MITSUBISHI Carisma 1995–2004

Variant identity

Model family

Carisma

Market/region

Japan

Period/status

1995–2004 • Status requires source verification

Platform/generation

DA

Powertrain/energy/driveline

C/D • Gasoline/diesel/GDI

Research focus: Volvo S40 ortak platform.

System map

• Evaluate fuel supply, rail target/actual pressure, injector balance, charge-air path and EGR/DPF/SCR in the same event capture.

Measurement and verification sequence

1. Capture low-pressure supply, rail target/actual, MAF/MAP, boost and exhaust temperature during crank and load.

Misdiagnosis traps

• A single DTC or user symptom is not a parts diagnosis; confirm with measurements and physical evidence.

Variant-specific system split

• Fuel path is separated into low-side supply → high-pressure pump → rail → injectors; air path into MAF/MAP → turbo control → intake manifold.
• On turbo-petrol architecture, load calculation, boost target/actual, lambda/fuel trim, ignition and knock control are compared in the same event window.

Freeze frame / live data

• Freeze frame: first/last fault time, RPM, load, vehicle speed, system voltage, core temperatures and companion DTCs.
• Live data: rail target/actual, low-side supply where supported, MAF/MAP, boost target/actual, EGR command/feedback.
• Aftertreatment: DPF differential pressure, soot/ash calculations, EGT chain, NOx in/out and SCR/DEF dosing enable.
• Live data: calculated load, MAP/boost target-actual, throttle angle, lambda/O2, STFT/LTFT, ignition advance and knock retard.

Root-cause split

• If rail pressure is low, separate low-side supply from high-pressure generation: when physical low-side supply is healthy but rail cannot follow target, regulation/pump/injector-leakage branches gain weight.
• For low boost, do not jump to turbo replacement: separate MAF/MAP plausibility, charge leak, VGT/wastegate command and exhaust backpressure at the same load point.
• On lean/misfire/boost complaints, align fuel trim, lambda, ignition retard and boost deviation on one time base to separate air leak, fuel-delivery and ignition causes.

What should be verified first?

Model name alone is insufficient. Do not generalize parts fitment, chronic issues or service procedures until production period, market, platform/generation, powertrain, transmission and controller identity are matched.

Model family dossier → · Engine Atlas → · Transmission Atlas → · Recall →