Volkswagen New Beetle. Manual - part 1978

 

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Volkswagen New Beetle. Manual - part 1978

 

 

Diagnostic mode 4: Reset/erase diagnostic data

Function 

This diagnostic mode performs the following functions: 

z

all emission relevant malfunctions in DTC memory will be erased,  

z

the operating conditions at which a malfunction was stored will be reset. See DIAGNOSTIC MODE 2: 
CHECKING OPERATING CONDITIONS
 .  

z

all adaptation values are being reset,  

z

all test results of the diagnostic functions are being reset.  

Requirement 

z

DTC memory was checked. See DIAGNOSTIC MODE 3: CHECK DTC MEMORY .  

Work procedure 

z

Connect diagnostic tester. See CONNECT DIAGNOSTIC TESTER .  

z

Start engine and let run at idle.  

z

Under address word 33, select "Diagnostic mode 4: Reset/erase diagnostic data."  

Erased or reset: 

z

Number and content of the DTC memories,  

z

Operating conditions,  

z

Adaptation values,  

z

Test results.  

z

End diagnosis and switch ignition off.  

z

Generate readiness code. See READINESS CODE, GENERATING .  

Diagnostic mode 5: Check output of oxygen sensor signals 

Function 

The static values of the oxygen sensors are indicated via this diagnostic mode. 

The values of the individual oxygen sensor signal outputs must reach the specified value or must be within the 
min.- and max.-limits. 

Requirements 

z

There must not be any DTCs stored in DTC memory. See DIAGNOSTIC MODE 3: CHECK DTC 
MEMORY
 .  

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 2.0L Generic Scan Tool - New Beetle

  

z

Coolant temperature must be at least 80 °C. See DIAGNOSTIC MODE 1: CHECK MEASURED 
VALUES
 .  

Work procedure 

z

Connect diagnostic tester. See CONNECT DIAGNOSTIC TESTER .  

z

Start engine and let run at idle.  

z

Under address word 33, select "Diagnostic mode 5: Check output of oxygen sensor signals".  

z

Select the desired output of oxygen sensor signals "Test-ID XX"  

EVALUATION OF OUTPUT OF OXYGEN SENSOR SIGNALS (DIAGNOSTIC MODE 5) 

Test- 
ID:

Evaluation of output of 

oxygen sensor signals

Vehicles with engine code

AEG

AVH, AZG, BDC

01

Bank 1 sensor 2: rich to lean 

sensor barrier voltage

-

See Evaluation test-ID 09: Time 

period between sensor shift 

procedures (Vehicles with engine code 

AEG)

02

Bank 1 sensor 2: lean to rich 

sensor barrier voltage

-

See Evaluation test-ID 02 Bank 1 

Sensor 2: lean to rich sensor barrier 

voltage (Vehicles with engine code 

AVH, AZG, BDC)

07

Minimum voltage at sensor 

for test cycle

See Evaluation test-ID 

07: Minimum voltage at 

sensor for test cycle 

(Vehicles with engine 

code AEG)

See Evaluation test-ID 07 Bank 1 

Sensor 2: Minimum voltage at sensor 

for test cycle (Vehicles with engine 

code AVH, AZG, BDC)

08

Maximum voltage at sensor 

for test cycle

See Evaluation test-ID 

08: Maximum voltage at 

sensor for test cycle 

(Vehicles with engine 

code AEG)

See Evaluation test-ID 08 Bank 1 

Sensor 2: Maximum voltage at sensor 

for test cycle (Vehicles with engine 

code AVH, AZG, BDC)

09

Time period between sensor 

shift procedures

See Evaluation test-ID 

09: Time period between 

sensor shift procedures 

(Vehicles with engine 

code AEG)

-

129

Bank 1 sensor 1: Actual 

value of oxygen sensor 

voltage

-

See Evaluation test-ID 129 Bank 1 

Sensor 1: Actual value of oxygen 

sensor voltage (Vehicles with engine 

code AVH, AZG, BDC)

130

Bank 1 sensor 1: Control 

barrier voltage

-

See Evaluation test-ID 130 Bank 1 

Sensor 1: Control barrier voltage 

(Vehicles with engine code AVH, 

AZG, BDC)

131

Bank 1 sensor 1: Dynamic 

-

See Evaluation test-ID 131 Bank 1 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 2.0L Generic Scan Tool - New Beetle

  

z

End diagnosis and switch ignition off.  

