heater AUDI TT 1995 8N / 1.G ATW Engine Oxygen Sensor Control Workshop Manual
[x] Cancel search | Manufacturer: AUDI, Model Year: 1995, Model line: TT, Model: AUDI TT 1995 8N / 1.GPages: 37, PDF Size: 0.28 MB
Page 3 of 37
24-73
Display fields
1 2 3 4
Display group 030: Oxygen sensor status
Display
X X X X X X
Indicated
Oxygen sensor status, bank 1, sensor 1 Oxygen sensor status, bank 2, sensor 1
Functional
range 0 = off
1 = on 0 = off
1 = on
Specified
value 1 1 1 1 1 0
Note
If specified value is not obtained Page 24
-80
If specified value is obtained but there is a malfunction stored in DTC memory Check oxygen
sensor adaptation values and control, Page 24
-74
Significance of 3 digit indications in display group 030 X
X
X
Display fields 1 and 2
X Oxygen sensor control: 0= not active; 1 = active
X Operational readiness of oxygen sensor: 0= not active; 1 = active
X Condition of oxygen sensor heater: 0= not active; 1 = active
Note:
The first field of the 3 digit indication (heating) fluctuates between 0 and 1.
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Page 21 of 37
24-91
Display fields
1 2 3 4
Display group 030: Oxygen sensor status with engine at idle
Display X X X
X X X
Indicated Oxygen sensor status, bank 1, sensor 1
Oxygen sensor status Bank 2, sensor 1
Functional range 0 = off
1 = on 0 = off
1 = on
Specified value 1 1 1
1 1 0
Note
If specified value is not obtained Page 24
-99
Significance of 3 digit indications in display group 030 X
X
X
Display fields 1 and 2
X Oxygen sensor control: 0= not active; 1 = active
X Operational readiness of oxygen sensor: 0= not active; 1 = active
X Condition of oxygen sensor heater: 0= not active; 1 = active
Note:
Oxygen sensor control of oxygen sensor behind catalytic converter (B1-S2) is not active without engine load.
The first position of the 3 digit indication (heating) fluctuates between 0 and 1.
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Page 29 of 37
24-99
Oxygen Sensor (O2S) heater -Z19- and
oxygen sensor heater 1 -Z29- for oxygen
sensor before catalytic converter and
oxygen sensor behind catalytic converter,
checking
Special tools and equipment
VAG1526A
VAG1594A
VAG1598/31
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Page 35 of 37
24-104
Oxygen Sensor (O2S) heater -Z19- for oxygen sensor before catalytic
converter:
Oxygen sensor heater 1 -Z29- for oxygen sensor behind catalytic
converter:
If wire connection is OK, but there is no Ground (GND) supply for oxygen
sensor heating: - Check following wire connection for open circuit:Harness connector
Terminal
VAG1598/31 test box
Socket
2 5
Harness connector
Terminal
VAG1598/31 test box
Socket
2 63
- Repair open circuit if necessary.
- Replace Engine Control Module (ECM) Page 24
-23
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