hill Start Aid. Includes service procedures, diagnostics, specifications, and exploded views for NHR, NLR, NLS, NMR, NNR, NPR, NPS, and NQR models.
Description
2008-2009 Isuzu N Series Brake Workshop Manual
This 2008-2009 Isuzu N Series Brake Workshop Manual is the complete brake section of the 2008/2009MY N Series service documentation. Published by Isuzu Motors Limited in December 2008 as the Fourth Edition, it covers hydraulic brake systems, anti-lock brake systems with anti-slip regulator, parking brakes, and Hill Start Aid for the full range of N Series commercial vehicles including NHR, NLR, NLS, NMR, NNR, NPR, NPS, and NQR models.
File Details
- Manual Type: Workshop Manual (Brake Section)
- Brand: Isuzu
- Model Series: N Series (2008/2009 Model Year)
- Language: English
- Page Count: 412 pages
- File Format: PDF
- Document Number: LGBRK-WE-0871
- Edition: Fourth Edition
- Publication Date: December 2008
- Publisher: Isuzu Motors Limited, Service Marketing Department
Chapters Covered
- 4B Brake
- Hydraulic Brake System β Description, Functional Inspection, Primary Specifications
- Brake Master Cylinder β Components, Removal, Disassembly, Reassembly, Installation, Tightening Torques
- Vacuum Brake Booster β Components, Removal, Installation, Inspection, Tightening Torques
- Hydraulic Brake Booster β Description, Maintenance Precautions, Components, Removal, Disassembly, Reassembly, Installation, Adjustment, Tightening Torques
- Hydraulic Brake Booster Fluid and Filter β Components Location Diagram, Removal, Installation
- Front Disc Brake β Components, Removal, Disassembly, Inspection, Reassembly, Installation, Tightening Torques
- Rear Disc Brake β Components, Removal, Disassembly, Inspection, Reassembly, Installation, Tightening Torques
- Front Drum Brake β Components, Removal, Disassembly, Inspection, Reassembly, Installation, Tightening Torques
- Rear Drum Brake (240/290mm) β Components, Removal, Inspection, Installation, Tightening Torques
- Rear Drum Brake (320mm) β Components, Removal, Inspection, Installation, Tightening Torques
- Rear Drum Brake (370mm) β Components, Removal, Disassembly, Inspection, Reassembly, Installation, Primary Specifications, Tightening Torques
- Rear Drum Brake (with M/AJ) β Components, Removal, Disassembly, Reassembly, Installation
- LSPV (Load Sensing Proportioning Valve) β Adjustment
- 4C1 Anti-Lock Brake (ABS)/Anti-Slip Regulator (ASR)
- ABS/ASR System β Precautions, Description and Operation, Circuit Diagram
- Procedure of Trouble Diagnosis
- Trouble Diagnosis Using the Scan Tool
- Function Inspection List
- Diagnostic System Check
- Warning Light/Indicator Light Diagnostics
- Check List of EHCU Connector Terminal
- Brake Basic Inspection
- Diagnostic Trouble Code List and all DTCs
- Symptom β ABS Controls
- Electronic Hydraulic Control Unit (EHCU) β Components, Removal, Installation, Programming
- Wheel Speed Sensor (Front and Rear)
- Sensor Rotor (Front and Rear)
- Sensor Harness (Rear Axle)
- Master Cylinder Pressure Sensor
- G Sensor
- 4D Parking Brake
- Parking Brake System β Description of Function and Operation
- Special Tool
- Parking Brake and Parking Brake Lever β Components, Removal, Installation
- Parking Brake (178, 190mm Type) β Components, Disassembly, Inspection, Reassembly
- Parking Brake (203mm Type) β Components, Disassembly, Inspection, Reassembly
- 4E Hill Start Aid (HSA)
- HSA System β Maintenance Precautions, Description of Function and Operation
- Components Location Diagram, Circuit Diagram
- Performing the Trouble Diagnosis
- Trouble Diagnosis Using the Scan Tool
- Function Inspection List and Diagnostic System Checks
- HSA Indicator Light Circuit Checks
- Door Switch, Parking Brake Switch, Stop Light Switch, Neutral Switch Checks
- HSA Reset Switch, HSA OFF Switch Checks
- HSA Adjustment
- Diagnostic Trouble Code List and all DTCs
- Failure Symptom List
- HSA Control Unit, HSA Valve, Clutch Stroke Sensor, Clutch Oil Pressure Switch
- Door Switch, Parking Brake Switch, Stop Light Switch
What This Manual Delivers
This 2008-2009 Isuzu N Series Brake Workshop Manual gives technicians and fleet maintainers the complete brake system service and repair information for the N Series commercial truck range. Every procedure is documented with step-by-step instructions, component illustrations, exploded views, and tightening torque values. The manual covers both vacuum brake booster and hydraulic brake booster configurations, multiple disc and drum brake sizes, and the full ABS/ASR/EBD diagnostic tree with DTC charts.
