Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Performance and Technical chat

Reply
 
LinkBack Thread Tools Display Modes
Old 09-08-2017, 06:56 AM   #1
Registered User
 
Join Date: Nov 2016
Location: Somerset
Posts: 3
Trigger Unit Location on Boxster 986

Hi, I have Airbag light on 2002 Boxster 3.2S, Right hand drive.
I have narrowed down the cause of Airbag staying on to the Trigger Unit. Searching for error codes shows Fault 20, Driver Ignition Circuit. I have checked the clock spring for electrical continuity to Driver Airbag, removal of Driver's Airbag shows Error 21, Drivers airbag. Code erased with code reader on re-connection.
Where is the Trigger Unit?
How can I check to see if it is working?
I do not have access to the 'special tool' 9516 mentioned in the Porsche Technical Manual to check functionality.
Is it possible to replace unit with a secondhand one from another Boxster?
Any advice would be great. Thanks
mahadevdave is offline   Reply With Quote
Old 09-08-2017, 08:45 AM   #2
Registered User
 
Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 5,146
Quote:
Originally Posted by mahadevdave View Post
Hi, I have Airbag light on 2002 Boxster 3.2S, Right hand drive.
I have narrowed down the cause of Airbag staying on to the Trigger Unit. Searching for error codes shows Fault 20, Driver Ignition Circuit. I have checked the clock spring for electrical continuity to Driver Airbag, removal of Driver's Airbag shows Error 21, Drivers airbag. Code erased with code reader on re-connection.
Where is the Trigger Unit?
How can I check to see if it is working?
I do not have access to the 'special tool' 9516 mentioned in the Porsche Technical Manual to check functionality.
Is it possible to replace unit with a secondhand one from another Boxster?
Any advice would be great. Thanks
On your car, it should be under the center console. It is just a control box, so there is nothing to see. As for Porsche tool 9156, when we bought ours, it was $2K (all up front) and nearly a two year wait to get it (the elves in the Black Forest are union). To swap in a used one, you will need access to a PIWIS unit to code it in.
__________________
Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
JFP in PA is offline   Reply With Quote
Old 09-08-2017, 08:50 AM   #3
Registered User
 
Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 5,146
Fault code 21 points to the steering wheel - likely an open connection to the airbag on the wheel, usually the clock spring.

Fault code 20 -- Status lead, signal converter -- Short to ground

1. Pull plug I off the alarm system control module.
2. Pull off the plug on the signal converter for the transponder.
3. Ohmmeter at alarm system control module plug 1 pin 12 and ground,
Display: Infinite ohms
If display < 5 ohms check wiring harness for chafing and pinching damage.

__________________
Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
JFP in PA is offline   Reply With Quote
Reply

Tags
986 , 986 boxster , airbag light on , driver ignition circuit , trigger unit


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 05:14 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page