Engine Controls - False ECM DTC 434C

No: 28-66

DATE: 7-7-2006

MODEL YEAR:
S80, S60, V70, XC70, XC90, 2005 & 2006 (turbo engines only {type 91, 59, 54, 52})

CHASSIS:
S60 425000-520985
V70 459000-552728
S80 390000-434874
XC90 134000-254487
XC70 173000-220217

SUBJECT:
ECM DTC 434C Fuel tank system, leakage; Minor leak

REFERENCE: VIDA

This TNN supercedes the previous TNN 28-66 3/10/06 and replaces TNN's 28-63 & 28-57

DESCRIPTION:

ECM DTC 434C may be set in the above vehicles due to an over sensitivity in the engine management software. Perform the following tests:

^ Test the system for leakage using the methods in VIDA. If there are no actual leaks, proceed to upgrade the ECM software as described in the 'Service' section below.

^ Using the "quick-test of the fuel tank system" found in VIDA Vehicle Communication, fault trace any faults or leaks according to VIDA.

If a leak is found and remedied during fault tracing, thus solving the cause of the ECM 434C DTC, proceed to upgrade the ECM software as described in the 'Service' section below to prevent a false recurrence of DTC ECM 434C.

SERVICE:

Upgrade the engine management software using the ECM upgrade option in VIDA. SW P/N 30677021.





WARRANTY CLAIM INFORMATION