45-33Fault code 4802 · Undervoltage

911 Turbo (996) PSM 05 45 45-33Fault code 4802 Undervoltage Diagnostic conditions • Internal control module function test • Voltage less than 9.8 V (voltage supply for control module, rate- of-turn sensor and steering angle sensor) • Vehicle speed is greater than 6 km/h Note! Once the vehicle voltage is within the permissible voltage range again, the PSM system is switched back on and the indicator lights go out. Possible cause of fault ♦Vehicle voltage was too low ♦Faulty connection to PSM control module Affected terminals Terminals 1, 5 and 23 Diagnosis/troubleshooting Work instruction Display OK If not OK 1 Check ground for open ♦Switch off ignition < 5 Ω Open circuit or high circuit ⇒ Step 2 contact resistance ♦Pull off the PSM control module between pins 1 and plug 5 of PSM control ♦Measure resistance between module plug and PSM control module plug pins 1 PSM ground point and 5 and ground → End 2 Erase fault memory and read out again after test drive → End 4503 Fault code 4802 45-33 page 1 Printed in Germany – 4, 2001 4802ps05