2004-2008 Volkswagen Beetle Service & Repair Manual

1998-2004 ACCESSORIES & EQUIPMENT Cruise Control - New Beetle CRUISE CONTROL SYSTEM (CCS) THROUGH M.Y. 2001 GENERAL INFORMATION All cruise control system functions are controlled by the applicable Engine Control Module (ECM). The processing of electronic engine controls and cruise control functions are integrated in the ECM. Other than the cruise control switches on the steering column, the clutch and brake pedal switches and related wiring, there are no separate cruise control components to be serviced. As the electronic throttle control operations are monitored by On Board Diagnostic (OBD), Diagnostic Trouble Codes (DTC) pertaining to engine electronics that are stored in DTC memory may be relevant to cruise control function. Always check DTC memory in ECM first before troubleshooting (Function 02). CRUISE CONTROL SYSTEM (CCS) THROUGH M.Y. 2001, SERVICING The operating status of the cruise control system, cruise control switches, brake and clutch switches can be checked using the following procedure. Special tools and equipment z VAG 1551/1552 Scan Tool (ST) with VAG 1551/3 adapter cable, or VAS 5051 Vehicle Diagnostic Testing and Information System z Connector test kit VW 1594 z Test box VAG 1598A z Multimeter Fluke 83 z Wiring diagram Test requirements z Battery (B+) voltage at least 11.5 V z Ground connections on engine, transmission and battery OK z Diagnostic Trouble Code (DTC) memory of Engine Control Module (ECM) checked and OK z Fuse S5 OK z Fuse S43 OK Test sequence NOTE: z On some 1998 model year vehicles with automatic transmission, the CCS

z Connect VAG 1551/1552 Scan Tool See VAG 1551 SCAN TOOL (ST), CONNECTING, SELECTING FUNCTIONS & CHECKING CONTROL MODULE VERSIONS . z Switch on ignition z Press buttons 0 and 1 to select "Engine electronics" address word 01. Indicated on display (example only) z Press --> button. Fig. 1: VAG 1551/1552 Scan Tool Display - Cruise Control System (1 Of 4) Courtesy of VOLKSWAGEN OF AMERICA, INC. Indicated on display z Press buttons 0 and 8 to select function 08 "Read measuring value block". z Press Q button to enter input. switch is not supplied with voltage until the vehicle speed exceeds 30 km/h (approx. 19 mph) and the selector lever is in position D, 3 or 2. Once the switch has been supplied with voltage it will also remain live at idle, provided a driving range other than 1 or R is selected. z If the cruise control is inoperative on 1.9L TDI models, check if system is activated, See CRUISE CONTROL SYSTEM - TDI ENGINES, ACTIVATING .

Fig. 2: VAG 1551/1552 Scan Tool Display - Cruise Control System (2 Of 4) Courtesy of VOLKSWAGEN OF AMERICA, INC. Indicated on display Fig. 3: VAG 1551/1552 Scan Tool Display - Cruise Control System (3 Of 4) Courtesy of VOLKSWAGEN OF AMERICA, INC. For all 1.8 Liter Turbo & 2.0 Liter engines: z Press 0, 6 and 6 buttons to select "Display group 66". For 1.9 Liter TDI engine: z Press 0, 0 and 6 buttons to select "Display group 06". z Press Q button to enter input. Indicated on display

Fig. 4: Vag 1551/1552 Scan Tool Display - Cruise Control System (4 Of 4) Courtesy of VOLKSWAGEN OF AMERICA, INC. z Refer to the following engine specific tables to interpret values in display fields 2 - 4: z 1.8 Liter Turbo (codes APH & AWV). See 1.8 LITER TURBO (CODES APH, AWV & AWP) & 2.0 LITER (CODES AVH & AZG) . z 1.9 Liter TDI. See 1.9 LITER TDI . z 2.0 Liter (code AEG). See 2.0 LITER (CODE AEG) . z 2.0 Liter (codes AVH & AZG). See 1.8 LITER TURBO (CODES APH, AWV & AWP) & 2.0 LITER (CODES AVH & AZG) . 1.8 Liter Turbo (codes APH, AWV & AWP) & 2.0 Liter (codes AVH & AZG) 1.8 LITER TURBO (CODES APH, AWV & AWP) & 2.0 LITER (CODES AVH & AZG) SPECIFICATION NOTE: z The road speed signal input to the ECM for cruise control function can be confirmed by performing a road test and observing that the km/h value indicated in display field 1 changes. z Always observe the appropriate safety precautions during road test. Display Group Display Field Designation Test Conditions Display Corrective Actions 66 2 Clutch vacuum vent valve -F36- and Brake switch - F47- Clutch and brake not depressed 1000 z Check for open/short circuit in wiring and connections to -F36- and/or -F47- using wiring diagram z Checking -F36- and/or -F47-: See "ADDITIONAL SIGNALS, CHECKING ". Brake 1011

2.0 Liter (code AEG) 2.0 LITER (CODE AEG) SPECIFICATION depressed Clutch depressed 1100 4 Cruise control switch -E45- -E45- in OFF position 0000 z Check for open/short circuit in wiring and connections to -E45-, -E227- and Engine Control Module (ECM) using wiring diagram -E45- in OFF position before switch point 0001 -E45- in ON position 0011 -E45- in RES position 1011 Button for cruise control SET - E227- -E45- in ON position -E227- SET button depressed 0111 Display Group Display Field Designation Test Conditions Display Corrective Actions 66 2 Clutch vacuum vent valve -F36- and Brake switch - F47- Clutch and brake not depressed 1000 z Check for open/short circuit in wiring and connections to -F36- and/or -F47- using wiring diagram (2) z Checking -F36- and/or -F47-: See "ADDITIONAL SIGNALS, CHECKING ". Brake depressed 1111 Clutch depressed 1110 4 Cruise control switch -E45- (1) -E45- in OFF position 0011 z Check for open/short circuit in wiring and connections to -E45-, -E227- and Engine Control Module (ECM) using wiring diagram -E45- in OFF position before 0010

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2004-2008 Volkswagen Beetle Service & Repair Manual

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