2008 Saab 9-3 Logo

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craig bederka Posted on Jan 05, 2016

2008 saab 9 3 2.0 turbo no ground circuit ECU for headlamp,wiper,horn,front turn signal and cannot communicate with ECU with scanner unless I feed ground to an empty relay center..then all activates

5 Related Answers

Anonymous

  • 18 Answers
  • Posted on Sep 16, 2008

SOURCE: saab turbo 9-3 need computer trouble code

P1300 is random misfiring. I suggest replacing your DI cassette with a known good unit or a replacement unit. Give more info on your vehicle. Any symptoms or running rough?
Justin
Strictly Saab
Melbourne, FL

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Anonymous

  • 334 Answers
  • Posted on Dec 03, 2008

SOURCE: remove rear wiper blade on saab 9-5 estate

Best way go to a parts store and ask for help and they would probably slip it on for you
God Bless you Greg

Jeff Orthober

  • 60 Answers
  • Posted on Jan 10, 2009

SOURCE: I need instructions for replacing the turbo on a Saab 1999 9-5 4 cyl turbo

Hi, I have done this and it is not too bad, but will take you about 4 hours if you are good, and longer if you have not done much mechanics.

The trick is to find a reasonably priced turbo, check ebay. There is a dude on there that just does rebuilt turbos. Very good, got mine for $

I have been reading up on turbo replacement procedure and I have found this list: First, there are a couple of questions that I have about the list:

2 air openings, pretty easy to figure out
2 exhaust openings, pretty easy to figure out
3 round openings in the center, all banjo bolts?
1 round / two bolt opening in the center.
1 Hose fitting off of the waste-gate
1 Hose fitting off of the air side of the turbo.

STEP 1 Open the expansion tank cap to release the system pressure.
STEP 2 Raise the car & Remove the lower front cover under the car
STEP 3 Drain off the coolant & Remove the turbo brackets
STEP 4 Loosen the return fitting and the pipe from the turbo to the block
STEP 5 Loosen the oil pipe between the filter adapter and the turbo
STEP 6 Lower the car to the floor & Remove the bypass valve & Unplug the connector from the control valve
STEP 7 Disconnect the mass air flow sensor connector & Loosen the hoses to the turbo
STEP 8 Remove the crankcase banjo bolt from the intake manifold and unscrew the bolt from the cam cover
STEP 9 Move the pipe and wiring aside & Remove the engine lifting eye
STEP 10 Remove the mass air flow sensor and air hose
STEP 11 Remove the exhaust manifold heat shield by removing the nut and two clips from underneath
STEP 12 Undo the intake manifold clamp at the turbo & remove the intake
STEP 13 Disconnect the hose clip on the hose between the intercooler & turbo & plug it to keep something from falling in it
STEP 14 Loosen the front exhaust system from the turbo & lower the front exhaust system away from the turbo (DO NOT BEND -THE FLEX HOSE)
STEP 15 Remove the oil pipe from the oil filtermag-glass_10x10.gif adapter & grab the copper washers
STEP 16 Loosen the coolant pipe by the turbo & grab the copper washers & loosen the coolant pipe bolt
STEP 17 Remove the coolant return pipe from the cylinder head & pressure sensor bracket. Once again, Grab the copper washers
STEP 18 Undo the coolant return pipe bolt by the turbo
STEP 19 Undo the nuts securing the turbo to the exhaust manifoldmag-glass_10x10.gif. (spray the nuts with WD40)
STEP 20 Install in Reverse


Just did this for the first time. Here are a few hints that may help others.

1) PB BLASTER is your friend. Remove the exhaust top front heat shield and hit exhaust nuts with PB Blaster as soon as you start the job, or night before.

2) Make sure that you have 12mm closed end wrench with AND without ratchet. Also a 1/2 size 12mm socket if you can find / make. These will help.

3) You don't have to remove the oil filtermag-glass_10x10.gif, but there one bolt that it would be nice for. I did not and did manage to get the job done.

4) Take you time. More of finding the right tool combination for each bolt.

5) Two banjo bolts on the turbo were really on there. Needed to use a mini-acetylene torch to eat up.

6) Have extracting sockets and bits ready just in case there are issues getting bolts / nuts off.

Turbo had quite a bit of end-play, but spun fine. Classic symptoms, blue smoke at start up and from time to time when driving. It was also making a bit of noise at idle.

jeffo2 ort11


Also, should get new copper washers. I did not have I have some micro leaks from time to time but nothing bad.

