How to Archives - Auto Machine Diagnosis EPC Download Installation Service

Posted on August 22, 2025August 12, 2025 by autoepccatalog

Caterpillar C9 Engine Fault Code 25 PID 102-1 Low Boost Pressure Solution

This instruction show you guide on how to solve Caterpillar C9 engine fault code 25 PID 102-1 low boost pressure.

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CAT ET 2025A

CAT Comm 3

Caterpillar 18 digits factory password calculator

The Engine Control Module (ECM) detects the following conditions:

-Actual boost is less than desired boost by more than 30 kPa (4.4 psi) for more than eight seconds.

The current for the turbocharger solenoid is greater than 80% of the maximum value.
Desired boost is not ZERO.
The ECM has been powered for at least two seconds.

This engine uilizes a waste gate control valve that is electronically controlled in order to precisely regulate the boost pressure.The Engine Control Module (ECM) monitors the signal from the boost pressure sensor in order to determine the boost pressure in the intake manifold.The ECM uses this in formation and other information that is related to the current power demand and the current engine operating conditions in order to determine the optimum position of the waste gate valve the turbocharger.

The turbocharger’s wastegate valve regulates the amount of exhaust gas that is a owed to bypass the turbine wheel of the turbocharger.This allows the ECM to control the speed of the turbocharger and the boost pressure.

Probable Causes:

1) ECM Connection

2) Waste gate control solenoid (Can be replaced instead of the entire valve)

3)Harness between the ECM and the wastegate control solenoid

4) ECM Failure

5)Air inlet system restrictions or exhaust system restrictions

6) Drain orifice plugged

Posted on August 17, 2025August 12, 2025 by autoepccatalog

Detroit DD13 EPA10 SPN 51 FMI 2 Intake Throttle Position Deviation Error

This instruction show you guide on how to solve Detroit DD13 engine EPA10 SPN 51 FMI 2 MCM intake throttle position deviation error.

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DDDL 8.21 2025

Nexiq USB Link 3 Adapter

This code sets when the Intake Throttle Valve position has A15%deviation from the position commanded by the Motor Control Module (MCM) when the engine coolant temperature is above 60°C (140°F)

MONITORED PARAMETER:

Intake Throttle Valve (ITV)

TYPICAL ENABLING CONDITIONS:

Coolant temperature isgreater than 60C (140°F).

MONITOR SEQUENCE:

None

EXECUTION FREQUENCY:

Continuous when enabling conditions met.

TYPICAL DURATION:

Five seconds

DASH LAMPS:

1 MIL

2 CEL

ENGINE REACTION:

10% Derate

VERIFICATION:

Engine rpm = 600 rpm or higher.

POSSIBLE CAUSES:

1 Faulty ITV motor.

2 Faulty ITV position sensor.

3 Sticking ITV.

PROBABLE CAUSES:

1 Air throttle valve harness.

2 ITV harness connector.

3 Intake throttle valve failure.

4 Cold temperatures may falsely cause this code to appear.

5 Intake throttle valve sensor.

Posted on August 12, 2025August 8, 2025 by autoepccatalog

How to Remove and Install HV-ECU for HINO J05E Engine

How to remove and install HV-ECU for HINO J05 Engine truck.

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Nexiq USB Link 3

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HINO Truck Service Manual 2022 Workshop Repair Book

1 REMOVING THE PCU

Reference: HYBRID, HYBRID SYSTEM, PCU, REPLACEMENT,REMOVING THE PCU (Page 3-18)

2 REMOVING THE UNDER COVER

Reference: HYBRID, HYBRID SYSTEM, HV BATTERY,

REPLACEMENT, REMOVING THE HV BATTERY ASSEMBLY

3 DISCONNECTING THE BOTTOM OF PCU

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

4 REMOVING THE ECU BOX COVER

(1) Unfasten the bolts (15 pcs.) to remove the ECU box cover and gasket.

! CAUTION

The old gasket is not reusable.

