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Fault code 16366: Diagnosis/troubleshooting

NOTE: Before replacing the control unit, the ground connections, power supply and plug connections on the control unit must be checked. After the test drive, read out the fault memory with the Porsche System Tester II No. 9588 again. Additional causes of faults that could damage the transfer box control unit should be detected and remedied.
DIAGNOSIS TROUBLESHOOTING PROCEDURE

Work instruction Display OK If not OK
1 Delete the fault memory for the transfer box control unit and restart the internal function test (ignition ON/test is performed automatically) โ†’ End If fault is repeated, then:
Go to Step 2
2 Replace transfer box control unit โ†’ End