Audio System (Electrical): Other Saab 9-3 II

CD Player/Changer, Front (355F)

CD Player/Changer, Rear (355R), CV

Main Unit, Radio (353)

Amplifier, Front Speaker (354F), 4D

To Fit

Scheme 54

Scheme 55

1. Plug in the connector.
2. Fit the amplifier by hooking into the two brackets.
3. Fit the screw.
4. Fit «FRONT SEAT»(ref-275882-S09702464062007122900000) .
5. Carry out «PROCEDURE AFTER CHANGING THE CONTROL MODULE»(ref-275865-S17743978662007122900000) .
6. Check the function.

Amplifier, Front Speaker (354F), CV

Amplifier, Rear Speaker (354R), 4D

Scheme 56

Scheme 57

1. Plug in the connector.
2. Fit the amplifier. You should hear a click.
3. Close the side hatch.
4. Carry out «PROCEDURE AFTER CHANGING THE CONTROL MODULE»(ref-275865-S17743978662007122900000) .
5. Check the function.

Amplifier, Rear Speaker (354R), CV

Scheme 58

Scheme 59

1. Plug in the connector.
2. Fit the amplifier. You should hear a click.
3. Carry out «PROCEDURE AFTER CHANGING THE CONTROL MODULE»(ref-275865-S17743978662007122900000) .
4. Check the function.
5. Fit «LUGGAGE COMPARTMENT TRIM, CV»(ref-275837-S20608773682007122900000) .

Amplifier, Rear Speaker (354R), 5D

Scheme 60

1. Plug in the connector.
2. Fit the amplifier.
3. Close the hatch.
4. Fit «REAR SIDE TRIM, 5D»(ref-275837-S04125456152007122900000) .
5. Carry out «PROCEDURE AFTER CHANGING THE CONTROL MODULE»(ref-275865-S17743978662007122900000) .
6. Check the function.

Scheme 61

Scheme 62

1. Remove «C-PILLAR TRIM»(ref-275837-S09167496422007122900000) .
2. Unplug the connectors from the amplifier and the rear window.
3. Remove the amplifier.

Scheme 63

Scheme 64

1. Fit the antenna amplifier
2. Plug the connectors into the amplifier and the rear window.
3. Fit «C-PILLAR TRIM»(ref-275837-S09167496422007122900000) .

Scheme 65

Scheme 66

1. Remove «REAR SIDE TRIM, 5D»(ref-275837-S04125456152007122900000)
2. Unplug the connectors on the amplifier and rear window. LH RH
3. Remove the amplifier.

Scheme 67

Scheme 68

1. Fit the antenna amplifier LH RH
2. Plug the connectors into the amplifier and the rear window.
3. Fit «REAR SIDE TRIM, 5D»(ref-275837-S04125456152007122900000)

Scheme 69

1. Remove «AIRBAG, DRIVER (333D)»(ref-275881-S18376743082007122900000) .
2. Remove the steering wheel control connectors.
3. Undo the screws. Remove the controls using «82 93 474 REMOVAL TOOL»(ref-275865-S28612027982007122900000) .
4. Remove the cable from the cable bracket.

Scheme 70

1. Fit the steering wheel controls.
2. Fit the cable to the cable bracket.
3. Fit the screws securing the steering wheel controls.
4. Plug in the connector.
5. Fit «AIRBAG, DRIVER (333D)»(ref-275881-S18376743082007122900000) .

Scheme 71

Scheme 72

1. Remove «PARCEL SHELF TRIM»(ref-275837-S23343691942007122900000) .
2. Remove the screw cover from the C-pillar using «82 93 474 REMOVAL TOOL»(ref-275865-S28612027982007122900000) .
3. Remove the screw.
4. Remove the C-pillar trim.
5. Unplug the connector on the rear window.
6. Remove the nut in the C-pillar.

Scheme 73

Scheme 74

1. Plug in the connector on the rear window.
2. Fit the nut on the C-pillar.
3. Fit the C-pillar trim.
4. Fit the screw.
5. Fit the screw cover to the C-pillar.
6. Fit «PARCEL SHELF TRIM»(ref-275837-S23343691942007122900000) .

Scheme 75

1. Remove «GLOVE BOX»(ref-275837-S35412718882007122900000) .
2. Bend aside the sound insulation and unplug the connectors from the converting connector.
3. Remove the converting connector.

Scheme 76

1. Fit the converting connector. Tightening torque 8 Nm (6 lbf ft)
2. Plug in the converting connector.
3. Reposition the sound insulation.
4. Fit «GLOVE BOX»(ref-275837-S35412718882007122900000) .

Infotainment Control Panel, ICM (736)

Scheme 77

Scheme 78

1. Plug in the connector.
2. Fit the ICM unit.
3. Position and fit the air vent. Carry out «PROCEDURE AFTER CHANGING THE CONTROL MODULE»(ref-275865-S17743978662007122900000) .

Button, Control Panel, Infotainment System, ICM

Buttons can be in two positions - depressed (locked position) and extended (adjustment position). Depress the button to switch position.

1. Align the button against the unit and press in.

Scheme 79

Scheme 80

1. Remove the speaker grille using «82 93 474 REMOVAL TOOL»(ref-275865-S28612027982007122900000)
2. Remove the speaker screws. Lift up the speaker.
3. Remove the treble speaker using «82 93 474 REMOVAL TOOL»(ref-275865-S28612027982007122900000) .
4. Unplug the speakers' connector.

Scheme 81

Scheme 82

1. Plug in the speakers' connector.
2. Fit the treble speaker. Make sure that the wiring harness fits correctly in the groove.
3. Fit the speaker.
4. Fit the speaker grille.

Scheme 83

1. Remove «PARCEL SHELF TRIM»(ref-275837-S23343691942007122900000) .
2. Remove «C-PILLAR TRIM»(ref-275837-S09167496422007122900000) .
3. Remove the 4 screws for the speaker. Lift up and unplug the connector.

Scheme 84

1. Plug in the speaker's connector.
2. Position the speaker. Fit the speaker's screws. IMPORTANT: Make sure no cables or connectors are pinched.
3. Fit «C-PILLAR TRIM»(ref-275837-S09167496422007122900000) .
4. Fit «PARCEL SHELF TRIM»(ref-275837-S23343691942007122900000) .

Scheme 85

1. Lift up the floor.
2. Unplug the connector.
3. Remove the speaker.

Scheme 86

1. Plug in the speaker's connector.
2. Fit the speaker. IMPORTANT: Make sure no cables or connectors are pinched.
3. Close the floor.

Scheme 87

1. Remove «BACKREST, REAR SEAT, CV»(ref-275882-S28521539302007122900000) .
2. Remove the nuts.
3. Carefully lift out the speaker and unplug the connectors.

Scheme 88

1. Plug in the speaker connectors and fit the speaker in place.
2. Fit the nuts. IMPORTANT: Make sure no cables or connectors are pinched.
3. Install «BACKREST, REAR SEAT, CV»(ref-275882-S28521539302007122900000) .

Scheme 89

1. Remove «PARCEL SHELF TRIM»(ref-275837-S23343691942007122900000) .
2. Remove the speaker using a screwdriver. Use the screwdriver to carefully prise in the 3 clips for the speaker. Lift up and unplug the connector.

Scheme 90

1. Plug in the speaker's connector.
2. Position the speaker. Press the speaker in. IMPORTANT: Make sure no cables or connectors are pinched.
3. Fit «PARCEL SHELF TRIM»(ref-275837-S23343691942007122900000) .

Scheme 91

1. Remove «REAR SIDE TRIM, CV»(ref-275837-S38469841952007122900000) .
2. Remove the speaker's screws and lift out the speaker.

