A/C - Unpleasant Odors From Vents

S40(-04)/V40 2000-

Section
8

Group
87

No.
0025

Year
04

Month
02

Control module for the blower fan motor, installing

Background:

To minimize the risk of unpleasant odors from occuring in the heating/ventilation system, a kit can be installed that activates the blower fan for set periods after the ignition is switched off.

Important:
This control module may not be used if the vehicle is equipped with an ultra sonic alarm.





Materials

Climate control unit
Control module blower fan motor, installing

System background 1

Note!
The system stops functioning if the battery voltage falls below 12.5 Volts. This is to prevent the battery from discharging.

To activate the system, the ambient temperature must be at least 16°C. The system activation is dependant upon ambient temperature and not air conditioning usage.
The fan runs at full speed for 10 seconds, starting 30 seconds after the ignition is turned off.
After 10 minutes the fan starts again and runs for 10 seconds.

Note!
This cycle is repeated for approximately two hours.

During this time, the fan motor will run at full speed for a maximum of two minutes in total.
If the engine is started during this time, the start system is always reset.





Preparations 2

Make a note of the radio code.
Switch off the ignition.
Disconnect the battery negative lead.
Remove:
- the soundproofing panels on the driver and passenger sides
- the side panels on the center console.

Note!
Set the blower fan switch to 0.





Assembling a new control module from the kit 3

Take out the new control module and the mounting plate.
If necessary, bend out the flanges on the mounting plate so that the distance between the edges of the flanges is 75 mm.
Remove the backing from the tape on the control module.

Note!
Ensure that the hole (2) is aligned with the wiring going into the control module as illustrated.

Install the mounting plate on the control module as illustrated. If necessary, bend the flanges outwards to secure the control module on the mounting plate.





Installing the new control module on the blower fan housing 4

Disconnect the connector on the blower fan motor.
Carefully bend the connector downwards and press the catch upwards using a small screwdriver. Pull the connector out at the same time.
Position the new control module under the fan shroud.
Install the screw and washers supplied into the two hollow shafts (1) on the housing as illustrated.
Remove the connector from the relay.





Connecting the cable harness 5

Connect the cable harness to the relay and the fan motor.
Position the long cable on the underside of the dashboard behind the center console and route it towards to the driver's side.
Secure the cable harness with the tie straps.

Note!
The wiring must not be stretched or positioned where it could come into contact with moving components or sharp objects.





Connecting the cable to the junction box (model year 2000) 6

Route the cable along the existing cable harness under the steering column and onwards to the junction box.
Remove the junction box from the dashboard mounting bracket.
Disconnect the two upper connectors from the central electronic module (CEM) to get better access.

A: Remove the connector from kit cable.
Open the secondary lock from the connector (from the kit) by moving it upwards.
Remove the cable by pressing down the locking tab (see illustration) using terminal removal tool 951 2636 on the cable terminal while pulling the cable out of the connector at the same time.





B: Install the terminal in the existing connector.
Remove the connector from the junction box at the top right front side.
Open the secondary lock from the existing connector by moving it upwards.
Install the cable in position (4) in the existing connector.
Pull the cable to ensure that it is secured. Close the secondary lock.





C: Connect the cable to the junction box.
Connect the cable to the junction box at the top right front side. See the illustration.
Secure the cable harness. The wiring must not be stretched or positioned where it could come into contact with moving components or sharp objects.
Reconnect the connectors to the central electronic module (CEM).
Install the junction box and secure it at the dashboard bracket.





Connecting the cable to the junction box 7

Route the cable along the existing cable harness under the steering column and onwards to the junction box.
Remove the junction box from the mounting for the dashboard-mounting bracket.
Disconnect the two upper connectors from the central electronic module (CEM) (or remove) to gain better access.
Connect the cable to the junction box at the top right front side. See the illustration.
Secure the cable harness with tie straps. The wiring must not be stretched or positioned where it could come into contact with moving components or sharp objects.
Reconnect the connectors to the central electronic module (CEM) and reinstall (if removed).
Install the junction box and secure it at the dashboard bracket.





Activating and checking the ventilation system 8

Turn the ignition to position II.

Caution!
Ensure that no one is in the car when connecting the battery.

Connect the battery negative lead. Wait at least 10 seconds.

Caution!
Switch off the ignition after 10 seconds. After approximately 20 seconds, the blower fan motor starts and runs at full speed for approximately two seconds.

Note!
If the ambient temperature is above 16°C the blower fan motor will start and run two times after another 30 seconds.

Enter the radio code. Set the clock.
Check that the ventilation system is working normally by starting the motor. Check the functions of the ventilation system.

Finishing work 9

Install:
- the soundproofing panel on the driver's side
- the two side panels for the center console
- the soundproofing panel on the passenger side.





WARRANTY STATEMENT:
Claims may be submitted under the New Car Warranty when there is a documented customer complaint, using claim type 01.