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Reading Control Module ID. ETM




Reading the control module ID







- Ignition on or start engine.

Read control module ID by clicking on the VCT 2000 symbol.

Identifying control module
The information that is Read identifies the control module hardware and software versions and the diagnostic status.

Communication fault







Communication has been interrupted for one of the following reasons:
- Ignition switched off.
- The switch is not in position for VCT 2000.
- VCT 2000 disconnected from Data Link Connector (DLC).
- VCT 2000 disconnected from VIDA cart/switch.
- Communication problems in VIDA application or in car.

Check therefore:
- that the ignition is on and switch is in correct position for VCT 2000.
- that battery voltage (system voltage) is normal (approximately 12 V). If necessary a battery charger can be connected during the test.

- that VCT 2000 is correctly connected to VIDA cart/switch and Data Link Connector (DLC).
- that VCT 2000 and wiring is fault-free.

Try to establish communication again or exit Reading Diagnostic Trouble Codes (DTCs). Depending on the communication fault, select one of the following alternatives.

- Try again.
- Fault-trace more comprehensively for the communication problem that has occurred.
- Exit fault-tracing/Read from next system.

Selecting the model
Select the car model to obtain the relevant fault tracing data.

Select one of the following model options
- V70 2000-, S60 and S80
- V70 -2000 and S70/C70
- S40/V40.

Checking communication faults, model V70 2000-, S60 and S80







Hint: For current information about the relevant circuit and signals, see the wiring diagram and signal specification for each system.

Data Link Connector (DLC)
- Check the power supply to the Data Link Connector (DLC) terminal #16. The voltage must be approximately battery voltage
- Check the cable for power ground and signal ground to the Data Link Connector (DLC) terminals # 4 and # 5.

Hint: When the VCT2000 is connected to the Data Link Connector (DLC) (is powered up) the indicator LED lights green. The indicator LED then flashes during communication with a control module. In the event of certain internal faults, the VCT2000 indicator LED will be red!

Communication cables
- Check the communication cable between the Data Link Connector (DLC) terminal # 7 and Central Electronic Module (CEM) terminal # D6 and with other connected control modules.
- Check for an open-circuit.
- Check for a short-circuit to ground.

CAUTION
If there is a fault in the communication cable, it will not be possible to establish communication on either the low or high speed network. The first time there is communication on this cable, the low and high speed network cables are connected between the Data Link Connector (DLC) and Central Electronic Module (CEM) to the other network in the car. This is controlled via a relay in the Central Electronic Module (CEM).

- For communication problems with control modules on the high speed network, check the communication cables between Data Link Connector (DLC) terminals # 6 and # 14 and Central Electronic Module (CEM) terminals # 137 and # 138.
- For communication problems with control modules on the low speed network, check the communication cables between Data Link Connector (DLC) terminals # 3 and # 11 and Central Electronic Module (CEM) terminals # 1319 and # 1320.
- Check these cables for an open-circuit, a short-circuit to ground and a short circuit to supply voltage.
- Also check the communication cables for the low and high speed networks between the Central Electronic Module (CEM) and the other connected Control modules.

Control modules
- Check that the control module power supply and ground terminal are fault-free.


CAUTION
If none of the above checks help, try Reading the Diagnostic Trouble Codes (DTCs) in the central electronic module. This is carried out via VIDA vehicle communication.


VCT2000 and wiring
- Try new wiring and/or a new VCT2000 if no faults are detected after the above fault-tracing.

Fault-tracing information
Falut-tracing communication problems is now finished.


Checking communication problems, V70 - 2000 and S70/C70 models







Hint: For current information about the relevant circuit and signals, see the wiring diagram and signal specification for each system.

Data Link Connector (DLC)
- Check the power supply to the Data Link Connector (DLC) terminal #16. The voltage must be approximately battery voltage
- Check the cable for power ground and signal ground to the Data Link Connector (DLC) terminals #4 and #5.

Hint: When the VCT2000 is connected to the Data Link Connector (DLC) (is powered up) the indicator LED lights green. The indicator LED then flashes during communication with a control module. In the event of certain internal faults, the VCT2000 indicator LED will be red!

Communication cables
- Check the communication cable between the Data Link Connector (DLC) terminal #7 and combined instrument panel terminal #B4 and with other connected control modules.
- Check for an open-circuit.
- Check for a short-circuit to ground.
- Check for a short-circuit to supply voltage.

CAUTION
If there is a fault in the communication cable, it will not be possible to establish communication on the high speed network. The first time there is communication on this cable, the high speed network cables are connected between the Data Link Connector (DLC) and the combined instrument panel to the high speed network in the car. This is controlled via a relay in the combined instrument panel.

- Check the communication cables between Data Link Connector (DLC) terminals #6 and #14 and combined instrument panel terminals #A 19 and #A20.
- Check the cables for an open-circuit, short-circuit to ground and a short-circuit to supply voltage
- Also check the communication cables for the high speed network between the combined instrument panel and the other connected control modules.

Communication cable for the cruise control as an independent system (not integrated)
- Check the communication cable between the Data Link Connector (DLC) terminal #13 and the cruise control control module. Check the cable for an open-circuit, short-circuit to ground and a short-circuit to supply voltag.

Communication cable for engine management system Fenix 5.2
- Check the communication cable between Data Link Connector (DLC) terminal #3 and the engine control module (ECM).
- Check the cable for an open-circuit, short-circuit to ground and a short-circuit to supply voltage.

Control modules
- Check that the control module power supply and ground terminal are fault-free.

CAUTION
If none of the above checks help, try Reading the Diagnostic Trouble Codes (DTCs) in the combined instrument panel. This is carried out via VIDA vehicle communication.

VCT2000 and wiring
- Try new wiring and/or a new VCT2000 if no faults are detected after the above fault-tracing.

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