Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition
The engine control module (ECM) regulates the variable intake system VIS) via the electric throttle unit.
The engine control module (ECM) monitors the control signal for the throttle unit.
The diagnostic trouble code (DTC) is stored if the control module detects that:
- Signal missing.
- Control signal is too low.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Ignition switch position II.
- Battery voltage higher than 10.5 V.

Note! The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.

Substitute value
- None.

Possible source
- Contact resistance or oxidation in the connectors.
- Open circuit on signal cable.
- Open-circuit in the power supply cable.
- Open-circuit in the ground lead.
- The signal cable is short-circuited to ground.
- Short-circuit to ground in the power supply cable.
- Damaged throttle unit.

Fault symptom[s]
- Malfunction indicator light (MIL), on
- Poor performance