Evaluation test-ID 07: Minimum voltage at sensor for test cycle (Vehicles with engine code AEG) 

EVALUATION TEST-ID 07: MINIMUM VOLTAGE AT SENSOR FOR TEST CYCLE (ENGINE 
CODE AEG)
 

If the specified value is not reached: 

z

Short circuit to Ground (GND) in oxygen sensor or in wire:  

z

Check Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC). 
See CHECK OXYGEN SENSOR AND OXYGEN SENSOR REGULATION BEFORE 
CATALYTIC CONVERTER
 .  

z

Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC). 
See CHECK OXYGEN SENSOR AND OXYGEN SENSOR REGULATION BEFORE 
CATALYTIC CONVERTER
 .  

If the specified value is exceeded: 

z

Oxygen sensor not ready for operation  

z

Oxygen sensor heater faulty:  

z

Check oxygen sensor heater for Oxygen Sensor (O2S) before Three Way Catalytic Converter (TWC). See 
CHECK OXYGEN SENSOR AND OXYGEN SENSOR REGULATION BEFORE CATALYTIC 
CONVERTER
 .  

z

Check oxygen sensor heater for Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC). 
See CHECK OXYGEN SENSOR AND OXYGEN SENSOR REGULATION BEFORE 
CATALYTIC CONVERTER
 .  

z

Short circuit to B+ or open circuit in wiring in oxygen sensor or in wire: 

value

Sensor 1: Dynamic value (Vehicles 

with engine code AVH, AZG, BDC)

132

Bank 1 sensor 1: Oxygen 

sensor shift via oxygen 

sensor control behind Three 

Way Catalytic Converter 

(TWC) (bank 1 sensor 2)

-

See Evaluation test-ID 132 Bank 1 

Sensor 1: Oxygen sensor shift via 

oxygen sensor control behind Three 

Way Catalytic Converter (TWC) 

(bank 1 sensor 2) (Vehicles with engine 

code AVH, AZG, BDC)

Oxygen sensor

Specified value:

min.

max.

Bank 1 sensor 1

1

80

Bank 1 sensor 2

1

80

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 2.0L Generic Scan Tool - New Beetle

  

z

Check Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC). 
See CHECK OXYGEN SENSOR AND OXYGEN SENSOR REGULATION BEFORE 
CATALYTIC CONVERTER
 .  

z

Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC). 
See CHECK OXYGEN SENSOR AND OXYGEN SENSOR REGULATION BEFORE 
CATALYTIC CONVERTER
 .  

Evaluation test-ID 08: Maximum voltage at sensor for test cycle (Vehicles with engine code AEG) 

EVALUATION TEST-ID 08: MAXIMUM VOLTAGE AT SENSOR FOR TEST CYCLE (ENGINE 
AEG)
 

If the specified value is not reached: 

z

Oxygen sensor not ready for operation  

z

Oxygen sensor heater faulty:  

z

Check oxygen sensor heater for Oxygen Sensor (O2S) before Three Way Catalytic Converter (TWC). See 
CHECK OXYGEN SENSOR AND OXYGEN SENSOR REGULATION BEFORE CATALYTIC 
CONVERTER
 .  

z

Check oxygen sensor heater for Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC). 
See CHECK OXYGEN SENSOR AND OXYGEN SENSOR REGULATION BEFORE 
CATALYTIC CONVERTER
 .  

z

Short circuit to Ground (GND) or open circuit in wiring in oxygen sensor or in wire:  

z

Check Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC). 
See CHECK OXYGEN SENSOR AND OXYGEN SENSOR REGULATION BEFORE 
CATALYTIC CONVERTER
 .  

z

Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC). 
See CHECK OXYGEN SENSOR AND OXYGEN SENSOR REGULATION BEFORE 
CATALYTIC CONVERTER
 .  

If the specified value is exceeded: 

z

Short circuit to B+ in oxygen sensor or in wire:  

z

Check Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC). 
See CHECK OXYGEN SENSOR AND OXYGEN SENSOR REGULATION BEFORE 
CATALYTIC CONVERTER
 .  

Oxygen sensor

Specified value:

min.

max.

Bank 1 sensor 1

100

190

Bank 1 sensor 2

100

190

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 2.0L Generic Scan Tool - New Beetle

  

 

 

 

 

 

 

 

Content   ..  1976  1977  1978  1979   ..