Truck scania R 420 Diagnostics

Vehicle type


Manual Process
Measure Values
Components Actuation
ECU Data
System Technical Data
Wiring diagram
Vehicle Technical Data
Vehicle Maintenance
Manual diagnosis process of the system through display codes, blinking codes…
Allows to read the ECU failure memory by providing the user information about the error codes detected in it. This function allows the user to carry out the deleting of the errors memory; logically if the error is present, it will be detected again by the ECU and it will be displayed in the following diagnosis.
Displays on the screen the values of the different sensors connected to the ECU. It depends on each system.
They are the direct tests that can be done with the system components. For example, actuate an ABS modulator, activate the suspension solenoid valves in order to raise or low the vehicle chassis,... It is the active diagnosis, which, for example for the engine, allows to carry out tests calibrating its state, like the cylinders balance, cylinders cutout or compression. Depends on each system.
They are the technical data of the ECU, serial number, software version, manufacturer's reference, etc. It depends on each system.
Some ECU can operate with different configurations. With this option you can copy configurations and parameters to the control unit, so control units can be programmed in its first installation. For certain systems even the modification of some parameters not affecting the vehicles security is allowed.
Some systems ask to calibrate some components for its correct operation. The best example are the electronic suspensions, in which there must be stored the reference values so the ECU can make function correctly.
This point refers to the reset of the control units maintenance counters. If the maintenance operations are completed but the maintenance alarm is not cancelled, the warning message referring to maintenance will keep on. It has nothing to do with the clearing of the error codes from the memory, which is part of the diagnosis.
Technical information of the system indicating the checking values, descriptions, graphics, charts…
Detailed diagram of the system containing added information on configuration, components, locations and notes which make the diagnosis easier.
Technical information of vehicles including all the motorization technical data, tightening torques, capacities, graphics and other checking values…
Section in which the maintenance intervals are displayed, indicating the operations to be performed on the vehicle, and through which the reports that make the customers management easier for the workshop can be obtained.

scania R 420

Heater AHS ATA, Auxiliary heater system, air to air Diagnosis
Heater AHS WTA, Air-water heater auxiliary system Diagnosis
Gearbox GMS, Gearbox management system Diagnosis
Climate HVAC CCS, Climate Control System Diagnosis
Central computer COO, Coordinator Diagnosis
Wheel pressure control TPM, Tyre Pressure Monitoring System Diagnosis
Brakes BMS ABS, Brake management system Diagnosis
Brakes BMS EBS, Brake management system Diagnosis
Compressed air processing APS, Compressed air supply Diagnosis
Lighting VIS, Visibility system Diagnosis
Lighting VIS2, Visibility system Diagnosis
Instrument cluster ICL, Instrument cluster Diagnosis
Maintenance Service, Maintenance system
Chassis module BWS, Bodywork management system Diagnosis
Electronic module AHS CTS, Timer System: heater control, radio... Diagnosis
Engine EMS HPI, High Pressure Injection Diagnosis
Engine EMS PDE, Engine Management System, Unit Injector System Diagnosis
Powertrain AWD, Four-wheel Drive Diagnosis
Data registration, telematics and FMS AUS3, Multimedia screen for the Telematics Infotainment System Diagnosis
Data registration, telematics and FMS FMS, Fleet Management System
Data registration, telematics and FMS ODR, Vehicle data register
Data registration, telematics and FMS RTC, Telematic module Diagnosis
Data registration, telematics and FMS RTI, Road Transport Information Diagnosis
Retarder RET, Retarder Diagnosis
Safety AICC, Distance sensor Diagnosis
Safety CSS, Crash Safety System Diagnosis
Safety DIS2, Distance sensor Diagnosis
Safety FLC, Forward-looking radar (anti-collision system) Diagnosis
Safety LDW, Lane Departure Warning Assistant Diagnosis
Audio system AUS, Audio system Diagnosis
Suspension SMS - ELC3, Suspension management system Diagnosis
Tachograph TCO, Tachograph Diagnosis
Antipollution EEC, SCR AdBlue, Exhaust gas treatment system Diagnosis
Antitheft LAS, Locking and alarm system Diagnosis

In Jaltest cookies are used to improve the user's online experience. If you continue navigating, you are accepting their use.

You can obtain further information in our Cookies Policy.

© Copyright All Rights Reserved