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Home >> Porsche >> 2003 >> 911 Carrera 4S, Standard >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Anti-Lock Brake System (Abs) - PSM 5.3/5/7 Diagnosis - 911 CARRERA (996) >> Fault code 4266 >> Diagnosis/troubleshooting PSM 5.7

Diagnosis/troubleshooting PSM 5.7

DIAGNOSIS/TROUBLESHOOTING PSM 5.7 (FAULT CODE 4266)

Work instruction Display OK If not OK
1 Check ground lead of the return pump
  • Switch off ignition
  • Pull off the PSM control module plug
  • Measure resistance between PSM control module plug pin 1 and ground
< 5
Step 2
Open circuit between PSM control module plug terminal 1 and ground point of PSM
Repair wiring harness
->End
2 Hydraulic unit defective ->End