Anonymous

  • 477 Answers
  • Posted on May 05, 2009

SOURCE: fault with saab 9-3 aero

Hello I have a saab 9.3 SS 04 and had the same problem.

- intermittent wipe doesn't work, at all
- windscreen washers don't work, at all
- "normal" continuous, and fast wipe work, but the wipers
freeze in the middle of the windscreen if you let go of the
control stalk, rather than sweeping back to the resting position
- same "freeze" happens with the manual wipe (push down on the control stalk)

The weird thing is that, this morning, for about 10 minutes, it seemed to fix itself,
partially - the washers started working etc - but the intermittent wipe still didn't work. However not long after that it went back to the symptoms described above.
also if I unplugged my car battery for a minute the washers worked for several seconds but again same problem occurs.

Solution is to replace your wiper motor. its that "simple"
worked for me. The wiper motor has a lot of electronic stuff and seems to control the washer engine.
Good luck.

Anonymous

  • 1 Answer
  • Posted on Sep 04, 2009

SOURCE: My Saab 9-3 turbo wastegate seems to be stuck

I think the actual problem may be generic to Saabs of the same age. So maybe this information will help many others

Yes the turbo was faulty but no it was simple to fix and did not cost me a lot.

the wastegate ( a valve which is opened to switch on the turbo) is driven by a vacuum actuator - and the actuator leaver arm which connects to the wastegate to the actuator had fallen off.

So The wastegate valve was stuck semi open up and never moved.

This does not directly show any engine error or cause any emissions
problems, as the car passed an a mot before immediately before the fault was found.

My local garage man did the work needed in 2.5 hours on the ramp and did not have to take much too bits to make a good repair.

Car goes like a train, and the engine management light - which was coming on at odd times has since stayed off.

I suspect that the management light which was coming on due to emissions sensors -- triggered by some series of events which cause the emmision to go out out of line, due to the turbo not fully working.

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1answer

2008 Buick Lacrosse. The passenger front parking light does not come on, but the turn signal works.

Possibly bad ground connection - G100
In back of the right headlamp on the frame. Headlamps, turn signals, parking lamp for the right all ground at that point. Corrosion in the wire, broken park lamp wire.
Headlamps, turn signals, parking lamp all have their own ground wire that connects at that point.

Hooking up a professional grade scan tool an check for DTC'S - diagnostic trouble codes in the BCM - body control module may point in a diagnostic direction.

DTC B3949: Right Front Turn Signal
Right Front Park/Turn Signal Inoperative

Circuit/System Description
The Body Control Module (BCM) controls the turn signals based on an input from the turn signal switch, part of the multifunction turn signal lever. The BCM receives an input from one of two signal circuits to determine which turn signal function is requested. When the turn signal lever is placed in the LEFT position, the left turn signal switch signal circuit is grounded indicating that left turn signal operation is requested. When the turn signal lever is placed in the RIGHT position, the right turn signal switch signal circuit is grounded indicating that right turn signal operation is requested.
When a turn signal input is received from the turn signal switch, the BCM will activate the appropriate turn signals. The BCM pulses voltage to the applicable turn signals via the turn signal lamp supply voltage circuits, illuminating the required turn signal lamps.

B3949
A short to voltage, short to ground, or an open/high resistance is seen on the right front turn signal lamp supply voltage circuit.

You know how to test electrical circuits? Using voltage drop.

watch these videos

Fix Electrical Problems by Understanding Voltage Drop Testing - YouTube

Mastering Voltage Drop Testing with Pete Meier and "G" Jerry Truglia - YouTube

Learn how to test, not guess.

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1answer

I drive a 2005 SAAB 9-7X the low beam light had gone out and I replaced them and I still have no low beam