The brake section opens with a complete hydraulic brake system overview including circuit diagrams for vacuum brake booster types with ABS, with LSPV, without ABS and LSPV, and hydraulic brake booster types with and without LSPV. Each brake assembly β from the master cylinder and vacuum brake booster to front disc brakes, rear disc brakes, front drum brakes, and four different rear drum brake sizes β receives full removal, disassembly, inspection, reassembly, and installation coverage with torque specifications.
For vehicles equipped with anti-lock brakes, the ABS/ASR/EBD section provides comprehensive diagnostic procedures including flash code reading, scan tool usage, DTC charts covering every fault code from C0213 through C0264, and detailed circuit testing for wheel speed sensors, the electronic hydraulic control unit, master cylinder pressure sensor, and G sensor. The parking brake section covers both the 178/190mm and 203mm internal-expanding drum brake types mounted on the transmission rear, with adjustment procedures and return spring specifications.
The Hill Start Aid section is particularly thorough, documenting the HSA system that retains braking force when the driver releases the brake pedal on an incline. It includes the full diagnostic trouble code list (DTC 03 through 91), scan tool data tables with typical values, circuit checks for every input component including door switches, parking brake switch, stop light switch, neutral switch, clutch stroke sensor, and clutch oil pressure switch, plus the HSA adjustment procedure for both initial adjustment and brake release fine-tuning.
Covered Models
This manual applies to the following 2008/2009 Isuzu N Series models: NHR, NLR, NLS, NMR, NNR, NPR, NPS, and NQR. The ABS/ASR section references both the 4HK1 and 4JJ1 engine control module communications, and the brake specifications cover multiple front and rear brake configurations including disc and drum variants across these models.
Why This Manual Matters for Your Workshop
Brake system repair on commercial vehicles demands exact procedures and correct torque values β mistakes affect safety directly. This 2008-2009 Isuzu N Series Brake Workshop Manual provides the precise specifications, component identification, and diagnostic flow charts needed to service these systems correctly. Whether you are replacing a master cylinder, rebuilding a rear drum brake, diagnosing an ABS warning light, or adjusting a Hill Start Aid release point, the procedures in this manual are the ones used for these vehicles.
The ABS/ASR section alone includes 14 diagnostic trouble codes with full circuit/system testing charts, making it possible to pinpoint faults in the wheel speed sensor circuits, solenoid valves, motor circuits, CAN communication, and sensor signal circuits rather than replacing parts by guesswork. The hydraulic brake booster section covers the unique accumulator and charge valve system used on certain N Series configurations, with explicit safety precautions for handling high-pressure hydraulic oil.
With 412 pages of brake-specific service information, this PDF is an essential reference for any technician or fleet workshop maintaining Isuzu N Series trucks from the 2008 and 2009 model years.
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This Isuzu N Series brake workshop manual is delivered as an instant PDF download after payment. No shipping, no waiting. The file works on any device β computer, tablet, or smartphone β and pages can be printed for use in the workshop. Keep it on your service laptop or print the sections you need for the job at hand.
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