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Fault code 2060: Diagnosis/troubleshooting

NOTE: Visual inspection: In the next troubleshooting section, please check first that the affected 'pins' of the transfer box control unit plug connection and the 'pins' of the plug connections on the servo motor are neither damaged nor corroded. Remove any soiling or corrosion/oxidation. Replace damaged parts/wires.
NOTE: Control unit replacement: Before replacing the 'transfer box control unit', the ground connections, power supply and plug connections on the control unit must be checked as OK. Please observe the coding of the control module. After the test drive, read out the fault memory with the 9588 Porsche System Tester II 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 Check voltage supply for servo motor temperature sensor:
  • Ignition off
  • Pull sensor plug 'B' off servo motor
  • Ignition on
  • Measure voltage between 'pin B6 and ground' of sensor plug 'B' (wiring harness side).
 Approx. 5 V
Go to Step 2, measurement '2a'		 Measured voltage > 5 V
Go to Step 2, measurement '2b'
Measured voltage < 5 V
Go to Step 3
2 Check short circuit to B+: Measurement '2a':
  • Ignition off
  • Pull plug 'A' off servo motor
  • Measure resistance on servo motor between: 'pins B6 and pins A1, A2, A3, A4'.
 ∞ Ω
Measurement '2b'		 Short circuit between servo motor leads.
Go to Step 4
Measurement '2b':
  • Ignition off
  • Pull plug 'A' off servo motor
  • Pull plug off the transfer box control unit
  • Ignition on
  • Measure voltage between 'pin 29' of transfer box control unit plug and ground.
 < 0.3 V
Measurement '2c'		 Repair wiring harness to servo motor.
→ End
Measurement '2c':
  • Ignition off
  • Measure resistance between 'pin 29 and pins 15,16, 21, 36' of transfer box control unit plug.
 ∞ Ω
Go to Step 5		 Repair wiring harness to servo motor.
→ End
3 Check short circuit to ground: Measurement '3a':
  • Ignition off
  • Measure resistance between 'pin 29' of transfer box control unit plug and ground.
 ∞ Ω
Go to Step 5		 Measurement '3b'
Measurement '3b':
  • On servo motor, pull off sensor plug 'B' and servo motor plug 'A'
  • Measure resistance between 'pin 29' of transfer box control unit plug and ground.
 ∞ Ω
Go to Step 4		 Repair wiring harness to servo motor.
→ End
4 Replace transfer box servo motor → End
5 Replace transfer box control module See note on replacing control units!
→ End
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