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Troubleshooting-Data: FH 12 380 Model: Motor: D12A 380 / Lucas Unit Injector

This document provides troubleshooting values for various components of a FH 12 380 motor with a D12A 380 Lucas unit injector. It lists each component, the wires it connects between, its expected condition or operating state, the normal voltage range and any relevant picture number for measurements. Components include the battery, accelerator pedal sensor, air and coolant temperature sensors, ignition and fuel injectors. Normal voltage ranges are provided for each component under different operating conditions to aid in diagnosing issues.

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محمد يونس
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5K views2 pages

Troubleshooting-Data: FH 12 380 Model: Motor: D12A 380 / Lucas Unit Injector

This document provides troubleshooting values for various components of a FH 12 380 motor with a D12A 380 Lucas unit injector. It lists each component, the wires it connects between, its expected condition or operating state, the normal voltage range and any relevant picture number for measurements. Components include the battery, accelerator pedal sensor, air and coolant temperature sensors, ignition and fuel injectors. Normal voltage ranges are provided for each component under different operating conditions to aid in diagnosing issues.

Uploaded by

محمد يونس
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Troubleshooting-data

Model: FH 12 380 Motor: D12A 380 / Lucas Unit Injector

Component: From: To: Condition: Value Measured:


Pic.
. . . Connector seen from wire side .
. . . Measurements taken with .
connector installed
Battery (earth) B9 Batt. - Ignition on 0V
Battery (earth) B10 Batt. - Ignition on 0V
Accelerator pedal sensor B34 B22 Ignition on 4,9 - 5,1 V
Accelerator pedal sensor B22 B10 Ignition on 0V
Accelerator pedal sensor B21 B10 Ignition on, accelerator 0 - 0,5 V
released
Accelerator pedal sensor B35 B22 Ignition on, accelerator 0,4 - 0,65 V
released
Accelerator pedal sensor B21 B10 Ignition on, accelerator fully 22 - 28 V
depressed
Accelerator pedal sensor B35 B22 Ignition on, accelerator fully 3 - 4,2 V
depressed
Air temperature sensor A14 B10 Ignition on 0V
Air temperature sensor A15 A14 Ignition on, 20° C air 2,6 - 3,2 V
temperature
Air temperature sensor A15 A14 Ignition on, 40° C air 1,6 - 2,5 V
temperature
Clutch switch B19 B10 Ignition on 22 - 28 V
Clutch switch B19 B10 Ignition on, pedal activated 0 - 0,5 V
Coolant temperature sensor A13 B10 Ignition on 0V
Coolant temperature sensor A29 A13 Ignition on, 20° C 3V
Coolant temperature sensor A29 A13 Ignition on, 90° C 0,6 V
Ignition B6 B10 Ignition on 22 - 28 V
Ignition B6 B10 Ignition off 0V
Inductive camshaft position A31 A18 Starter rpm 1007
sensor
Inductive position sensor 1 A17 A30 Starter rpm 1012
MAP-sensor A27 B10 Ignition on 0V
MAP-sensor A25 A27 Ignition on 4,9 - 5,1 V
MAP-sensor A28 A27 Idle 0,9 - 1,2 V
MAP-sensor A28 A27 Ignition on, at sea level 0,8 - 1,2 V
MAP-sensor A28 A27 Ignition on, at 2500 - 3000 3,5 - 4,5 V
mbar
Relay B3 B10 Ignition on 0-1V
Relay B12 B10 Ignition on 22 - 28 V
Relay B11 B10 Ignition on 22 - 28 V
Relay B11 B10 Ignition off 0V
Relay B12 B10 Ignition off 0V
Relay B3 B10 Ignition off 22 - 28 V
Troubleshooting-data
Model: FH 12 380 Motor: D12A 380 / Lucas Unit Injector

Component: From: To: Condition: Value Measured:


Pic.
Stop light switch B18 B10 Ignition on, brake pedal 22 - 28 V
released
Stop light switch B18 B10 Ignition on, brake pedal 0 - 0,5 V
depressed
Unit Injector 1 A12 A4 Idle 1079
Unit Injector 2 A10 A4 Idle 1079
Unit Injector 3 A11 A4 Idle 1079
Unit Injector 4 A6 A3 Idle 1079
Unit Injector 5 A8 A3 Idle 1079
Unit Injector 6 A7 A3 Idle 1079

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