Scheme 92

1. Position the speaker and fit the screws.
2. Install «REAR SIDE TRIM, CV»(ref-275837-S38469841952007122900000) . IMPORTANT: Make sure no cables or connectors are pinched.

Scheme 93

1. Remove «PARCEL SHELF TRIM»(ref-275837-S23343691942007122900000) .
2. Remove the speaker using a screwdriver. Use the screwdriver to carefully prise in the 3 clips for the speaker.
3. Remove the treble speaker using «82 93 474 REMOVAL TOOL»(ref-275865-S28612027982007122900000) .
4. Unplug the connector.

Scheme 94

1. Plug in the speaker's connector.
2. Press the speaker in.
3. Fit the speaker. IMPORTANT: Make sure no cables or connectors are pinched.
4. Fit «PARCEL SHELF TRIM»(ref-275837-S23343691942007122900000) .

Scheme 95

1. Remove «DOOR TRIM, FRONT»(ref-275837-S21790663982007122900000) .
2. Carefully fold the water barrier down.
3. Unplug the speaker's connector.
4. Remove the speaker's screws and lift away the speaker.

Scheme 96

1. Position the speaker and fit the speaker's screws.
2. Plug in the speaker's connector.
3. Fit the water barrier
4. Fit «DOOR TRIM, FRONT»(ref-275837-S21790663982007122900000) .
5. Cars with pinch protection: Carry out «CALIBRATION OF PINCH PROTECTION»(ref-275877-S29850865622007122900000) .

Scheme 97

1. Remove «TAILGATE TRIM»(ref-275837-S11244227022007122900000) .
2. Remove the speaker screws. IMPORTANT: Take care when releasing the locking mechanism on the connector so as not to damage the connector. Pull the halves straight apart to avoid bending the pins. For further information regarding connectors, refer to «CONNECTORS, HANDLING AND INSPECTION»(ref-275865-S20727114862007122900000) .
3. Remove the speaker and unplug the connector.

Scheme 98

1. Plug in the connector.
2. Position the speaker. Fit the speaker's screws.
3. Fit «TAILGATE TRIM»(ref-275837-S11244227022007122900000) .

Scheme 99

1. Entertainment head unit, EHU (353)
2. Audio System Amplifier, front speakers, AMP1 (354F)
3. Audio System Amplifier, rear speakers, AMP2 (354R)
4. Control panel, infotainment, ICM (736)
5. SID (541)
6. Speakers, dashboard, left/right (266 FL/FR)
7. Speakers, rear, left/right (266 RL/RR)
8. Speaker, dashboard, center (266 FC)
9. Speakers, front door, left/right (266 LH/RH)
10. Speakers, woofer, rear, left/right (266 RLW/RRW)
11. Antenna (625)
12. Antenna amplifier, radio (624)
13. Antenna filter (644)
14. Steering wheel controls (633)
15. Column Integration Module, CIM (703)
16. Connection, AUX (771)

Scheme 100

1. Entertainment head unit, EHU (353)
2. Audio System Amplifier, front speakers, AMP1 (354F)
3. Audio System Amplifier, rear speakers, AMP2 (354R)
4. Control panel, infotainment, ICM (736)
5. SID (541)
6. Speakers, dashboard, left/right (266 FL/FR)
7. Speakers, rear, left/right (266 RL/RR)
8. Speaker, dashboard, center (266 FC)
9. Speakers, front door, left/right (266 LH/RH)
10. Speakers, woofer, rear (266 RCW)
11. Antenna (625 RL/RR)
12. Antenna amplifier, radio (624 RL/RR)
13. Steering wheel controls (633)
14. Column Integration Module, CIM (703)
15. Connection, AUX (771)

Scheme 101

1. Entertainment head unit, EHU (353)
2. Audio System Amplifier, front speakers, AMP1 (354F)
3. Audio System Amplifier, rear speakers, AMP2 (354R)
4. Control panel, infotainment, ICM (736)
5. SID (541)
6. Speakers, dashboard, left/right (266 FL/FR)
7. Speakers, rear, left/right (266 RL/RR)
8. Speaker, dashboard, center (266 FC)
9. Speakers, front door, left/right (266 LH/RH)
10. Speakers, woofer, rear, left/right (266 RLW/RRW)
11. Radio antenna (364)
12. Bypass unit, antenna amplifier (624a)
13. Antenna amplifier, radio (624b), (integrated in antenna base)
14. Steering wheel controls (633)
15. Column Integration Module, CIM (703)
16. Connection, AUX (771)

Infotainment Control Module

The control panel on the infotainment control module is used to select the functions of the infotainment system. There are three control modules: 1, 2 and 3. The type of control module depends on the equipment selected by the customer, for example

Scheme 102

Scheme 103

Scheme 104

1. ICM 1: most basic sound system and provisions for mobile phone. Audio system ON/OFF. Selection of audio system source. Volume Treble Bass Fader Balance Navigation in lists/menus under "Settings" in SID. Activation of "Settings" in SID.
2. ICM 2: higher level sound system and integrated phone. Audio system ON/OFF. Selection of audio system source. Volume Treble Bass Fader Balance Operating the menu display.
3. ICM 3: highest level sound system, integrated phone and navigation system. Audio system ON/OFF. Selection of audio system source. Volume Operating the menu display.

Data is transferred from the ICM to the EHU on the O-bus.

Steering Wheel Controls

Some models have steering wheel controls for selecting preset stations, tuning, volume control and source selection (radio or CD). The CIM converts the press of a button to a bus message that is received by the EHU, which carries out the instruction.

Scheme 105

Display

The entertainment unit uses the SID module and the control panel display for displaying the selected radio station or other player information such as the selected CD.

Scheme 106

Amplifiers and Speakers, 4D

The main entertainment unit has an integrated amplifier that drives the speakers of the Premium 70 sound system. The Premium 70 sound system has two speakers in the outer edges of the dashboard and two in the outer edges of the parcel shelf.

Scheme 107

The Premium 150 sound system has two additional speakers in the front doors and a center speaker in the dashboard. There is also an additional amplifier mounted under the left-hand seat.

Scheme 108

With the Prestige 300 sound system there are 4 additional speakers located in the parcel shelf, two tweeters and two bass, and two more tweeters on the dashboard. In order to drive the two bass speakers an amplifier is fitted in the boot on the left hand side.

Scheme 109

All speaker cables are twisted pairs. This makes them less sensitive to the induction of disturbances from other cables.

Amplifiers and Speakers, 5D

The main entertainment unit has an integrated amplifier that drives the speakers of the Premium 70 sound system. The Premium 70 sound system has 2 speakers in the outer edges of the dashboard and 2 in the outer edges of the luggage compartment.

Scheme 110

The Premium 150 sound system has two additional speakers in the front doors and a center speaker in the dashboard. There is also an additional amplifier mounted under the left-hand seat.

Scheme 111

For the Prestige 300 sound system, there are an additional two tweeters in the luggage compartment and one bass speaker under the luggage compartment floor. There are another two tweeters in the instrument panel. There is an amplifier mounted on the right-hand side of the luggage compartment to drive the bass speaker.

Scheme 112

All speaker cables are twisted pairs. This makes them less sensitive to the induction of disturbances from other cables.

Amplifiers and Speakers, CV

An amplifier for the speakers in the Premium 70 audio system is integrated in the EHU. The Premium 70 audio system includes 2 speakers in the outer edges of the dashboard and speakers in the right-hand and left-hand rear side trim.

Scheme 113

The Premium 150 audio system includes speakers in the doors and a center dashboard speaker. An amplifier for these speakers is fitted under the left-hand section of the rear seat.

Scheme 114

The Prestige 300 audio system includes 2 tweeters in the rear side trim and 2 woofers behind the rear seat backrest. Two additional tweeters are located in the dashboard. An amplifier for the woofers is fitted on the left-hand side of the luggage compartment.

