ERROR CODE RENAULT AND VOLVO TRUCK Mid 144 - Psid 10 - Fmi 3

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Fault code: MID 144 - PSID10 - FMI3 General information on the fault code: MID144

G001 - Vehicle management ECU

PSID10

Reversing lights output

FMI-3

Voltage abnormally high or short-circuit to a higher voltage

 Appliance(s) implicated: icated:  Appliance(s) implicated: icated: G001

Vehicle management ECU

S104

Reversing lights power supply relay Condition(s) and reason(s) for saving of fault code:

The voltage reading between the terminals  PB4 and  PB4 and PA12  PA12 of  of the component(s) G001 component(s)  G001 is  is abnormally high. Short-circuit between the battery voltage and the signal conductor(s) 1018. 1018 . The S104 The S104 equipment  equipment is defective. The component(s) S104 component(s)  S104 is(are)  is(are) assembled incorrectly. There is too high a contact resistance between the connector pins and/or oxidation. Perceptible symptoms or "customer complaint" due to fault:

D034

Vehicle electronic fault warning light

The warning light D049 light  D049 comes  comes on (D048: "STOP" warning light ; D049: "SERVICE" warning light). The following message is displayed: REVERSE LIGHT PROB Recording of the fault code by the ECU  G001.  G001. The function is inoperative. The warning light D049 light  D049 comes  comes on (D048: "STOP" warning light ; D049: "SERVICE" warning light). The following message is displayed: REVERSE LIGHT PROB Recording of the fault code by the ECU  G001.  G001. The function is inoperative.

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Troubleshooting and repair method:

In order not to replace any equipment unnecessarily, it is essential to follow the steps below before carrying out fault finding: If there is an active or inactive fault code, disconnect the connector or sensor. Check that the connectors are not oxidised and that the pins are not damaged. Note: Certain fault codes become inactive when the engine is stopped. Start the engine to check whether the fault code is still inactive when the engine is running.  After carrying out any work on the connector,refit the connector. Check whether the fault code becomes inactive. If the fault is still present, then carry out a check of the wires and sensors in accordance with the troubleshooting instructions.

The values given in the readings tables are correct operation values.

In order not to damage the equipment, the repair steps should be carried out in the correct order. General checks:

Check the general state of the function: ● ● ● ●

The wiring harnesses and the fluids routing pipes are sound. The connectors are neither oxidized nor physically damaged. The connecting arrangement is not damaged. The connectors are properly plugged into their equipment.

Check that the relay(s) S104 are properly connected and correctly supplied with current.

Diagnostics using the RENAULT TRUCKS test tool:

Using the RENAULT TRUCKS test tool, perform the operation  3649-08-03-11.

Advanced control and monitoring:

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Measurements and diagnostics on the module S104 : Illustration of the module  S104

Location

Key: in the illustration above, the appliance  S104 (A001) is identified by the mark "B".

The location (see illustration above) is given as an indication only, for more precision, refer to the appropriate vehicle repair manual. Preparation for tests and measurements:

Turn the ignition key to position "St" (Off).

 After switching of the ignition, wait for  10   seconds before plugging in or unplugging the connectors. Plug in the unit connector(s) XJC01-03 S104 (A001). Plug in the unit connector(s) G001. Start the engine. Engage reverse gear. Check that the component  S104 gives off a clicking noise. Measurements and diagnostics on the wiring harness and module(s) assembly G001":

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Measuring operation diagram

Working diagram

Illustration of module  G001

Location

Key: in the illustration above, the unit G001 is identified by item "A" and the unit S104 (A001) by item "B".

The location (see illustration above) is given as an indication only, for more precision, refer to the appropriate vehicle repair manual. Preparation for tests and measurements:

Turn the ignition key to position "St" (Off).

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 After switching of the ignition, wait for  10   seconds before plugging in or unplugging the connectors. Unplug the connector(s) from the appliance  S104 (A001). Plug in the unit connector(s) G001. Take a reading using a multi-meter. Tests and measurements:

Turn the ignition key to position "St" (Off).

