Checking Parameters, Start

Checking the parameters, start

Checking the parameters

Hint: If the diagnostic trouble code (DTC) for CAN communication in the high speed network is stored in the central electronic module (CEM), these diagnostic trouble codes (DTCs) must be fault traced before carrying out the following fault-tracing.

- Ignition on
- Read off parameters.
Check that:
- The battery voltage is between 11-14 V. The signal is measured from a directly connected cable from the system relay
- The immobilizer allows start up. The status indicates whether the immobilizer has approved the keys
- The clutch pedal position is "Active". The signal from the central electronic module (CEM) is measured via the controller area network (CAN). The parameter conditions apply only to certain markets.

Hint: Check that the clutch pedal sensor is correctly installed/adjusted if the status is incorrect.

Note! On cars with automatic transmissions, the parameter for the clutch pedal position sensor will display "Active" (the clutch pedal position sensor allows start up).

- The status for "Ignition switch (via CAN)" is correct in position 2 (ignition on) and position 3 (start). The signal from the central electronic module (CEM) is measured via CAN communication
- The status for "Ignition switch" is correct in position 2 (ignition on) and position 3 (start). The signal is measured from a directly connected cable from the central electronic module (CEM). When the ignition switch is in position 3 (start) and the status read off is "position 3", the starter motor relay is activated. When the starter motor relay is activated, the starter motor is powered by the relay
- The status for "Position gear selector (via CAN)" is "P/N connected" when the gear selector is in this position. The signal from the transmission control module (TCM) is measured via CAN communication
- The status for "Position gear selector" is "P/N connected" when the gear selector is in this position. The signal is measured from a directly connected cable from the transmission control module (TCM).
If the status (via CAN) from other control modules is incorrect, these control modules must be fault traced first. Read off the diagnostic trouble codes (DTCs) in the affected control module.
If the status from directly connected cables to the engine control module (ECM) is incorrect, these cables must be fault traced.
Remedy as necessary.
If VIDA is not communicating with the engine control module (ECM), fault-trace the CAN network and check the power and ground terminals for the engine control module (ECM).

Other information
- Connecting the breakout box, B5254T7 Connecting the Breakout Box, Engine Control Module (ECM)
- Signal specification, B5254T7 Signal Specification
- Checking the voltage / ground terminal, B5254T7 Checking Supply Voltage/Ground Terminal, Engine Control Module (ECM)
- Checking wiring and terminals Checking Wiring and Terminals





Continue - DONE

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