Blog - Auto Machine Diagnosis EPC Download Installation Service

Posted on July 10, 2025July 2, 2025 by autoepccatalog

Scania truck CUV 11 Front Foglamp Trouble Solution

This instruction show you guide on how to repair Scania truck CUV 11 front foglamp trouble.

Front foglamp

Error identification

The current consumption on the control unit output has exceeded 12A.

Preparations:

Scania SDP3 2.65.2 Truck Diagnostic Software

Scania Multi EPC 2025

Scania VCI3 High quality

Cause

Short circuit in the relay for current consuming equipment R19 or in the cable harness.

Notes

Front foglamp is inoperative. Every time the function is activated, the current consumption on the control unit output is checked. If the current consumption is too high, the output is switched off and a fault code is registered.

Action

Check the bulbs. Also, check the number of connected lamps in circuit. Check whether there is a short circuit to ground.

Posted on July 5, 2025June 25, 2025 by autoepccatalog

How to Replace System Main Relay Junction Block for HINO Truck

This instruction show you guide on how to remove and install system main relay junction block for HINO truck with J05E engine.

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Nexiq USB Link 3

HINO DX3 2024

HINO Truck Service Manual 2022 Workshop Repair Book

REMOVING THE SYSTEM MAIN RELAY JUNCTION BLOCK

1 REMOVING THE PCU.

Reference: HYBRID, HYBRID SYSTEM, PCU, REPLACEMENT, REMOVING THE PCU

2 REMOVING THE HV BATTERY COOLING FAN.

Reference: HYBRID, HYBRID SYSTEM, HV BATTERY COOLING FAN, REPLACEMENT, REMOVING THE HV BATTERY COOLING FAN

3 REMOVING THE HV BATTERY ECU.

Reference: HYBRID, HYBRID SYSTEM, HV BATTERY ECU,REPLACEMENT, REMOVING THE HV BATTERY ECU

4 REMOVING THE SYSTEM MAIN RELAY JUNCTION BLOCK.

(1) Cut the harness (4 locations).

(2) Remove the bolts and nuts (2 pcs.), and remove the system main relay junction block.

MOUNTING THE SYSTEM MAIN RELAY JUNCTION BLOCK

1 MOUNTING THE SYSTEM MAIN RELAY JUNCTION BLOCK.

(1) Mount the system main relay junction block with bolts and nuts (2 pcs.).

Tightening Torque: 5.3-9.8 N·m {54-99 kgf·cm, 3.9-7.2 lbf·ft}

(2) Connect the harnesses (4 locations).

2 MOUNTING THE HV BATTERY ECU.

Reference: HYBRID, HYBRID SYSTEM, HV BATTERY ECU, REPLACEMENT, MOUNTING THE HV BATTERY ECU

3 MOUNTING THE HV BATTERY COOLING FAN.

Reference: HYBRID, HYBRID SYSTEM, HV BATTERY COOLING FAN, REPLACEMENT, MOUNTING THE HV BATTERY COOLING FAN

4 MOUNTING THE PCU.

Reference: HYBRID, HYBRID SYSTEM, PCU, REPLACEMENT,MOUNTING THE PCU

Posted on June 30, 2025June 25, 2025 by autoepccatalog

Doosan Stage V P1563 Battery Voltage High Fault Solution

This instruction show you guide on how to repair Doosan Stage V P1563 trouble code battery voltage high fault error.

Preparations:

2025 Doosan Data Monitoring System DMS-5

2024 Doosan Diagnostic Software Full Package

Doosan uVIM Diagnostic Tool

“E” SPN-FMI E000444-00

Reason:

1 Electrical problem (Alternator, Alternator wiring harness)

2 Electrical problem (Battery, Wiring harness, Battery terminal, Connector)

3 Electrical problem (External battery charger)

Effect:CE lamp ON

2 Condition for Running Diagnostic

Key on or engine running or Key off(ECU on)

3 Condition for Setting the Fault Code

Battery voltage is more than maximum warning operation voltage (15V)

4 Condition for Clearing the Fault Code

Battery voltage is in warning operation range (10V~15V)

5 Check List

Posted on June 25, 2025June 23, 2025 by autoepccatalog

How to Use JPRO Diagnostic for Detroit Parked SCR Efficiency Test

The Parked SCR Efficiency Test is supported on:

✓ Detroit Diesel EPA 10 to EPA 13 all DD13, DD15, and DD16 engines ✓ Detroit Diesel GHG17 and newer with Engine Software Version: o App_040B o App_040D o App_0411 o App_2108 o App_2104 o App_2109

and ACM Software Version:

o acm_0x0232 o acm_0x0236 o acm_0x023E o acm_0x0250 o acm_0x024E The Parked SCR Efficiency Test validates the SCR system integrity from engine warm up through NOx efficiency. It may be used for diagnosing SCR catalyst efficiency or DEF concentration concerns.

Related Contents:

JPRO Noregon Commercial Fleet Diagnostics 2024

Noregon JPRO DLA+ 2.0 Adapter

Steps:

1 Select the Parked SCR Efficiency Test and press Enter or select the Start button.

2 If not previously shown, the Aftertreatment Instructions are automatically displayed to provide aid in diagnosing issues with aftertreatment systems. When read, select the Close button on the window.

3 The Parked SCR Efficiency Test dialog will be displayed.

4 Select the More Information button to view additional details concerning this test.

5 Select the Data tab to view data related to the aftertreatment system as well as a graph of temperature values.

6 Select the Faults tab to view all active fault conditions for the engine and aftertreatment system.

7 To begin the test, press the Start button. The lamp to the left of the Start button will change from “Not Running” to “Running” and highlight as well. The button will change to Stop. NOTE: The transmission must be in park or neutral and the parking brake must be applied prior to starting the test.