Did you test the low beam electrical circuit using a volt meter ? Look at a wiring diagram to see what all is involved in turning the lights on ? Do you know how to test electrical circuits ?
Also reading service repair manual about the head lamps opp. would be a good thing to do .
Headlamps
The major common components of this system are the body control module (BCM), ambient light sensor, multifunction switch, park brake switch, and the headlamps.
The headlamps may be turned on in 2 different ways. First, when the driver places the headlamp switch in the HEADLAMP position, normal operation occurs. Second, with the headlamp switch is placed in the AUTO position, automatic lamp control (ALC) occurs. During ALC control, the headlamps will be in daytime running lamp (DRL) operation in daylight conditions, or low beam operation in low light conditions.
The low beam relay and high beam relay receive battery positive voltage directly from the battery through the HDM and COILS fuses in the underhood fuse block. The BCM supplies a ground signal to the low beam relay coil for automatic headlamp control and normal headlamp operation. The BCM also supplies ground to the high beam relay coil for high beam headlamp operation. When the driver places the headlamp switch in the HEADLAMP position and the dimmer switch is in the low beam position, the low beam relay energizes sending current flow through the left and right low beam headlamp fuses to both low beam headlamps. The dimmer switch sends a ground signal to the BCM in the high beam position and a momentary ground signal in the flash-to-Pass (FTP) position from G102 to deactivate the low beam headlights and activate the high beam headlights. With the headlights in the low beam position, the high beams may be momentarily turned on or flashed by activating the FTP portion of the switch.

Low Beams - Standard
The standard low beam headlamps receive voltage from the headlamp driver module located in the underhood fuse block. The body control module (BCM) controls the headlamp driver module with the headlamp low beam relay control circuit. Low beam control is determined by a signal on the headlamp dimmer switch signal circuit from the multifunction switch. When the headlamps are requested ON and the headlamp dimmer switch signal circuit is open, the BCM sends a pulse width modulated (PWM) ground signal though the headlamp low beam relay control circuit to the headlamp driver module which illuminates the low beam headlamps at a 100 percent intensity level. The right and left low beam circuits are independent and are fused separately in the underhood fuse block. The LOW HDLP-RT 10A fuse supplies voltage to the right low beam headlamp and the LOW HDLP-LT 10A fuse supplies voltage to the left low beam headlamp. The right and left headlamps are grounded at G103 and G107 respectively.

Your best bet mite be to have a qualified technician check it
1helpful
1answer

2005 Chevy Silverado 3500. Automatic headlights turn on, the engine dies. Turn it off, it still keeps running, even when the key is pulled out.cannot find the wiring issue..... ANY HELP??

What code's ? # code's P0 what ? Any BCM - body control module code's ? Did you do diagnostic test's for said code's ? Do you know what a factroy diagnostic flow chart is ? Is the vehicle a 4X4 or 2X4 ? What engine ? Do you know what class 2 serial data bus is ? Do you have wiring diagrams ?
Headlamp ON/OFF control is determined by the body control module (BCM) by a signal on the headlamp switch headlamp on signal circuit when the headlamp switch is in the HEAD position. When the headlamp switch is in the AUTO position, the BCM determines headlamps ON/OFF by the voltage from the ambient light sensor.

High Beams
The high beam headlamps receive voltage from the headlamp HI relay located in the underhood fuse block. The body control module (BCM) controls the relay on the headlamp high beam relay control circuit. High beam control is determined by a signal on the headlamp dimmer switch signal circuit from the multifunction switch. When the headlamp dimmer switch signal circuit is grounded, the BCM grounds the headlamp high beam relay control circuit, illuminating the high beam headlamps. The right and left high beam circuits are independent and are fused independently in the underhood fuse block. The right and left headlamps are grounded at G100 and G104.
The high beam indicator is illuminated when the instrument cluster receives a class 2 serial data message from the BCM that the high beams are illuminated.
Low Beams
The low beam headlamps receive voltage from the headlamp LOW relay located in the underhood fuse block. The body control module (BCM) controls the relay on the headlamp low beam relay control circuit. Low beam control is determined by a signal on the headlamp dimmer switch signal circuit from the multifunction switch. When the headlamp dimmer switch signal circuit is open, the BCM grounds the headlamp low beam relay control circuit, illuminating the low beam headlamps. The right and left low beam circuits are independent and are fused independently in the underhood fuse block. The right and left headlamps are grounded at G100 and G104.

DTC B2645
The body control module (BCM) monitors the ambient light sensor signal circuit in order to determine if the daytime running lights (DRL) or the auto headlights (ALC) should be turned ON in the AUTO mode. When the BCM senses the ambient light sensor signal voltage is between 1.75-4.9 volts, either the DRL will be commanded ON or the ALC will be commanded ON depending upon the amount of light received by the sensor.

