45 Important infonnation about ABS 5.3 and ABS/TC5.3 · General Differen

911 Carrera (996) Anti-lock Brake System (ABS) 45 Important infonnation about ABS 5.3 and ABS/TC5.3 General Differences between ABS 5.3 and ABS/TC 5.3 The 911 Carrera (996) is fitted as standard ABS 5.3 = 3-channel system with an anti~ockbrake system (ABS 5.3). "Traction Control (TC)" is availableon (diagram: see Page 45 -3). special request on the basis of ABS 5.3. ABS/TC 5.3 = 4-channel system Traction Control (TC) is a combination of anti- (diagram: see Page 45 -5). slip control (ASR)and Automatic Brake Differential (ABD). The essential distinguishing features between TC is a further system for increasing ABS and ABS/fC are: driving safety. Number of brake lines at intermediatepiece ABS 5.3 is optimized with regard to installed (No. 8/ Figure 181 -96): volume and weight compared with the ABS 5. ABS 5.3 = 3 brake lines Control module (No.1), hydraulic unit (No.7), ABS/TC 5.3 = 4 brake lines pump-motor relay and valve relay (No.2) of ABS 5.3 and ABS/TC 5.3 form a unit that is located next to the brake master cylinder. TC OFFswitch for switching driving stability control on and off is not availableon vehicles with Solo ABS (ABS 5.3). 1 TC (ASR/ABD) warning light and TC (ASR/ABD) function light (information light) in vehicleswith ABSjTC. These lights light up when the ignition is a. switched on (lamp check). In vehicles with ABS 5.3 (Solo ABS)these lights are not fitted in the instrumentcluster. A figure showing the warning lights and the function light is shown on Page 45-6. 7 2 0 181 -98 Diagnosis and system checks on both systems are carried out with the Porsche System Tester 2. 45 Important information about ABS 5.3 and ABS/TC 5.3 45 -1 Printed in Germany, 1997 996451 ;=.-~