Description
Factory Isuzu D-Max Workshop Manual (2019–2023)
This two-PDF factory bundle delivers dealer-grade repair information for the third-generation Isuzu D-Max RG platform — covering every body style, trim level, and drivetrain configuration sold from 2019 through 2023. The package pairs the full vehicle workshop archive with a dedicated 4JJ3-TCX engine supplement that goes deep on timing chain, injector, and DPD aftertreatment procedures.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | None — diesel-only lineup |
| Diesel | 1.9L RZ4E-TC turbo diesel; 3.0L 4JJ1-TC turbo diesel; 3.0L 4JJ3-TCX turbo diesel (with DPD aftertreatment) |
| Transmissions | 6-speed MVL manual with clutch system; 6-speed Aisin AWR6B45 automatic; 6-speed TB-50LS automatic |
| Drive | 4×2 (RWD) and 4×4 with transfer case; LHD and RHD |
| Model Years | 2019, 2020, 2021, 2022, 2023 |
| Badge Twins | Isuzu MU-X (shares RG platform; drivetrain procedures directly applicable) |
Common D-Max Repairs Covered
| System | Procedures |
|---|---|
| DPD / DPF System (4JJ3-TCX) | Exhaust differential pressure sensor replacement, exhaust gas temperature sensor harness routing, DPD warning light diagnosis, failed regeneration cycle troubleshooting |
| EGR Cooler Bypass Solenoid | Removal, inspection, and installation of EGR cooler bypass control solenoid valve — addresses power loss, rough idle, and high fuel consumption caused by carbon buildup |
| Valve Clearance Adjustment (4JJ1 / 4JJ3) | Feeler gauge procedure at each crankshaft position per firing order sequence; rocker arm locknut torque; eliminates ticking noise at higher mileage |
| Timing Chain Service (4JJ3) | Full chain removal and installation with alignment mark positions, idle gear disassembly/reassembly, TDC alignment, and torque specifications for chain stretch or wear |
Format & Delivery
PDF (2-manual bundle). Instant download; lifetime re-downloads.
Frequently Asked Questions
Does the 2019–2023 Isuzu D-Max use a timing belt or timing chain?
Both the 3.0L 4JJ1-TC and 4JJ3-TCX engines use a timing chain — there is no scheduled belt replacement interval. The dedicated 4JJ3 engine supplement in this bundle documents the complete chain inspection, removal, alignment mark positioning, and installation procedure with all torque values, so you can address chain stretch or tensioner wear correctly.
Does this manual cover the Isuzu MU-X as well?
The MU-X shares the RG platform with the D-Max, so engine, transmission, driveline, suspension, and brake procedures documented here apply directly to equivalent MU-X variants carrying the same powertrains. Body-specific and interior sections are D-Max cab-oriented, so a dedicated MU-X manual is recommended for full SUV body coverage.
Is the AWR6B45 automatic transmission fully covered?
Yes. The main vehicle manual includes a dedicated section for the Aisin AWR6B45 6-speed automatic covering fluid level checks, drain and fill specifications, torque converter operation, TCM diagnostics, and solenoid testing. The TB-50LS automatic is covered in its own section with the same depth. Common symptoms like harsh shifting and delayed engagement are addressed through the electrical control and diagnostic content.
What format is the manual?
The bundle is delivered as two fully searchable PDF files — the main D-Max vehicle workshop archive and the 4JJ3 engine supplement. Both are available for instant download immediately after purchase and can be opened on Windows, Mac, Linux, iOS, or Android using any standard PDF reader. No special software is required, and pages can be printed at full resolution for bench use.
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