DTC B2645 Ambient Light Sensor Circuit
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1answer

Headlights turn on signals turn off idk whats up with that 05 uplander

Headlights turn on signals turn off ???? IF you signal for a turn an then turn on the headlamps the turn signal shut's off ? Do you know anything about automotive electronic's , BCM - body control modules etc.... The turn signals on your vehicle are controlled by the BCM .
The STOP/TURN fuse in the instrument panel (I/P) fuse block supplies battery positive voltage to the body control module (BCM) for the turn signal lamps. When the turn switch is placed in the left or right position, ground is applied to the BCM on the left or right turn signal switch signal circuit. The BCM then applies voltage to the appropriate front and rear supply voltage circuits.
Grounds for the various lamps are as follows:
• G100 supplies the right front lamps
• G101 supplies the left front lamps
• G400 supplies the right rear lamps
• G401 supplies the left rear lamps

As are the head lamps
When the headlamp switch is placed in the HEAD position, ground is applied to the headlamp switch headlamps ON signal circuit of the body control module (BCM). When either the headlamp switch is placed in the headlamps position or ALC is enabled, the BCM applies a ground to the headlamp low or high beam relay control circuit. This energizes the relay and applies battery positive voltage to the left and right low or high beam fuses in the underhood fuse block, then through the headlamp supply voltage circuits to the headlamps. Ground is applied at all times to the left headlamp from G101 and to the right headlamp from G100.

Your best bet mite be to take your vehicle to a qualified repair shop. Have the BCM checked for DTC- diagnostic trouble codes to start .
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I HAVE A 2008 SATURN VUE 3.5 WIPERS WILL NOT PARK OR SHUT OFF OR WILL PARK ANYWHERE I HAVE REPLACED MOTOR AND SWITH STILL HAVE PTOBLEM

Your windshield wiper's are computer controlled by the BCM - body control module . The wiper switch is an input to the BCM , which energizes two different relay's to turn on the wiper's . Taking the vehicle to a qualied repair shop an having diagnostic's run would be your best bet , unless you have a professional scanner that can read DTC'S - diagnostric trouble code's in the BCM !
DTC B3715 00: Front Wiper Relay Drive Circuit
DTC B3875 00: Wiper High Speed Relay Circuit
DTC B3922 00: Front Wiper Function Select Circuit
This is always the first step in the diagnostic process . An if you do not know how they work ,reading factory service manual info. should be done .
Circuit/System Description
The body control module (BCM) controls the wiper motor based on input from the windshield wiper washer switch. The BCM monitors the wiper washer switch through three separate signal circuits and a ground circuit. The windshield wiper switch high signal circuit is used to determine high speed wiper operation, the windshield wiper switch low signal is used to determine low speed, intermittent, and mist operation through the use of a resistor ladder, and windshield washer switch signal circuit is used to determine washer operation.
Your best bet , take it to a qualified repair shop.
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1answer

2001 Ford Windstar Van I am losing power to the instrument cluster. The charge l2001 Ford Windstar Van I am losing power to the instrument cluster about 10 seconds after starting. The charge light,air bag,...

All the thing's your having problems with are controlled by the computer's an communication network . (FEM) - front electronic module , insturment cluster , (REM) - rear electronic module. etc... It's probably a loose ground connection somewhere . The headlamp switch is a electronic input to the insturment cluster , the insturment cluster is hooked to the SCP - serial data network . The insturment cluster electronic's (computer ) microprocessor sends a message to the (FEM) to turn on light's , the front electronic module will then suppy a ground to the headlamps circuit turnning on the headlamps. Samething for the wipers an turn signals an horn too .
010 Ford SCP Communications
From looking at a wiring diagram i would look at ground connection G-304 . Do you know what a body ground is ?
This ground is located How to troubleshoot headlights intermittently on and off with headlights...

1down vote Basically your headlamps are controlled by a computer. The Front Electronic Module (FEM) to be exact. The FEM grounds the headlamps when it wants to turn them on. This system was an early Multiplex design that reduced wire and total circuits where the modules communicate on a single serial line, now referred to as the CAN Bus (Controller Area Network). You will likely need a scan tool to diagnosis the car, and not a cheap one, but a professional model. You many even need a factory scan tool, though I doubt if for a Ford. Outside of security theft deterrent systems they allow the aftermarket professional scan tools to access their systems.
So where do you go from here? With or without a scan tool, the grounds are a good place to start.
G303 are the main ground for the FEM.
G304 is connected via C179 (C means connector) and through S139 (S means splice)
G304 is located behind the LH cowl panel C179 is located behind the LH side of the instrument panel S139 Dash panel to headlamp junction, near T/O to C192 Front Electronic Module (FEM)
You can see the FEM, G304, and C179 in the picture below. Outside of checking the connections and wiring there is not much you can do without a scan tool.
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2answers

Fusebox diagram

hi, this is courtesy of ask me help desk...