Table of values to be measured:

MEASURING POINTS

VALUE TO BE MEASURED

Point N° 1

Point N° 2

MODULE ref.

TERMINAL N°

MODULE ref.

TERMINAL N°

VALUE

UNIT

G001

PB4

X004

X004

120 < R < 147

KΩ

G001

Vehicle management ECU

X004

Junction box earth terminal

Measurements and diagnostics on the module G001 :

Measuring operation diagram

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Working diagram

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Illustration of module  G001

Location

Key: in the illustration above, the unit G001 is identified by item "A" and the unit S104 (A001) by item "B".

The location (see illustration above) is given as an indication only, for more precision, refer to the appropriate vehicle repair manual. Preparation for tests and measurements:

Turn the ignition key to position "St" (Off).

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 After switching of the ignition, wait for  10   seconds before plugging in or unplugging the connectors. Unplug the connector(s)  XJC01-03 from the appliance S104 (A001). Plug in the unit connector(s) G001. Remove the wire(s) 1018 from the module connector(s) G001. Take a reading using a multi-meter. To facilitate making readings during the diagnostic check described below, RENAULT TRUCKS recommends:

Use tool 8533.

Use tool 3194.

Use tool 0061.

Use tool 8699.

The numbers in parentheses, shown in the values to be measured table, are those of the terminals or the tools mentioned above. Tests and measurements:

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Turn the ignition key to position "St" (Off).

Table of values to be measured:

MEASURING POINTS

VALUE TO BE MEASURED

Point N° 1

Point N° 2

MODULE ref.

TERMINAL N°

MODULE ref.

TERMINAL N°

VALUE

UNIT

G001

PB4 (4)

X004

X004

120 < R < 147

KΩ

G001

Vehicle management ECU

X004

Junction box earth terminal

Measurements and diagnostics on the wiring harness: Measurement(s) and diagnostics on the complete sub-system:i>

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Measuring operation diagram

Working diagram

Illustration of module  G001

Location

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Key: in the illustration above, the unit G001 is identified by item "A" and the unit S104 (A001) by item "B".

The location (see illustration above) is given as an indication only, for more precision, refer to the appropriate vehicle repair manual. Preparation for tests and measurements:

Turn the ignition key to position "St" (Off).

 After switching of the ignition, wait for  10   seconds before plugging in or unplugging the connectors. Insert the wire(s) 1018 of the connector(s) on the module  G001. Plug in the unit connector(s) G001. Plug in the unit connector(s) S104 (A001). Take a reading using a multi-meter. Start the engine. Move the gear selector to the 'neutral' position. Table for noting down values to be measured:

MEASURING POINT

MAGNITUDE TO BE MEASURED

Point N° 1

Point N° 2

 APPLIANCE ref. N°

TERMINAL N°

APPLIANCE ref. N°

TERMINAL N°

VALUE

UNIT

G001

PB4 (4)

G001

PA12 (12)

Ubat

V

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G001

Vehicle management ECU

If the value measured on the wire(s)  1018   does not match the value contained in the table, the wiring harness and/or the module(s)  G001 - S104 are faulty.

If the readings taken match the values in the readings table, go on to the next measurement. Start the engine. Engage reverse gear.

Start the engine. Engage reverse gear. Table for noting down values to be measured:

MEASURING POINT

MAGNITUDE TO BE MEASURED

Point N° 1

Point N° 2

 APPLIANCE ref. N°

TERMINAL N°

APPLIANCE ref. N°

TERMINAL N°

VALUE

UNIT

G001

PB4 (4)

G001

PA12 (12)

0

V

G001

Vehicle management ECU

If the value measured on the wire(s)  1018   does not match the value contained in the table, the wiring harness and/or the module(s)  G001 - S104 are faulty.

If the value measured on the conductor(s) 1018  matches the value in the table, the work for this fault code is now finished.

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