Climatic Controls Operation (GROUP 87, NO. 09-08)

Publication date: 2009-10-15
Reference number: GROUP 87, NO. 09-08
Supersedes refnos: 2018511, GROUP 87, NO. 08-05

CLIMATIC CONTROLS OPERATION

TECHNICAL SERVICE BULLETIN

Reference Number(s): GROUP 87, NO. 09-08 (2018511), Date of Issue: October 15, 2009

VOLKSWAGEN:	2005-2009 (A5) Jetta; 2006-2009 Rabbit, GTI, R32, Passat, Passat Wagon; 2009 Tiguan
GROUP:	87 - Air Conditioner

Superceded Bulletin(s): GROUP 87, NO. 08-05, Date of Issue: August 11, 2008

SERVICE INFORMATION

APPLICABLE MODELS AND YEARS

Model(s)	Year	Eng. Code	Trans. Code	VIN Range From	VIN Range To
(A5) Jetta	2005-2009	All	All	All	All
Rabbit, GTI, R32	2006-2009	All	All	All	All
Passat, Passat Wagon	2006-2009	All	All	All	All
Tiguan	2009	All	All	All	All

CONDITION

NOTE: Supersedes T.B. Group 87 number 08-05 dated Aug. 11, 2008 to update warranty detail.

87 09 08 Oct. 15, 2009 2018511 Supersedes T.B. Group 87 number 08-05 dated Aug. 11, 2008 to update warranty detail.

Climatic Controls Operation

Customer perceives selected temperature is not blowing the same temperature as selected.

TECHNICAL BACKGROUND

Climatic controls the air temperature so that selected temperatures are reached as soon as possible, and then remain constant.

Temperature requests are relayed to the control module by a potentiometer in the rotary switch.

The information in this Technical Bulletin is to verify the controls are operating to specifications.

PRODUCTION SOLUTION

Not applicable.

SERVICE

Connect VAS 5051B, 5052/A.

Tip: Engine must be running with minimum coolant operating temperature of 87° Celsius (190° F). (see measuring value block 4/4).

Open all doors and windows to equalize cabin temperature and ambient air temperature.

Tip: Do not use instrument cluster display to verify ambient or coolant temperature. (use measuring value blocks 4 group 4, and confirm ambient temperature with an external source i.e. thermometer, thermocouple).

Select air distribution selection to center vents.
Close all side vents but keep center vents open.
Turn blower speed to 1 and press A/C button to turn system ON.
Turn off the air recirculation.
Insert a thermometer or thermocouple into center vent to obtain measurements.

Tip: Allow approximately 2 minutes for temperature to reach and maintain the stated temperature as shown on table below.

Temperature measurements on the table below are for reference only, Actual values may vary.

Validate the temperature at the minimum temperature (position 1).
Validate the temperature at the mid temperature (position 5).
Validate the temperature at the maximum temperature (position 9).
Validate the temperature variation at a position between (position 1) and (position 5)
Validate the temperature variation at a position between (position 5) and (position 9).

Fig 1: Temperature Selector Rotary Switch

TEMPERATURE MEASUREMENTS

Position of Temperature Knob °F
Ambient Temperature	1	2	3	4	5	6	7	8	9
59°F	45	71	83	96	115	125	150	155	156
68°F	46	54	65	76	89	111	127	149	152
77°F	46	46	50	56	68	80	93	116	151
86°F	46	46	46	46	55	66	78	94	152
95°F	45	45	45	45	50	50	64	74	150
Position of Temperature Knob °C
Ambient Temperature	1	2	3	4	5	6	7	8	9
15°C	7	22	28	36	46	52	66	68	69
20°C	8	12	18	25	32	44	53	65	67
25°C	8	8	10	13	20	27	34	47	66
30°C	8	8	8	8	13	19	26	34	67
35°C	7	7	7	7	10	10	18	23	66

If temperature measurements are within a negligible range of table readings, system is operating to specifications and no further diagnosis is necessary.

Advise customer the system is operating as designed, and refer customer to owner's manual for description of system operation.

If the temperature did not adjust within minimum and maximum positions:

Replace Heating and A/C control, see Repair Manual Group 87, Air Conditioning, in ElsaWeb.

WARRANTY

WARRANTY INFORMATION

To determine if this procedure is covered under Warranty, always refer to the Warranty Policies and Procedures Manual ⁽¹⁾

Model(s)

Year(s)

Eng. Code(s)

Trans. Code(s)

VIN Range From

VIN Range To

(A5) Jetta

2005-2009

All

Rabbit, GTI, R32

2006-2009

All

Passat, Passat Wagon

2006-2009

All

Tiguan

2009

All

Claim Type:

Use applicable Claim Type ⁽¹⁾

SAGA Coding

Service Number:

Damage Code

HST

Damage Location (Depends on Service No.)

Parts Manufacturer (removed part)

8704

0040

Use applicable when indicated in ElsaWeb (L/R)

B H B ⁽²⁾

Labor Operation ⁽³⁾ :

87040399 = 60 TU

Diagnostic Time ⁽⁴⁾

GFF Time expenditure

01500000 = 00 TU max.

Road Test

01210002 & 01210004

Technical Diagnosis

0132xxxx = 00 TU max.

Claim Comment: Input "As per Technical Bulletin 2018511" in comment section of Warranty Claim.

⁽¹⁾	Vehicle may be outside any Warranty in which case this Technical Bulletin is informational only

⁽²⁾	Code per warranty vendor code policy.

⁽³⁾	Labor Time Units (TUs) are subject to change with Elsa updates.

⁽⁴⁾	Documentation required per Warranty Policy & Procedures Manual.

REQUIRED PARTS AND TOOLS

No Special Parts Required.

TOOL INFORMATION

Tool Description	Tool No:
VAS Diagnostic Tool	VAS 5051B, 5052/A (Base CD V15.00 and Brand CD V15.94 or higher)

ADDITIONAL INFORMATION

All part and service references provided in this Technical Bulletin are subject to change and/or removal. Always check with your Parts Dept. and Repair Manuals for the latest information .