FUSE PANEL INTERIOR

1 - 20 Amp (Yellow)Power Antenna Relay, Trailer Tow Relay.

2 - 15 Amp (Blue) Brake Lamps.

3 - 20 Amp (Yellow) Hazard Lamps.

4 - 15 Amp (Blue) Security Lamp.

5 - 15 Amp (Blue) Interior Lighting.

6 - 15 Amp (Blue) Security Alarm Module.

7 - 15 Amp (Blue) Security Alarm Relay, Security Alarm Module, Flash-To-Pass.

8 - 15 Amp (Blue) Overhead Console, Keyless Entry, Radio Memory, Clock/Chime Module, Power Locks, Power Mirrors, HVAC & VIC.

9 - 20 Amp (Yellow) Rear Wiper.

10 - 15 Amp (Blue) Radio Accessory.

11 - 15 Amp (Blue) Cigar Lighter.

12 - 15 Amp (Blue) Parking Lamps, Automatic Headlamps.

13 - 20 Amp (Yellow) Horn Relay.

14 - 20 Amp (Yellow) Power Lock Relays.

15 - 3 Amp (Violet) ABS Module & Relay.

16 - 20 Amp (Yellow) Turn Signals.

17 - 7.5 Amp (Brown) Heater & Air Conditioning Module.

18 - 15 Amp (Blue) Air Bag Module.

19 - 15 Amp (Blue) Interior Mirror, Auto Headlamps, Overhead Console, VIC/GDM Module, Heated Rear Window Relay Coil, Illuminated Entry Relay & Chime Module.

20 - 10 Amp (Red) Heated Rear Window Switch, Overdrive Switch, Speed Control.

21 - 15 Amp (Blue) Cluster, Security Alarm Module, Lamp Outage Module.

22 - 15 Amp (Blue) Air Bag Module, Speedometer, Tachometer, Telltales, Gauges.

23 - 15 Amp (Blue) Heated Mirror Feed, Heated Rear Window Switch.

24 - 7.5 Amp (Brown) Instrument Panel Illumination.

25 - 30 Amp Circuit Breaker Power Seats.

26 - 30 Amp Circuit Breaker Power Windows.

27 - 10 Amp Circuit Breaker Security Alarm Module, Front Wiper.

28 - 30 Amp Circuit Breaker Heated Rear Window Relay
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1answer

Wire color codes for '95 Ford stereo

i will post 96 Taurus. Not sure if the same as 95. you did not say which radio you have, base or premium.
please rate as fixya if this is what you need

Base Audio System With/Without Cassette Player

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Pin Number Circuit Circuit Function 1 729 (R/W) Battery Feed 2 57 (BK) Power Ground 3 434 (LB/BK) Pulse Width Modulated Illumination Signal (Analog) from Headlamp Switch 4 1002 (BK/PK) IGN/RUN/ACC 5 640 (R/Y) IGN/RUN/START 6 694 (BK/LG) Logic Ground 7 — Not Used 8 — Not Used


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Pin Number Circuit Circuit Function 1 593 (DB/W) Tape Audio RH + 2 594 (GY) Tape Audio RH - 3 57 (BK) Ground 4 833 (T) Audio Communications Protocol B 5 1068 (LG/BK) Audio system ON 6 723 (GY/R) Phone Wake Up 7 — Not Used 8 59 (DG/P) Rear Defrost 9 503 (BR/LG) Tape Audio LH + 10 504 (W/PK) Tape Audio LH - 11 — Not Used 12 832 (LB/PK) Audio Communications Protocol A 13 — Not Used 14 — Not Used 15 1010 (DB/O) Heated Back Window 16 — Not Used

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Pin Number Circuit Circuit Function 1 803 (BK/PK) RH Rear Speaker (-) 2 802 (O/R) RH Rear Speaker (+) 3 811 (DG/O) RH Front Speaker (-) 4 805 (W/LG) RH Front Speaker (+) 5 801 (T/Y) LH Rear Speaker (-) 6 800 (GY/LB) LH Rear Speaker (+) 7 813 (LB/W) LH Front Speaker (-) 8 804 (O/LG) LH Front Speaker (+) 9 — Not Used 10 747 (R/PK) Power Antenna (Up Signal) 11 — Not Used 12 694 (BK/LG) Ground 13 694 (BK/LG) Ground 14 720 (R/Y) B+ Supply
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