How to Remove and Install HV-ECU for HINO J05E Engine (1)

5 REMOVING THE HV-ECU

(1) Disconnect the connectors (3 locations).

How to Remove and Install HV-ECU for HINO J05E Engine (2)

(2) Disconnect the harness clamps (6 locations) and relay block.

(3) Unfasten the bolts (4 pcs.) and remove the HV-ECU.

How to Remove and Install HV-ECU for HINO J05E Engine (3)

MOUNTING THE HV-ECU

1 MOUNTING THE HV-ECU

(1) Mount the HV-ECU with the bolts (4 pcs.).

Tightening Torque:

9 N·m {92 kgf·cm, 6.6 lbf·ft}

Connect the harness clamps (6 locations) and relay block.

How to Remove and Install HV-ECU for HINO J05E Engine (4)

Connect the connectors (3 locations).

How to Remove and Install HV-ECU for HINO J05E Engine (5)

2 MOUNTING THE ECU BOX COVER

(1) Mount the new gasket and ECU box cover with the bolts (15pcs.).

Tightening Torque:

9 N·m {92 kgf·cm, 6.6 lbf·ft}

! CAUTION

Always use a new gasket.

3 MOUNTING THE BOTTOM OF PCU

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

4 MOUNTING THE UNDER COVER

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

5 MOUNTING THE PCU

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

Posted on August 7, 2025 by autoepccatalog

How to Solve Deutz EMR3 55/110 Coolant Temperature Sensor Error

Here is the instruction show you guide on how to solve Deutz EMR3 engine 55/110 coolant temperature sensor error.

Error description ENG COOLANT TEMP

Coolant temperature sensor: the voltage of the sensor measured by ECU is out of the target range; the coolant temperature calculated by ECU is implausible compared with the oil temperature or the received value via CAN is defective

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Error codes

DEUTZ-Errorcode: 55

BlinkCode (short-long-short): 2 – 2 – 5

SPN: 110

Possible FMI:

3: Voltage to high or short circuit to +Ubatt

4: Voltage to low or short circuit to -Ubatt

2: data stream is defective

Error Detection

Error lamp shows permanent light. Entry in error memory.

Possible reason for error

Cable break or short circuit, lamp defective, connection cable damaged

Take actions for error repair

Check cabling, sensor defect, check sensor and if necessary replace it, check connection cable and if necessary repair or replace it other error properties

System reaction: Warning, substitute value

Behaviour error lamp: permanent light

Selfhealing: yes

Signal Priority: 4

Measurement @ errortime: default value

Posted on July 15, 2025July 3, 2025 by autoepccatalog

Caterpillar C9 Engine Excessive Injection Actuation Pressure Error

This instruction show you guide on how to solve Caterpillar C9 engine excessive injection actuation pressure error.

Caterpillar C9 Engine

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The Engine Control Module (ECM) detected the following conditions:

-The injection actuation pressure is greater than 30 MPa (4351 psi) for more than six seconds.

-Engine speed is greater than O MPH.

-Engine coolant temperature is more than 18 °C (64 °F).

The ECM has been powered for at least three seconds.

-Cold mode is not active.

The injection actuation pressure sensor measures the pressure of the oil in the high pressure oil manifold.The high pressure oil in the manifold is used to actuate the injectors and high pressure oil is used to control the fuel injection pressure.Fuel injection pressure is based on inputs from the sensors.The inputs are used by the engine control module ECM for calculating the fuel injection pressure.The ECM uses the reading from the injection actuation pressure sensor in order to control the operation of the injection actuation pressure control valve.

Probable Causes:

1) Oil leaks in the HEUI rail

2) Low engine oil level

3) Injection actuation pressure sensor failure

4) Wiring harness between ECM and the fuel injectors

5) ECM Failure

6) Low fuel pressure while cranking (below 25 PSI)

7) Injector failures or Injector o-ring failures

8) Unit injector hydraulic pump

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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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.

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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.