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DTC › COO9 COO9 / 0329

Outputs are disabled when they should be enabled.

â–¶ How to fix

Replace the COO8 ECU.

What you'll see

The outputs of the ECU will be disabled, leaving them in their ground state. • If the vehicle has Comfort shift the interlock valve will be locked and driver is unable to engage gear (VOR). • 61-relay will be inactive leaving high power consuming units with no power supply. • The secondary and third wake-up cannot be activated. This will affect the stay alive functionality of the system including switch modules. • Leaving the immobilizer without 12V supply will disable engine start (VOR).

System reaction

Amber COO Warning Lamp

Diagnostic depth

Detection

All controllable outputs are disabled and left in their ground state even though the output enable watchdog is being toggled. This applies for the digital outputs, PWM, wake-up, bi-directional and 12V supply.

Possible cause

Hardware malfunction

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