TT001401

Tech Tips
Date: April 25, 2014
TT 00-14-01
2009-2014 Routan-Identifying Misfires using WiTech
To identify a misfiring cylinder when a random fault is set (P0300), utilize the following; Select PCM (ECM)
from the module menu (figure 1). At the top of the screen, mouse over “Monitors” to open the drop down
list. Select OBD II monitors. From the OBD II monitor list (figure 2), scroll down and select “Which cylinder
is misfiring”(figure 3). A value block displaying all cylinder misfire counts can be viewed and also monitored
while running to isolate the causal cylinder. Once the specific cylinder(s) have been isolated, proceed with
misfire diagnosis to determine root cause and repair as necessary.
Figure 1
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© 2014 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual
property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this
document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these
materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.
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Figure 2
Figure 3
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© 2013 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other intellectual
property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this
document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, nor may these
materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.