Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMITSUBISHI1990VAN BASE, VAN PASSENGERREPAIR AND DIAGNOSISTRANSMISSIONAUTOMATIC TRANSDIAGNOSIS & OVERHAUL - AW70, AW71, AW372 SERIES, KM148 & R4AW2
1990 Mitsubishi Van Base, Van Passenger
Diagnosis & Overhaul - Aw70, Aw71, Aw372 Series, Km148 & R4AW2
1990 Mitsubishi Van Base, Van PassengerSECTION Diagnosis & Overhaul - Aw70, Aw71, Aw372 Series, Km148 & R4AW2
- Application
- Identification
- Description
- Lubrication & Adjustments
- On-Vehicle Service
- Trouble Shooting
- Notes
- Symptom Diagnosis
- Downshift Out Of Time
- No Downshift
- 2-1 Downshift Too Early
- 2-1 Downshift Too Late
- Harsh Shift During Deceleration
- Harsh Shift & Noise During Acceleration Or Deceleration
- No 1-2 Upshift
- No 2-3 Upshift
- No 3-4 Upshift
- Shift Point Improper
- No Braking In "2"
- No Braking In "L"
- Vehicle Does Not Hold In "P" Position
- Vehicle Does Not Move Forward
- Vehicle Does Not Move In Reverse
- Clutch & Brake Band Applications
- Performance Tests
- Component Tests
- Removal & Installation
- Transmission Disassembly
- Component Disassembly & Reassembly
- Transmission Reassembly
- Torque Specifications
- Wiring Diagrams
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.