Scheme 115

All speaker cables are twisted pairs. This makes them less sensitive to the induction of disturbances from other cables.

Antenna, 4D

The system has two antenna systems.

Antenna system 1 consists of one antenna for FM reception and one for AM reception. The FM antenna uses the rear window heating element while the AM antenna is a separate circuit at the top or the rear window. Both antennae are connected to an antenna amplifier located on the right-hand C-pillar. There is an antenna filter mounted on the ground side of the rear window heating element that removes interference when the rear window heating is on.

Scheme 116

Antenna system 2 includes a diversity function and additional antenna for FM reception. This FM antenna is integrated in the AM antenna. The antenna amplifier has an additional connection for FM reception. The amplifier uses the strongest FM signal and relays this to the EHU.

Scheme 117

Antenna, 5D

There are two different types of antenna system for the audio system

1. Antenna system 1 with an AM/FM antenna and an antenna amplifier.
2. Antenna system 2 with an AM/FM antenna, FM antenna and an antenna amplifier for each antenna.

The antenna for radio reception are integrated in the rear side windows and are located as follows

1. The AM/FM antenna is located in the rear right side window.
2. The FM antenna is located in the rear left side window.

The antenna amplifiers are located below the respective rear side windows and are available in three versions, one for antenna system 1 and two for antenna system 2.

The antenna signal is amplified in the antenna amplifier and fed via a coaxial cable to the main unit (radio). The amplifier is supplied with a trigger voltage from pin 13 (K8B) on the main unit and is grounded through the bolt screwing it to the body.

Scheme 118

Scheme 119

Antenna system 1 comprises

1. AM/FM antenna integrated in rear right side window.
2. AM/FM antenna amplifier, on right-hand side
3. coaxial cable between the antenna amplifier and the main unit (radio)

Scheme 120

Antenna system 2 comprises

1. AM/FM antenna integrated in rear right side window.
2. AM/FM antenna amplifier, on right-hand side
3. FM antenna integrated in rear left side window
4. FM antenna amplifier, on left-hand side
5. coaxial cable between FM amplifier on the left-hand side and AM/FM amplifier on the right-hand side.
6. coaxial cable between AM/FM amplifier and the main unit (radio)

Antenna system 2 has a diversity function which allows the radio receive to use the antenna that produces the best signal. The diversity function is available as an option.

Antenna, CV

The radio antenna (FM/AM) is located on the right-hand side of the soft top cover. An antenna amplifier (624b) in the antenna base transmits antenna signals to the EHU via the converting connector (624a) located at the right-hand A-pillar.

Sound Generator

The EHU also acts as a sound generator for various warning and information signals, even when the audio system is switched off. The EHU generates a tick-tock for the direction indicators, a chime to notify of messages on the SID or MIU, alarm for the trip computer, sound for the parking assist system and sounds for the key and seatbelt reminder and light and speed warnings.

Scheme 121

Option

A cabin CD player or CD changer can also be fitted with any of the infotainment systems.

The audio system has provisions for a phone. The Infotainment system and Infotainment System Plus are available with an integrated phone.

Connection, AUX

If the car is equipped with Saab Infotainment (ES2) or Saab Infotainment Plus (ES3), a portable unit such as an MP3 player can be connected to the audio system. The AUX connection is located in the center console beside the 12V socket. Volume can be adjusted from the control panel or steering wheel controls. The portable player controls can be used to change track, fast forward, etc.

Infotainment, Bus Information

INFOTAINMENT, BUS INFORMATION

Scheme 122

Main task

To receive radio waves in the AM and FM bands.

Type

Stick antenna with an antenna amplifier integrated in the base.

Connection

The antenna signal is amplified in the amplifier which is integrated in the antenna base. The antenna amplifier is energized and activated from the converting connector on the RH A-pillar. The amplified antenna signal is fed from the converting connector by coaxial cable to the radio.

To energize and activate the amplifier integrated in the antenna and to feed the amplified antenna signal to the radio.

Converting connector which joins together the antenna signal and power supply into one lead.

The converting connector energizes and activates the antenna amplifier. The amplified antenna signal is fed from the converting connector by coaxial cable to the radio.

Scheme 123

Main Purpose

AM and FM band radio reception.

Metal wire on rear window.

Scheme 124

The amplifier located in the right-hand C-pillar amplifies the antenna signal. The antenna amplifier is available in two versions depending on whether one or both of the rear window FM antennas are used. An antenna filter, which is located on the left-hand C-pillar, grounds the electrical heating coil but blocks the antenna signal from ground.

Scheme 125

1. AM antenna in a separate loop at the top of the rear window.
2. FM1 antenna in a common connection with the electric heating coil. In order that the antenna signal should not interfere with the heating coil power supply, the amplifier contains a filter that blocks the antenna signal. The heating coil ground side contains an antenna filter which blocks the antenna signal from ground.
3. The electrically heated rear window is connected to the antenna amplifier and filter. A capacitor prevents the voltage from reaching the antenna amplifier. The electrically heated rear window is grounded through the antenna filter.

The amplified antenna signal is supplied to the radio via the coaxial cable.

Scheme 126

1. AM antenna in a separate loop at the top of the rear window.
2. FM1 antenna in a common connection with the electric heating coil. In order that the antenna signal should not interfere with the heating coil power supply, the amplifier contains a filter that blocks the antenna signal. The heating coil ground side contains an antenna filter which blocks the antenna signal from ground.
3. FM2 antenna connected to the same connector as the AM antenna on the rear window. It is connected to a loop across the AM antenna and to the electric heating element.
4. The electrically heated rear window is connected to the antenna amplifier and filter. A capacitor prevents the voltage from reaching the antenna amplifier. The electrically heated rear window is grounded through the antenna filter.

AM and FM band radio reception.

Metal wire on side window.

Scheme 127

Scheme 128

The antennas for radio reception are integrated in the rear side windows. The AM/FM antenna is located in the rear right side window and the FM antenna in the rear left side window. To amplify the antenna signal, one or two antenna amplifiers are fitted to transmit the amplified antenna signal to the main radio unit.

Scheme 129

To convert electric impulses to sound from the audio system in the car.

Tweeter

Scheme 130

Mid-range speaker

Scheme 131

Scheme 132

Bass speaker

Scheme 133

Woofer

Scheme 134

The car has three different equipment levels

Speakers, Premium 70

Speakers, Premium 150

Speakers, Prestige 300

Connection

Speaker connection

+ to pin 2

to pin 1

Subwoofer connection

right channel: - to pin 1, + to pin 2

left channel: - to pin 3, + to pin 4

connection 266FC

Scheme 135

connection 266FL

Scheme 136

connection 266FR

Scheme 137

Wiring diagram, connection 266LH

Scheme 138

Wiring diagram, connection 266RH

Scheme 139

Wiring diagram, connection 266RCW

Scheme 140

Wiring diagram, connection 266RL

Scheme 141

Wiring diagram, connection 266RLW

Scheme 142

Wiring diagram, connection 266RR

Scheme 143

Wiring diagram, connection 266RRW

Scheme 144

1. Main unit of the Infotainment system.
2. Radio receiver
3. Amplifier to Premium 50 audio system.
4. Receiver of signals from media, acoustic warning and telephone as well as playback media for such.

Radio unit with AM/FM and amplifier. Infotainment head units are SPS reprogrammable.

CONNECTION REFERENCE

Scheme 145

Wiring diagram, power supply

Scheme 146

Amplify and distribute sound to the front door speakers and the center speaker on the dashboard.

Control module to supply output to the speaker.

Scheme 147

CONNECTION REFERENCE

Scheme 148

Wiring diagram, power supply

Scheme 149

Amplify and distribute sound to the bass speaker.

