BMW 325i 1989 Bedienerhandbuch PDF herunterladen (Seite 16)

6.) Perform a power reset of all modules (entire car)

NOTE: before doing this procedure, get your radio security code from the dealer.

a) Disconnect the main car battery.

b) Activate the emergency flasher lights (this will fully drain all power from

all ECUs) and wait 5 minutes.

c) Reconnect the main battery and try the tool again.

7.) Module troubleshooting: If you suspect a particular module is

malfunctioning or damaged, you may wish to consult repair documenta-

tion for the car (see page 30) and attempt to isolate the problem by

removing the module from the diagnostic bus. [WARNING: This procedure

is for qualified mechanics only.] A malfunction of the ABS unit ground

wiring which can cause diagnostic bus problems on a large number of

BMWs. This is often the problem on BMWs built prior to 10/94 that are

getting the "E" message on the code reader/reset tool. Call us for a copy

of BMW service bulletin 34 01 96 or go to

www.bavauto.com/servicebulletins.

8.) Visit your local BMW dealership. The code reader/reset tool will not serve

it's intended purpose if the diagnostic bus is impaired by a malfunctioning

control module. If one of the modules is inhibiting communication, it is

necessary to visit a BMW dealer or qualified repair facility to diagnose

and fix/replace the bad module.

“I’m having trouble resetting the lights.”

The lights on the code reader/reset tool are working as they are supposed to

but one of the following occurs:

a) The reset seemed successful but the service lights come back on shortly

after the reset was done.

b) The service lights stay on while the ignition is off and the key is out of

the ignition switch.

c) The service lights flash off and on.

d) The service lights will not reset at all. (Note: On some BMW models, the

service lights will not reset until the green “countdown” lights are all out.

e) The tachometer, temperature gauge or fuel economy gauge seem erratic

(meter needle jumps rapidly) or have quit working completely.

The list of problems above usually indicates a dying or dead backup battery on

your SI (Service Interval) computer circuit board. If the backup battery dies, the

SI computer has to re-start every time you start your car, at which point an

"Inspection" will be indicated. Winter storage without a trickle charger is the

most common cause of premature SI battery failure. Replacment SI boards are

available from Bavarian Autosport. Call 1.800.535.2002.

“The tool won’t reset the other warning lights.”

The code reader/reset tool will not reset the brake lining light, the SRS/airbag

light or the ABS brake light; it resets only the Check Engine, Service Engine

Soon, Oil Service and Inspection lights.

Common Problems / Troubleshooting

“The tool doesn’t fit my BMW.”

a) You may not have found the correct diagnostic plug (please closely review

the illustrations on page 4 and 5).

b) Your BMW is 1988 or older and equipped with a 15-pin plug. An Adapter is

available (part # SR 300A) to adapt the code reader/reset tool to older

BMWs for service light reset only; no codes can be read by the tool on

BMWs with the 15 pin connector.

c) You do not have the proper version of the tool for your BMW. There are two

native connector configurations for the code reader/reset tool:

OBDI code reader/reset tool fits BMWs 1987 to year 2000 (20-pin

format). A 16-pin format adapter is available for use on 2001 and later

BMWs (part number SR 300-16A).

OBDII code reader/reset tool fits BMWs 2001 on: (16-pin

format) No Adapter is available that will allow use of this tool on BMWs

built prior to 2001.

“Where’s the Adapter I ordered?”

If you ordered the SR 300A Adapter and do not see it in the box, do the

following before calling Customer Service:

a) Check to see if the tool fills the entire storage case

b) See if there are three silver pins in the tool connector.

If you answered yes to both, then the Adapter is there, attached to the end

of the tool (we ship them plugged together).

“There’s a flashing “E” on tool.”

Occasionally the code reader/reset tool will flash "E" when an attempt is made

to read codes or reset the MIL light (Check Engine or Service Engine Soon). "E"

means the car is not responding to the tool: This happens when the data line

(also called "diagnostic bus") inside the car is "hung" or disabled.

Try the following:

1.) Check the insertion depth of the code reader/reset tool. If it is not fully

inserted, the unit will not work. See page X.

2.) Reverse the power-up sequence. Plug in the code reader/reset tool first,

THEN turn on the ignition key. This is the opposite of the routine

specified by the manual and the tool label. This procedure has proven

very effective on some cars.

3.) Check the pins in your BMW’s diagnostic connector to see if any pins are

bent or recessed. A number of BMW connectors had pin 19 improperly

installed. If it appears pin 19 is recessed, call us for a copy of BMW serv-

ice bulletin 12 09 94 or go to www.bavauto.com/servicebulletins.

4.) Cycle the power. Plug in tool and cycle the ignition key on and off two or

three times. (DO NOT START THE ENGINE!)

5.) Observe that no other MIL lights are on. Often a malfunctioning module

(e.g. ECU, EGS/transmission, ABS traction control, etc.) can impair or

“hang” the diagnostic bus.

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