Volkswagen Golf / Golf GTI / Jetta. Manual — part 179

01-258

Evaluating display group 77, display zone 4 - Secondary air system diagnosis

Appears on display

Possible cause

Corrective action

Check not performed
or has not finished:
Test OFF

DTC stored in DTC memory

- Check DTC memory

Page 01-23

, DTC memory,

checking and erasing

Requirements to complete

the diagnosis have not been
achieved

- Check test conditions,
perform diagnosis again

Continuation

next Page

Measured value (data) blocks

01-259

Appears on

display

Possible cause

Corrective action

Functions Leak
diagnosis not OK.:
Syst. n.OK.

DTC stored in DTC

memory

- Check DTC memory

Page 01-

23

, DTC memory, checking and

erasing

Secondary Air Injection

(AIR) Solenoid Valve -
N112- faulty

Repair Manual, 2.8 Liter VR6 4V

Engine Mechanical, Engine Code(s):
BDF; Repair Group 26

- Check Secondary Air Injection
(AIR) Solenoid Valve

Page 01-

100

, Output Diagnosis Test Mode

(DTM)

- Replace Secondary Air Injection
(AIR) Solenoid Valve:

- Perform diagnosis again

Secondary Air Injection

(AIR) Pump Relay -
J299- faulty

Repair Manual, 2.8 Liter VR6 4V

Engine Mechanical, Engine Code(s):
BDF; Repair Group 26

- Check Secondary Air Injection
(AIR) Pump Relay:

Page 01-100

,

Output Diagnosis Test Mode (DTM)

- Replace Secondary Air Injection
(AIR) Pump Relay:

- Perform diagnosis again

Combi-valve faulty

Repair Manual, 2.8 Liter VR6 4V

Engine Mechanical, Engine Code(s):
BDF; Repair Group 26

- Check combi-valve:

- Perform diagnosis again

Measured value (data) blocks

01-260

Measured value blocks, display groups 86...89, 100 - Readiness code,
evaluating

Display group 86 - Readiness code

Engine running at idle

Read measured value block 86

Indicated on

display

xxxxxxxx xxxxxxxx xxxxxxxx ---

1

2

3

4

Display

zones

Specification

Evaluation

No display

---

---

Diagnosis status

---

---

Diagnosis status

---

---

Readiness code

00000000

Page 01-

261

Measured value (data) blocks

01-261

Significance of figures in 8 digit number block, display zone 1 - Readiness code

The readiness code is generated only when all display zones show 0

1 2 3 4 5 6 7 8

Diagnostic function

0 Three Way Catalytic Converter (TWC)

0

Three Way Catalytic Converter (TWC) heating (currently no
diagnosis/always "0")

0

Evaporative Emissions (EVAP) Canister system (Tank
ventilation system)

0

Secondary air system

0

Air conditioner (currently no diagnosis/always "0")

0

Oxygen Sensor (O2S)s

0

Oxygen Sensor (O2S) heating

0

Exhaust gas recirculation (not installed/always "0")

Measured value (data) blocks