Control module to supply output to the speaker.

Scheme 150

CONNECTION REFERENCE

Scheme 151

Wiring diagram, power supply

Scheme 152

Playing CDs with music or speech.

CD player that decodes and transmits the sound recorded on the CD to the infotainment head unit via light impulses over the O-bus. The CD player is SPS reprogrammable.

Scheme 153

CONNECTION REFERENCE

Scheme 154

Wiring diagram, power supply

Scheme 155

Player for 6 CDs with music or speech.

The CD player and 6 CD changer decodes and transmits the recorded sound on the CDs in the form of light impulses via the O-bus to the EHU. The rear CD changer is SPS reprogrammable.

Scheme 156

CONNECTION REFERENCE

Amplify the antenna signal from the rear window antenna.

Output amplifier to strengthen a weak incoming antenna signal to a stronger signal that the infotainment head unit can use.

Scheme 157

The antenna amplifier is supplied trigger voltage from pin 13 of the infotainment head unit and is grounded by being secured to the chassis. The strengthened antenna signal is taken out and fed to the infotainment head unit via a coaxial cable.

Scheme 158

Scheme 159

Amplify the antenna signal from the rear window antenna. The Diversity amplifier sends on the strongest FM signal.

Output amplifier to strengthen a weak incoming antenna signal to a stronger signal that the infotainment head unit can use. The antenna amplifier has a switch function that together with the radio selects the best FM signal from FM 1 or FM 2.

The antenna amplifier is supplied trigger voltage from pin 13 of the infotainment head unit and is grounded by being secured to the chassis. The strengthened antenna signal is taken out and fed to the antenna connection on the infotainment head unit via a coaxial cable.

Scheme 160

Scheme 161

Amplify the antenna signal from the antenna on the rear right side window.

Output amplifier to strengthen a weak incoming antenna signal to a stronger signal that the infotainment head unit can use.

Scheme 162

The antenna signal is supplied with a trigger voltage from pin 13 (K8B) on the main radio unit and is grounded through the bolt screwing it to the body. The amplified antenna signal is fed via a coaxial cable to the main radio unit.

Scheme 163

Scheme 164

Amplified antenna signals from antennas.

Output amplifier to strengthen a weak incoming antenna signal to a stronger signal that the infotainment head unit can use. There are two antenna amplifiers, one on each side of the car. The left-hand antenna amplifier is an FM antenna amplifier only. In the right-hand antenna amplifier, for both FM and AM, there is a switching function that works together with the radio to choose the best FM signal from FM 1 (right-hand antenna) or FM2 (left-hand antenna).

Scheme 165

The FM/AM antenna amplifier (624RR) on the right-hand side is supplied with a trigger voltage from pin 13 (K8B) on the main radio unit and is grounded through the bolt screwing it to the body.

The FM antenna amplifier (624RL) on the left-hand side is supplied via a coaxial cable from the FM/AM antenna amplifier (624RR) and is grounded through the bolt screwing it to the body. The coaxial cable is also used for the antenna signal from the left-hand antenna amplifier (624RL) to the right-hand antenna amplifier (624RR).

The antenna system 2 has a diversity function, which means the FM/AM antenna amplifier (624RR) on the right-hand side selects the best antenna signal.

The amplified antenna signal is fed via a coaxial cable to the antenna connector on the main radio unit.

Scheme 166

Scheme 167

Main use

Operation of audio and telephone systems, changing up and down on automatic transmissions and horn switch.

The steering wheel buttons are resistive multiplexed (5V) and divided into 2 circuits; Sentronic/horn in one circuit and other buttons in the second. The 2 circuits have a common ground from CIM. Each circuit has an extra resistor for diagnosing a break in the circuit.

The lead for the Sentronic/horn is fed with 5V via a 560ohms resistor integrated in CIM. When the horn switch closes, the line is grounded and the voltage drops to 0V. For changing up and down respectively there are 2 switches and 2 resistors: one for up and one for down changes. Depending on the switch being pressed, the total resistance will change and therefore also the voltage.

The buttons have integrated LEDs so that the symbols can be seen in the dark. The LEDs are powered by the CIM. All the leads go via a coil spring to CIM. CIM sends the status of the horn and the other buttons on the bus.

Scheme 168

Activation

The CIM (column integration module) powers the button unit with 5 volts: for audio and telephone on pin 1 and for Sentronic/horn on pin 4. A common ground goes to pin 2. Depending on the switch being pressed, the total resistance will change and therefore also the voltage.

Pin 3 receives a 12 volt PWM signal to control the brightness of the LEDs.

PINS REFERENCE

Scheme 169

Wiring diagram, power supply

Scheme 170

The antenna filter grounds the electrical heating coil and isolates the antenna signal from ground in order to avoid picking up interference signals.

Coil type antenna filter which isolates in one direction.

Connected between the rear window heating and ground.

Scheme 171

The electrical center for most of the operations in the compartment and dashboard.

BCM control module 707 is located in the electrical center

Electrical center with relays, maxi and micro-fuses.

Connect

The 16 pin connector from the BCM 707 control module is connected directly to the electrical center.

The electrical center is fed with +30 voltage from the engine bay electrical center 342 and is connected to the dashboard harness via a 42 pin connector.

Scheme 172

The following current circuits are distributed by the electrical center: For additional relay information, see BUZZERS, RELAYS & TIMERS .

1. Power supply +30, dashboard's electrical center
2. Power supply +15, dashboard's electrical center
3. Power supply +54, dashboard electrical center

Scheme 173

The electrical center can contain a greater number of fuses than those listed below. In such cases, these are not connected to a wiring harness. For additional fuse information, see CIRCUIT PROTECTION DEVICES and POWER DISTRIBUTION .

FUSES REFERENCE

Scheme 174

The electrical center can contain a greater number of relays than those listed below. In such cases, these are not connected to a wiring harness. For additional relay information, see BUZZERS, RELAYS & TIMERS .

RELAYS REFERENCE Location No. Description Graphic Diagram R1 21 Relay, +54 - R2 757C Relay, +15, IPEC - R3 - - - - R4 - - - - R5 - - - - R6 756 Relay, accessories - R7 - - - - Soldered circuit board 717 Interior lighting relay INTERIOR LIGHTING AND READING LAMPS, 4D/5D INTERIOR LIGHTING AND READING LAMPS CV

Scheme 175

Scheme 176

Scheme 177

Scheme 178

List of Components

LIST OF COMPONENTS

Scheme 179

LIST OF COMPONENTS

Center Dashboard Speaker (266FC)

Location: top center of dashboard

Scheme 180

Left Dashboard Speaker (266FL)

Location: to the left in dashboard

Scheme 181

Right Dashboard Speaker (266FR)

Location: to the right in dashboard

Scheme 182

Front Left Door Speaker (266LH)

Location: in the door

SOP - Rev.1

Scheme 183

From and including Rev.1

Scheme 184

Subwoofer (266RCW)

Location: in spare wheel well

Scheme 185

Front Right Door Speaker (266RH)

Location: in the door

SOP - Rev.1

Scheme 186

From and including Rev.1

Scheme 187

Speaker, Rear, RH (266RR)

Location: to the right in the parcel shelf

4D

Scheme 188

5D

Scheme 189

CV

Scheme 190

Speaker, Woofer, Rear, LH (266RLW)

Location: to the left in the parcel shelf

4D

Scheme 191

CV

Scheme 192

Speaker, Rear, LH (266RL)

Location: to the left in the parcel shelf

4D

Scheme 193

5D

Scheme 194

CV

Scheme 195

Speaker, Woofer, Rear, RH (266RRW)

Location: to the right in the parcel shelf

4D

Scheme 196

CV

Scheme 197

Steering Wheel Contact Unit (336)

Location: integrated in steering column unit

Connection from the steering wheel wiring harness

Scheme 198

Connection from the instrument wiring harness

Scheme 199

Steering Wheel Contact Unit, Horn/Switches (336b)

Location: integrated in steering column unit

Scheme 200

Act as the electrical center for the front of the car and handle some parts of the logic for the front lighting as well as the visibility and signal systems.

