Recall 234 - Engine Idle Speed Drop Or Stall, TCM DTC P074468

Recall 234: Engine idle speed drop or stall.

TCM DTC

Title P074468.

Ref No US23743.1.2 en-GB

Issuer -

Partner 3 US 7510

Volvo Cars North America

Func Group 2800

Func Desc ignition and control system

Status Released

Status Date 01-24- 2012

Issue Date 01-24-2012

Reference VIDA, SMB 28-234

Attachment





Vehicle Type








CSC Customer Symptom Codes





DTC Diagnostic Trouble Codes

Text

Rereleased due to unintended/inadvertent closure

CSC = Customer Symptom Code DTC = Diagnostic Trouble Code

Note!
If using a printed copy of this Retailer Technical Journal, first check for the latest online version.

DESCRIPTION:
Volvo Cars of North America, LLC (Volvo) has decided to conduct a voluntary safety recall on certain model year 2011 S80, XC70, S60, and XC6O vehicles. Volvo identified that the engine and transmission software calibration may be too sensitive. When the driver is braking and/or releases the accelerator pedal, the engine idle speed may drop resulting in a sudden engine stall without any prior warning. If this condition occurs, the transmission control unit will enter a temporary protection mode in order to prevent damage to the vehicles transmission. When starting the vehicle again, the driver can operate the vehicle safely home or to an authorized Volvo repair facility, but may experience a louder than usual transmission and a harder gear engagement.

The corrective action is to update the concerned vehicles with new Engine Control Module (ECM) and Transmission Control Module (TCM) software.

PRODUCT MODIFICATION:
At structure week 2010w41 (see chassis range above), Engine Control Module (ECM) software and TCM software have been improved in the following areas:

-Lock-up release
-Restarting fuel feed (after fuel cut-off)
-Purge
-TCM DTC P074468 will not trigger limp-home.

PARTS INFORMATION

Part # 30785201 - Software Upgrade (S80, XC70)
Part # 30788936 - Software Upgrade (S60, XC60)

SERVICE:
Perform an ECM Upgrade according to VIDA. An ECM Upgrade will automatically come with a

TCM Upgrade when purchased and downloaded.