NOTE: The engine must be at operating temperature for accurate results.

8 As the test runs, the status area will show what is occurring and the current state. Once the test completes, the status area will display the test results.

9 To end test at any time, press the Stop button. 10. To leave this dialog, select the Exit button.

Posted on June 12, 2025June 23, 2025 by autoepccatalog

JCB 140 205 Excavator C0393-13 Swing Lock Solenoid Open Circuit Solution

This instruction show you guide on how to solve JCB 140 205 excavator C0393-13 swing lock solenoid open circuit error.

Preparations:
2025 JCB ServiceMaster 4 v25.1.0

2017 JCB Parts Plus+ and Repair Service Manual

JCB Diagnostic Kit

Possible Cause:

1 Swing solenoid not connected to machine wire harness.

2 Faulty Solenoid.

3 Terminal back out on the MECU wire harness connector.

Diagnosis:

1 Check the wire harness connection on swing solenoid. Refer below photograph.

2 Check the solenoid coil circuit resistance. The resistance of solenoid coil shall be 37Ω.

3 Check the circuit no 8049 on cavity no 56 & circuit no 4049 on cavity no 25 in the MECU wire harness connector in CAB base harness for terminal back out. Refer the below photograph.

Posted on June 7, 2025May 21, 2025 by autoepccatalog

Scania Truck Supply Pressure Control Unit Internal Fault in the Control Unit

Here is the instructino show you guide on how to solve Scania Truck supply press control unit internal fault in the control unit.

Preparations:

Scania SDP3 2.65.2 Truck Diagnostic Software

Scania Multi EPC 2025.01

Scania VCI3 High quality

Error identification

Regulation of internal supply voltage to the solenoid valves does not work as intended. This has caused supply voltage to be higher than permitted.

Cause

Internal fault in the control unit.

Notes

A yellow warning indication is displayed.

Action

Clear the fault code.

Turn off the power with the starter key.

Wait for 60 seconds.

Switch on the voltage with the starter key.

If the fault code it still active, renew the control unit.

Posted on June 2, 2025May 21, 2025 by autoepccatalog

How to Solve Deutz EMR3 SPN1323 Cylinder 1 Misfire

This instruction show you guide on how to solve Deutz engine EMR3 SPN1323 error code 38 misfire at cylinder 1.

Error description MISFIRE CYL. 1

Misfire at cylinder 1: the number of the misfire detected by ECU is out of the allowed limit value

Related Contents:

Deutz Serdia 4.0

Deutz DECOM

Error codes

DEUTZ-Errorcode: 38

BlinkCode (short-long-short): 2 – 4 – 1

SPN: 1323

Possible FMI:

Defective component

Errormode not identifiable

Error detection

Error lamp shows permanent light. Entry in error memory.

Possible reason for error

Misfire detected (cylinder 1), magnet valve or injection pump defective, fuel system defective, motor engineering damaged

Take actions for error repair

Check magnetic valve or injection pump and if necessary replace them, check fuel system and if necessary repair it, check motor engineering and if necessary repair it other error properties

System reaction:

Behaviour error lamp: permanent light

Selfhealing: no

Signal Priority: 0

Measurement @ errortime: act

Posted on May 27, 2025May 9, 2025 by autoepccatalog

Perkins Phaser/1000 Series Engine Measurement of Inlet Valve

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Perkins SPI2 2018A Service and Parts Catalogs

Currently, the maximum clearance between the valve stem and the guide is 0,13 mm (0.005 in) for inlet valves and 0,15 mm (0.006 in) for exhaust valves. As these clearances are difficult to check in service, it is recommended that the procedure given below is used.

Put a new valve in the valve guide. With a dial test indicator on the face of the cylinder head, lift the valve 15,0 mm (0.6 in).

Move the valve radially across the axis of the cylinder head away from the gauge. With the valve held in this position, zero the gauge against the valve head (A). Move the valve radially across the axis of the cylinder head towards the gauge. Make a note of the reading on the gauge. If the reading is equal to or greater than the data given below, a new valve guide must be fitted.

Maximum permissible clearance with a valve lift of 15,0 mm (0.6 in):

Inlet guide: 0,24 mm (0.009 in)

Exhaust guide: 0,32 mm (0.013)

Posted on May 21, 2025May 21, 2025 by autoepccatalog

How to Change System Troubleshooting Settings for CAT ET 2025A

CAT ET 2025A Diagnostic software System Troubleshooting Settings function allows the troubleshooting parameters “Value” and “Mode” to be viewed and changed. This function puts parameters in and out of override mode.

The parameters that are changed to override mode stay in this mode until they are disabled in the System Troubleshooting Settings screen or the ECM is turned off. Turning off the ECM resets the ECM parameters back to their normal settings.

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CAT ET 2025A

Cat comm 3 adapter

Accessing

To run the System Troubleshooting Settings function, select “Diagnostic Tests” from the Diagnostics menu on CAT ET 2025A, and then select “System Troubleshooting Settings” from the submenu. The System Troubleshooting Settings screen is displayed.

Screen Layout

The System Troubleshooting Settings screen has the following areas:

Display Area

The System Troubleshooting Settings display area has four columns:

Description – Provides the name of the parameter

Value – Displays the status of the current parameter

Unit- Displays the unit of measure for the value

Mode – Displays the mode of the parameter: “Normal” or “Override”

Buttons

The buttons available in the System Troubleshooting Settings screen are:

Change

Disable Override – Click this button to take the selected parameter out of override mode.