Distributes current from the battery to the other electrical centers.

The electrical center contains the transport fuse (fuse 37).

Electrical center with relays, maxi and micro-fuses and integrated control module for logic operations.

The fuse box is connected to the battery and to grounding points G30A, G31 and G33S. The electrical center is connected via three switches in its base to the engine harness, front harness and main harness. For additional information, see BUZZERS, RELAYS & TIMERS .

Power supply circuit for +30

Power supply circuit for +15

Scheme 201

Scheme 202

Scheme 203

Scheme 204

The electrical center can contain a greater number of fuses than those listed below. In such cases, these are not connected to a wiring harness. For additional fuse information, see CIRCUIT PROTECTION DEVICES and POWER DISTRIBUTION .

FUSES REFERENCE No. Amp Type Function Graphic 1 30 +30 Z18XE (Simtec) via main relay 229: Control module, Simtec (705) Heated oxygen sensors (271) EVAP canister purge valve (321) Control valve, VIM damper (454) Module, mass air flow sensor (686) Z19 (EDC16) via main relay 229: ECD16 control module (595B) Glow plug control module (596) Boost pressure control valve (179a) Heating element, oxygen sensor (271) Actuator, swirl throttle (403) Actuator, throttle body (604) Solenoid valve, EGR (606) - 2 10 +30 TCM (502a/b) Trionic T8 control module (589A) Control module, ME9 (608B) Simtec control module (705B) - 3 20 +30 Horn - 4 10 +15 TCM, AF 40 (502b) Battery disconnect switch (700) B207 (T8): Trionic T8 control module (589A) Z18XE (Simtec): Simtec control module (705B) Module, ignition coils (552) Module, power steering unit (745) B284 (ME9): Control module, ME9, switch B (608B) Mass air flow sensor (205) Z19 (EDC16): ECD16 control module (595B) Module, mass air flow sensor (686) Water level sensor, fuel filter (692) Module, power steering unit (745) - 5 - - - - 6 10 +30 TCM, FA 57 (502a) Immobilizer switch, automatic (77) Gear selector, automatic (245) Immobilizer switch (411) - 7 - - - 8 5 +15 Vacuum pump unit (459) - 9 - - - - 10 - - - - 11 - - - - 12 - - Washer fluid pump, rear window (63c) - 13 10 +30 EDC16 and Simtec: A/C compressor (170) - 14 - - - - 15 30 +30 Motor, high-pressure headlight washer pump (668) - 16 30 - Lighting, left front: Side direction indicators, dipped beam, fog light Lighting, right front: Position lamp, direction indicator, side direction indicator, main beam - 17 30 - Windscreen wiper motor, low-speed - 18 30 - Windscreen wiper motor, high-speed - 19 20 +30 Parking heater, diesel (597) Connection, accessories (711) - 20 10 +15 Motors, manual headlamp levelling (280) AHL control module (664) - 21 - - - - 22 30 +30 Washer fluid pump, windscreen (63b) - 23 - - - - 24 20 +30 Auxiliary lamp - 25 20 +30 Front amplifier (354F) - 26 30 +30 Lighting, left front: direction indicator, position lamp, main beam Lighting, right front: dipped beam, fog light - 27 60 +30 B207 (T8): - - maxi - Main fuse for fuse box 727 - - 20 - Z18XE and Z19 (Simtec and EDC16): - - maxi - fuel pump (323) - 28 40 maxi +30 Control module, TCS/ESP (382/671) - 29 60 maxi +30 Main fuse 2 for rear electrical center - 30 60 maxi +30 Main fuse 2 for dashboard electrical center - 31 40 maxi +30 Starter motor solenoid via relay 517 - 32 60 maxi +30 Main fuse 1 for dashboard electrical center - 33 40 maxi +30 Control module, TCS/ESP (382/671) - 34 60 maxi +30 Main fuse 1 for rear electrical center - 35 30 +30 B207 and Z18XE: Radiator fan - - maxi - B248: Vacuum pump unit - 36 20 +30 B207: Radiator fan - - maxi - EDC16: Heating element, fuel filter - 37 60 maxi +30 Transport lock. Main fuse 3 for rear electrical center

Scheme 205

Relays

The electrical center can contain a greater number of relays than those listed below. In such cases, these are not connected to a wiring harness. For additional relay information, see BUZZERS, RELAYS & TIMERS .

RELAYS REFERENCE Location No. Description Graphic Diagram R1 432b Relay, washer fluid pump, windscreen - R2 156 Relay, A/C compressor (Simtec and EDC16) Simtec (Air conditioning A/C, B207/Z18XE) EDC16 (Air conditioning A/C, diesel) R3 - - - - R4 641 Relay, diesel preheating - R5 675 Relay, extra lights - - R6 68 Horn relay - R7 229 Main relay, engine management system (Simtec and EDC16) - R8 517 Relay, +50 STARTING SYSTEM, B207 STARTING SYSTEM, Z18XE STARTING SYSTEM, B284 STARTING SYSTEM, Z19 R9 83 Windscreen wiper relay - R10 432c Relay, washer fluid pump, rear window - R11 757F Relay, +15, UEC - R12 709 Relay, windscreen wiper, full/half speed - R13 - - - - R14 667 Relay, washer fluid pump, high-pressure, headlamp - R15 - - - - R16

Scheme 206

Scheme 207

Scheme 208

Scheme 209

Scheme 210

Scheme 211

Scheme 212

Scheme 213

Scheme 214

Scheme 215

LIST OF COMPONENTS

Entertainment Head Unit (353)

Location: in center console

K8A

Scheme 216

K8B

Scheme 217

K12

Scheme 218

O-bus

Scheme 219

Amplifier, Front Speakers (354F)

Location: under the LH seat

4D/5D

Scheme 220

CV

Scheme 221

4D/CV

Location: behind left rear wheel housing

Scheme 222

5D

Location: behind right rear wheel housing

Scheme 223

Front CD Player/Changer (355F)

Location: lowest in the center of the dashboard

Scheme 224

CD Changer, Rear (355R)

Location: in the luggage compartment

Scheme 225

Connection, Mobile Phone (375)

Location: by EHU

Scheme 226

Antenna Amplifier, Radio (624)

Location: by rear window on RH C-pillar

Scheme 227

Converting Connector, Radio Antenna (624a)

Location: under RH A-pillar

Scheme 228

Antenna Amplifier, Radio, CV (624b)

Location: in the antenna base

Scheme 229

Radio Antenna Amplifier, 5D (624RL)

Location: under left rear side window

Scheme 230

Radio Antenna Amplifier, 5D (624RR)

Location: under right rear side window

Scheme 231

Scheme 232

Scheme 233

Scheme 234

Switch Unit, Steering Wheel (633)

Location: On the steering wheel rim

Scheme 235

Filter, Antenna Ground (644)

Location: on ground cable between LH side of rear window and grounding point

Scheme 236

Act as the electrical center for the rear of the car and the roof, and perform certain logic functions such as for the rear lighting.

Electrical center with relays, Maxi and micro fuses and an integrated control module for logic functions. Wiring for a trailer connector is connected to the electrical center.

