ABS/PSM - Check With Porsche System Tester 2
WM 45 ABS/PSM - check with Porsche System Tester 2The test applies for vehicles with Solo ABS, ABS/TC and PSM and is carried out on these systems using the Porsche System Tester 2!
The Porsche System Tester 2 is connected to the diagnostic socket in the front left footwell! Entry takes place through the ABS system (for vehicles with PSM automatic status change after PSM)!
Checking ABS and PSM
1. If work has been done on the hydraulic unit -D-, the speed sensors and the cable harness or if the hydraulic unit -D- is replaced, a system check (functional check) must be performed with the Porsche System Tester 2! This is the case, for example, after accident repairs! This prevents any confusion of electrical or hydraulic lines and ensures faultless operation of the system!
D Hydraulic unit
E Adapter
^ If certain brake lines are replaced, e.g. at the intermediate piece in the front-left wheel housing, -E- a system check or a swap test (Menu item Swap test for vehicles with PSM) must also be performed! Unintentional bending of the brake lines could lead to incorrect hydraulic allocation, despite the different thread sizes used (M12 x 1 and M10 x 1)!
^ If there is a fault indication during operation (when no assembly work was carried out beforehand), diagnosis and troubleshooting are also carried out with the Porsche System Tester 2! To do this, select the ABS or PSM system and read out the fault memory there! The fault can then be localized using the appropriate menus (Drive links/Actual values)!