Installing Control Module/Cables/740/940 w/MCC year 1991
Installing control module and cables740/940 with MCC model year 1991-
B1
Preparations
- Clean evaporator according to Service Manual:
Section 8(87)
Climate control
700/900 1982-
section Y
- Make note of radio code if anti-theft coded radio installed.
Remove:
- Negative battery lead.
- Sound insulation on passenger side.
- Glove compartment.
- Cowl on passenger side.
- Ashtray.
- Cigarette lighter.
- Storage compartment.
- Detach and pull out central electronics module.
Refer to Service Manual:
Section 3(35-39) Lighting, instrumentation
(see group 37) and other electrical equipment 700/900 1982-
Section 8(82-86, 88) Interior, exterior 700/900 1982-
B2
Cable connections
Installing new relay on cable harness
- Take out cable harness (P/N 9148756) supplied with kit.
- Connect the relay in the kit to the 5-pin connector which is attached to the same end of the cable harness as the black-red cable.
B3
Attaching cable harness with relay
- Attach relay and cable harness above the heater vacuum reservoir, using a cable tie.
- Route the red-black cable inside the centre console side panel to the central electronics module.
- Connect cable to fuse 6 in terminal 4.
- Use cable tie to attach to existing cable harness.
B4
Install cables from relay to connector
- Locate connector on cable between heater and dashboard (on side of centre console).
- Separate connector and connect connector halves, from the new cable harness to the existing for each model year:
1991 model year:
- Connect 4-pin connectors with 3 cables included in the kit cable harness, to existing connectors.
1992-94 model year (shown here):
- Connect 2-pin connectors, included in the cable harness kit to existing connectors.
- Connect the two open connectors to each other.
B5
Removal of connectors from blower motor resistor
- Remove the bottom connector from the blower resistor.
B6
Connection of new connector in blower motor resistor and cable harness
- Connect 2-pin cable harness connectors between the detached connector and the bottom terminal on the blower resistor.
Installing control module from kit
B7
Connecting and mounting control module in cars without SRS (Airbag) and knee bolster
- Connect control module and cable harness connectors.
- Apply three sections of butyl tape to the control module.
- Install control module to dashboard side section with butyl tape.
B8
Connecting and mounting control module in cars with SRS (Airbag) and knee bolster
- Install control module on front of air hose under glove compartment with butyl tape and cable ties round duct and control module as illustrated.
- Attach cable harness to existing cable harness at side of SRS (Airbag) module with 2 cable ties, one as near to the connector as possible to avoid vibration on uneven road surfaces.
B9
Fastening cables in cars without SRS (Airbag) and knee bolster
- Attach cable harness to existing cable harness module with 2 cable ties, one as near to the connector as possible to avoid vibration on uneven road surfaces.
B10
Connection of cable to ground plate
- Connect the black-white cable included in the new cable harness to the ground plate on the right side of the cowl.
The ground plate is located behind the fuel control module.
B11
Route cables to engine compartment
- Route cables without housing receptacles to engine compartment through unused cutout in grommet under suspension strut brace.
- Attach the round housing receptacles included in the new cable harness on the cables in the engine compartment.
- Separate existing connectors on the cable between the A/C compressor and the receiver/drier.
- Connect cables from the new cable harness to the separated connectors.
B12
Location of cable sheath opening
The cable sheath is cut to drain off condensation.
- The cut conduit section should be placed at the lowest point along the route of the cable.
- Use butyl tape to seal the grommet.
- Use existing cable tie to clamp cables to firewall.
Function verification and information
B13
Check airing cycle is working
- Connect battery lead and start car.
- Turn on A/C system to start compressor. The A/C system starts if the temperature exceeds approx. 7°C (45°F).
- Make up a cable (about 2 meters (6 ft.) in length) to connect battery positive terminal to control module connector. Connect to green cable, connector terminal 6, for at least 30 seconds while compressor is operating.
- Turn off engine.
Airing cycle should begin after approximately 10 seconds and continue for approximately 1 second. - Remove cable between connector and battery.
B14
Finishing off
- Reinstall all components removed.
- Reset the clock and enter the anti-theft radio code if required.
B15
Information to car owner
- Carry out operations at the end of this service bulletin.