Scheme 237

The electrical center is fed with a +30 supply from the engine bay electrical center (342) and grounded to grounding points G3 and G29. The electrical center is connected to the wiring harness via 7 connectors

Scheme 238

Scheme 239

Scheme 240

Scheme 241

Scheme 242

Scheme 243

Scheme 244

Scheme 245

Scheme 246

Scheme 247

Scheme 248

Scheme 249

1. Body 1 (in diagram = B1) to main wiring harness
2. Body 2 (in diagram = B2) to main wiring harness
3. Body 3 (in diagram = B3) to main wiring harness
4. Head 1 (in diagram = H1) 4D to roof harness 5D to roof harness
5. Head 2 (in diagram = H2) 4D to roof harness 5D to roof harness CV to main wiring harness
6. Rear (in diagram = R) to rear wiring harness
7. Tail (in diagram - T) to: 4D: parcel shelf harness 5D: rear harness CV: rear harness The connectors for the main, parcel shelf and rear wiring harnesses each comprise four connectors, which are named A, B, C and D in the wiring diagrams, for example B1-B. The TR-WH connector is used for a trailer connector. In some cases a special module, TR-MOD, is required. The electrical center contains the following power circuits: For additional information, see «BUZZERS, RELAYS & TIMERS»(ref-244443-S39553965642006092300000) . +30 power supply, rear electrical center +15 power supply, rear electrical center

Fuses

The electrical center can contain a greater number of fuses than those listed below. In such cases, these are not connected to a wiring harness. For additional fuse information, see CIRCUIT PROTECTION DEVICES and POWER DISTRIBUTION .

FUSES REFERENCE

Scheme 250

The electrical center can contain a greater number of relays than those listed below. In such cases, these are not connected to a wiring harness. For additional relay information, see BUZZERS, RELAYS & TIMERS

RELAYS REFERENCE Location No. Description Graphic Diagram R1 446 Electrically adjustable seat relay LH RH R2 757R Relay, +15, REC - R3 - - - - R4 113 Electrically heated rear window relay - R5 83a Rear window wiper relay - R6 - - - - R7 710 Boot lid opening motor relay - R8 - - - - R9 - - - - R10 - - - - R11

Scheme 251

Scheme 252

Scheme 253

Scheme 254

Scheme 255

LIST OF COMPONENTS

Scheme 256

LIST OF COMPONENTS

Connection, AUX (771)

Location: in the center console

Scheme 257

Connector H8-1

Location: grey connector on the parcel shelf by the left C-pillar

Scheme 258

Connector H8-3

Location: in the door

SOP - Rev.1

Scheme 259

From and including Rev.1

Scheme 260

Connector H8-10

Location: on side under right-hand D-pillar closest to side window.

Scheme 261

Connector H8-17

Location: under the right A-pillar

Scheme 262

Connector H10-7

Location: in the torsion box

Scheme 263

Connector H13-1

Location: In the end of the LH front door

Scheme 264

Connector H13-2

Location: In the end of the RH front door

Scheme 265

Connector H33-1

Location: black connector on the console to the left of the ignition switch

Scheme 266

Connector H102-1

Location: Under the LH A-pillar

Scheme 267

LIST OF COMPONENTS

LIST OF COMPONENTS

CRIMP J108, MAIN WIRING HARNESS

LIST OF COMPONENTS

Scheme 268

Location: By seat member under left-hand seat

Connected Components

CONNECTED COMPONENTS REFERENCE

Scheme 269

Scheme 270

Location: In the instrument space to the right of the knee member

CONNECTED COMPONENTS REFERENCE

Scheme 271

Scheme 272

Location: On right-hand side of knee member

The grounding point is connected with grounding point G34S via crimps J80 and J108.

CONNECTED COMPONENTS REFERENCE

Scheme 273

Crimp J80

Scheme 274

Scheme 275

Location: In steering wheel

The grounding point is connected to grounding point G47B

CONNECTED COMPONENTS REFERENCE

Scheme 276

Location: In steering wheel

The grounding point is connected to grounding point G47A

CONNECTED COMPONENTS REFERENCE

Scheme 277

Location: In the C pillar by the LH side of the rear window.

CONNECTED COMPONENTS REFERENCE

Scheme 278

Scheme 279

SPEAKER SPECIFICATIONS (PREMIUM 70)

Scheme 280

SPEAKER SPECIFICATIONS (PREMIUM 150)

Speakers, Prestige 300

5D

Scheme 281

SPEAKER SPECIFICATIONS (PRESTIGE 300)

AMPLIFIER SPECIFICATIONS (FRONT SPEAKER)

Amplifier, Rear Speakers (354R)

AMPLIFIER SPECIFICATIONS (REAR SPEAKER)

CD Player/Changer, Front

CD PLAYER/CHANGER SPECIFICATIONS (FRONT)

Scheme 282

ENTERTAINMENT HEAD UNIT SPECIFICATIONS

Antenna Amplifier, Radio (624), 4D

ANTENNA AMPLIFIER SPECIFICATIONS - 4D

Antenna Amplifier, Radio (624 RL/RR), 5D

Antenna amplifier with diversity (624 RL/RR)

Antenna amplifier without diversity (624RR)

ANTENNA AMPLIFIER SPECIFICATIONS - 5D

Bypass Unit, Antenna Amplifier (624a), CV

BYPASS UNIT SPECIFICATIONS (CV)

Radio Antenna (364), CV

RADIO ANTENNA SPECIFICATIONS (CV)

Scheme 283

Scheme 284

The following contains readings and instructions for measuring signals and levels on the head unit and its control module.

Remember

1. Note the test conditions and use common sense when assessing test results.
2. First check that the control module has a power supply and is grounded.
3. Then check all sensor inputs and signals from other systems.
4. Lastly, check the control module outputs. Remember, the readings do not say anything about whether or not the actuator is in working order.
5. If any reading is not OK, consult the wiring diagram to trace the leads, connectors or components which should be checked more thoroughly.
6. The specified test readings refer to those obtained with a calibrated Fluke 88/97.
7. Test readings %(+) and ms(+) show the signal's pulse ratio and pulse width. A test instrument with pulse ratio and pulse width measurement must be used. The sign (+) indicates a positive trigger pulse, TRIG+.

Scheme 285

K8A

CONTROL MODULE CONNECTIONS REFERENCE - K8A

Scheme 286

K8B

CONTROL MODULE CONNECTIONS REFERENCE - K8B

Scheme 287

O-Bus

CONTROL MODULE CONNECTIONS REFERENCE - O-BUS

Scheme 288

K12

CONTROL MODULE CONNECTIONS REFERENCE - K12

Scope

The following contains readings and instructions for measuring signals and levels on the head unit and its control module.

1. Note the test conditions and use common sense when assessing test results.
2. First check that the control module has a power supply and is grounded.
3. Then check all sensor inputs and signals from other systems.
4. Lastly, check the control module outputs. Remember, the readings do not say anything about whether or not the actuator is in working order.
5. If any reading is not OK, consult the wiring diagram to trace the leads, connectors or components which should be checked more thoroughly.
6. The specified test readings refer to those obtained with a calibrated Fluke 88/97.
7. Test readings %(+) and ms(+) show the signal's pulse ratio and pulse width. A test instrument with pulse ratio and pulse width measurement must be used. The sign (+) indicates a positive trigger pulse, TRIG+.

Scheme 289

AMP 1

CONTROL MODULE CONNECTIONS REFERENCE - AMP 1

Scheme 290

AMP 2

CONTROL MODULE CONNECTIONS REFERENCE - AMP 2

Scheme 291

Group: Test equipment

TECH 2 REFERENCE

Scheme 292

OPTICAL FIBER TEST CABLE REFERENCE

Scheme 293

Group: Body

REMOVAL TOOL REFERENCE

Scheme 294

Group: Audio System

REMOVAL TOOL REFERENCE

General

The demands on the car's functionality have developed strongly during the last years. Development has primarily affected the car's electrical system. From Saab 900 1994 when the instrument bus with 4 control modules via Saab 9-5 and 9-3 with the Infotainment bus and the Power train bus and 13 control modules on to the Saab 9-3 Sport Saloon with at most 30 control modules.

In addition to the I-bus and the P-bus, an Optical bus was introduced on the Saab 9-3 Sport Saloon, which interconnects the car's infotainment system. Furthermore, an electrically controlled steering column lock was introduced. Initially it will be possible to SPS program 8 of the car's control modules. Most of the car's control modules have a flash memory and will be successively included in SPS.

Bus

Bus configuration can be read and reset as before. An addition is that, besides "Missing" and "OK", "Added" is also shown if a unit has been fitted without resetting the bus list. Furthermore, "Not fitted" is shown for control modules that are not mounted and should not be mounted in the car. The bus list is divided into four pages, two for the I-bus, one for the P-bus and one for the O-bus.

With an "Add/Remove" of a control module updating of the list takes place automatically. In connection with the trouble code reading a check is made on the buses in accordance with the previous concept. Further tools have been introduced for fault diagnosis of the buses. A fault counter in each control module can be read and reset using the diagnostic tool. The counter's value increases with short term breaks to the control module in question.

Scheme 295

A suitable instrument to use is a multimeter.

The ohmmeter must not be used to test components containing semi-conductors, e.g. control modules and relay with timing functions, etc.

When measuring resistance, the power supply to the system being tested must be disconnected as the measuring instrument generates a weak current in the circuit in question.

This is done to ensure that there is no current already in the tested circuit and that the correct reading is obtained.

Scheme 296

Scheme 297

1. Turn on the load.
2. Set the multimeter for measuring voltage and connect the negative lead of the voltmeter to a good grounding point.
3. Connect the positive lead of the voltmeter to the point where the voltage is to be read.
4. On the output side of switches/control modules, it is better to start checking from these and gradually work your way towards the load. When there is no longer a voltage reading, you will have gone past the break point.
5. On the input side of switches/control modules/consumers, it is better to start at the power source (normally a fuse) and then move gradually towards the switch/control module/consumer. When there is no longer a voltage reading, you will have gone past the break point.

Scheme 298

Scheme 299

1. Make sure the component or lead to be tested is not under tension (e.g. by removing the relevant fuse).
2. Set the multimeter for measuring ohms and connect the ohmmeter to each end of the component/lead to be tested.
3. Jiggle the relevant wiring harness while observing the ohmmeter. Normally, the resistance of a wiring harness is less than 1 ohm. Specified values apply to components.

Scheme 300

Scheme 301

1. Make sure the lead being tested is not under tension (e.g. remove the relevant fuse) and that any loads are disconnected.
2. Set the multimeter for measuring ohms.
3. Connect one test lead to a good ground and the other to the point to be tested.
4. Carefully jiggle the wiring harness and make sure the multimeter reading shows infinite resistance (OL) all the time.

Control module

When the control module is supplied with current, the processor in it is tripped. The processor then reads the instructions stored in the control module's memory.

The control module is programmed to read the inputs and activate the outputs. If the control module program is faulty, the diagnostic trouble code "Internal Control Module Fault" will be generated.

The control module must be supplied with current before the system will function. The control module is supplied with current and the processor tripped when the control module can be contacted by the diagnostics instrument.

Outputs

The purpose of the system is to control a number of functions by means of various actuators, such as an injector or lamp. For the system to be capable of performing its functions, it must be possible to activate the actuators. For this reason the actuators must be connected to the control module and have a proper power supply or ground connection.

The performance of the majority of the actuators can be checked with the diagnostics instrument.

Inputs

A condition for the control module's capability of controlling its actuators is that the system's sensors supply it with correct values.

Sensor performance can be checked with the diagnostics instrument.

Scheme 302

The control module is sensitive to electrostatic discharges. In order to prevent damage to internal components in control modules, they must be changed very carefully in the following manner

1. Never touch the pins on a control module with your hands or clothes.
2. Ground yourself by touching the car body/engine. Unplug the connector on the car's control module.
3. Ground yourself by touching the car body/engine. Plug-in the connector on the car's control module.

The Action Involves the Following

Security codes will be reset, bus lists updated, data in other control modules updated and data that may have to be written into a new control module read and displayed.

SPS Programming

Connect Saab Tech2 and use TIS 2000 to check whether the control module requires programming. Go to the "SPS" menu, select "Read control module data" and follow the instructions. This is done so that the control module receives the latest available software and is also adapted to the car variant and market.

Add

Once the control module has been fitted and in certain cases SPS programming has been carried out, Tech2 must be used to marry the control unit to the car. Go to the "All" menu and select the control module under "Add/Remove". Then select "Add" and follow the instructions. The ignition key must be in ON position. TIS 2000 may be required.

Properties files are downloaded, security codes are written, bus lists are updated, data in another control modules are updated and fault codes cleared in all control modules.

Actions When Replacing Electrical Components

The components are sensitive to electrostatic discharges. In order to avoid damage to the internal circuits of components, replacement must be carried out with care in the following manner

1. Never touch the pins of the component with the hands or with clothing.
2. Ground yourself by touching the engine or body of the car. Unplug the connector from the component.
3. Ground yourself by touching the engine or body of the car. Plug in the connector to the component.

Internal Control Module Faults

Upon starting, the processor (CPU) checks that the check sum is the right one for the ROM. This value is written to the RAM and then read back again to check that the value is the same as the original one.

During operation, a check is carried out to ensure that the program executes certain routines.

See DIAGNOSTIC TROUBLE CODE P0601 for Trionic 8 by way of example.

1. The ROM has to be correct as the program is stored there. An error in the program could cause the control module to activate an output in the wrong position or make entirely wrong decisions. The check sum is the sum of the program's entire code and is attached when the control module is programmed. When the control module processor is woken, the entire program will be checked again. The check sum just calculated is compared with the programmed one, and these must be the same, otherwise diagnostic trouble code P0605 is generated.
2. All bytes in the RAM are checked in connection with startup. One byte equals 8 bits, and the process writes 4 different bit patterns and reads them back. The values written and read must be the same. 4 different bit patterns are used because we want to be sure that bits do not infect one another. The «ERROR DETECTED EXAMPLES IN BYTE IN RAM»(ref-275865-S01951319452007122900000) shows an example of how an error is detected in a byte in the RAM: ERROR DETECTED EXAMPLES IN BYTE IN RAM Written Read Error (Yes/No) 00000000 00000000 No 11111111 11111111 No 01010101 01010101 No 10101010 10101011 Yes The error is that the second-last bit is infecting the last one with a one. This generates diagnostic trouble code P0604.
3. "Dog Error" is short for "Watchdog Error". A check is carried out to ensure that the program passes certain program steps which are always run.

Analog Inputs

The voltage interval 0-5 V from a temperature sensor or pressure sensor is converted in the control module into a digital value, often 0-255 (256 steps), which is equivalent to a byte.

If we know that the bit value is never less than 10 or more than 245 under normal operation, we can set a diagnostic trouble code if the value falls outside of this range.

In the example above, you can see that the diagnosis is unable to differentiate between interference and a short-circuit to 5 V. The reason for this is that the input has a Pull-Up at 5 V, and this is equivalent to a bit value of 255. This is the greatest value the control module can read. Thus interference generates the same diagnostic trouble code as a short-circuit to 5 V or B+.

The A/D value has to be too high for 0.5 s in order to set the diagnostic trouble code. This is known as the filter time. The filter has to be in place to prevent short-term interference from mobile telephones or the ignition system, for example, from setting diagnostic trouble codes.

The diagnostic trouble code is set after 0.5 s. The MIL (Malfunction Indicator Lamp) or Check Engine, as it is also known, is activated only during the second run in a row where faults have occurred. If the fault is rectified without deleting the diagnostic trouble code, Check Engine will go out after the third fault-free run.

The control module uses a substitute value for coolant temperature which is based on the intake air temperature.

As long as the fault is active, a bus message is sent indicating that the cooling temperature value is implausible. This means that the receiving control module is able to undertake certain action, such as starting the radiator fan and resetting the temperature gauge.

Digital Inputs

The camshaft and crankshaft sensor and a door switch are examples of digital inputs. These are more difficult to diagnose. In the case of the camshaft and crankshaft sensor, it may be concluded that there is a fault in the camshaft sensor if only the crankshaft sensor is transmitting signals (Motronic).

Buttons and many other digital inputs are often entirely without diagnostics.

You can see that simply switching on the ignition is not enough for the diagnostics to locate the fault. The crankshaft has to be rotating. If the camshaft is not rotating, the diagnostic trouble code will be set after 12 engine revolutions. If the fault is present from startup and the motor is unable to start without the sensor, it is necessary to turn the engine over on the starter motor before the code is set (e.g. Motronic).

If the cam chain snaps, the diagnostic trouble code will be set. The control module is unable to tell whether the camshaft sensor has stopped transmitting signals because of a mechanical fault or an electrical fault.

When at rest, when a last-stage transistor is not activated, the voltage between collector and emitter must be high (often battery voltage). When the transistor is active, the voltage must be low.

Otherwise a diagnostic trouble code is set.

Here, the control module first has to have learned that the car is fitted with A/C. This is saved to the RAM. Cars without A/C must not have this diagnostic trouble code stored, although they do not have an A/C relay.

For a diagnostic trouble code regarding interference to be set, the output must be deactivated. The correct voltage for an active output is 0 V.

If the voltage is too high in the case of an active output, a diagnostic trouble code for a short-circuit to B+ is set. This could be due to a burnt relay winding, a short-circuit in the network or made an incorrect connection in the relay base during troubleshooting.

"Warm-up" is short for the Warm-Up Cycle and is described in US legal requirements. A warm-up involves raising the engine temperature by 20°C, and the temperature also has to be in excess of 71°C. If the fault is rectified without deleting the diagnostic trouble code, the diagnostic trouble code will remain in the control module fault memory for 40 warm-ups.

Conditions

No DTCs stored with the fault symptom in question.

Ignition ON.

Speed dependent volume control selected.

No DTCs stored with the fault symptom in question.

No buttons have stuck on the ICM.

No DTCs stored with the fault symptom in question.

No DTCs stored with the fault symptom in question.

No DTCs stored with the fault symptom in question.

No DTCs stored with the fault symptom in question.

No DTCs stored with the fault symptom in question.

No DTCs stored with the fault symptom in question.

No customer complaint regarding SID.

No DTCs stored with the fault symptom in question.

Ignition ON.

Radio on

No DTCs stored with the fault symptom in question.

The control module can be contacted with the diagnostic tool.

No faults on O-bus.

Scheme 303

No DTCs stored with the fault symptom in question.

No customer complaint regarding SID.

No DTCs stored with the fault symptom in question.

For additional information, see ELECTRICAL COMPONENT LOCATOR

LIST OF COMPONENTS No. Name Location Graphic - Components - 22 Main fuse box, dashboard, on the short side of the dashboard by the left door 14 266FL Left dashboard speaker, to the left in dashboard 266FR Right dashboard speaker, to the right in dashboard 266RL Speaker, rear, LH, 4D: to the left in the parcel shelf 5D: to the left in the tailgate CV: within the rear seat LH side trim 266RR Speaker, rear, RH, 4D: to the right in the parcel shelf 5D: to the right in the tailgate CV: within the rear seat RH side trim 336b Steering wheel contact unit, horn/switches integrated in steering column unit 353 Main radio unit, in the center console 364 Antenna, radio, on the RH side of the soft top cover - 375 Connection, mobile phone, by the radio unit 624 Radio antenna amplifier, by the rear window on the right C-pillar 624a Converting connector, radio antenna, below the left A-pillar 624b Radio antenna amplifier, in the antenna base 624RL Radio antenna amplifier, under the left rear side window - 624RR Radio antenna amplifier, under right rear side window - 625 Antenna, radio, window, in rear window 625RL Antenna, radio, window, in left rear side window 625RR Antenna, radio, window, in right rear side window 633 Steering wheel controls, on steering wheel rim 644 Antenna ground filter, in the ground cable between the left of the rear window and the grounding point 703 Column Integration Module, on the steering column below the steering wheel 703a Column Integration Module, in the steering column unit - 771 Connection, AUX in the center console - 8 pin connector - H8-1 Grey connector on the parcel shelf by the left C-pillar H8-10 On side below right D-pillar near the side window H8-17 Under right A-pillar - 33-pin connector - H33-1 Black connector on the console to the left of the ignition switch - 102-pin connector - H102-1 Under left A-pillar - Crimp connections - J76 LHD: Approx. 40 mm from branching point cigarette lighter towards grounding point G41 RHD: Approx. 130 mm from branching point grounding point G43 towards the radio CRIMP CONNECTION J76, DASHBOARD HARNESS - Grounding points - G41 In the instrument well to the left of the knee member GROUNDING POINT G41 G47A in steering wheel GROUNDING POINT G47A G47B in steering wheel GROUNDING POINT G47B G49 In the left C-pillar GROUNDING POINT G49 (4D)

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For additional information, see ELECTRICAL COMPONENT LOCATOR .

LIST OF COMPONENTS

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For additional information, see ELECTRICAL COMPONENT LOCATOR .

LIST OF COMPONENTS No. Name Location Graphic - Components - 266RCW Subwoofer in spare wheel well 266RLW Speaker, woofer, rear, LH, 4D: to the left in the parcel shelf 5D: 266RRW Speaker, woofer, rear, RH, 4D: to the right in the parcel shelf 5D: 354R Rear speaker amplifier, 4D/CV: behind the rear left wheel housing 5D: in front of the rear right wheel housing 701 Main fuse box in the luggage compartment on the wall behind the rear left wheel housing 22 - 8-pin connectors - H8-1 Grey connector on the parcel shelf by the left C-pillar - 10-pin connector - H10-7 In the torsion box - Crimp connections - J99 4D: Approx. 170 mm from branching point LH seat towards grounding point G33P/S CV: Approx. 520 mm from branching point to grounding point G33P/S towards the LH rear door CRIMP J99, MAIN HARNESS - Grounding points - G14 By the seat member under the left seat GROUNDING POINT G14

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For additional information, see ELECTRICAL COMPONENT LOCATOR .

LIST OF COMPONENTS No. Name location Graphic - Components - 22 Main fuse box, dashboard, on the short side of the dashboard by the left door 3 355F Front CD player/changer, lowest in the center of the dashboard - Crimp connections - J80 LHD: Approx. 80 mm from branching point grounding point G43 towards grounding point G41 RHD: Approx. 70 mm from branching point grounding point G43 towards SID CRIMP J80, INSTRUMENT HARNESS - Grounding points - G43 On the right of the knee member GROUNDING POINT G43

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For additional information, see ELECTRICAL COMPONENT LOCATOR

LIST OF COMPONENTS No. Name Location Graphic - Components - 355R Rear CD changer, on the left in the luggage compartment 701 Electrical center, luggage compartment on the wall behind the rear left wheel housing 24 - Crimp connections - J99 4D: Approx. 170 mm from branching point LH seat towards grounding point G33P/S CV: Approx. 520 mm from branching point to grounding point G33P/S towards the LH rear door CRIMP J99, MAIN HARNESS - Grounding points - G14 By the seat member under the left seat GROUNDING POINT G14

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