MotoLogic DTC P0496 User Manual
2/16/2021 DTC P0496 - 3.6L LFX • 2015 GMC Truck Terrain • MotoLogic
https://www.motologic.com/car/2015_gmc_truck_terrain_100302886/article/2015_gmc_truck_terrain_100302886_b79cb09cfce9b76e6e6739b764cc80
…
DTC P0496
DTC P0496 - 3.6L LFX
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic approach.
Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptor
Evaporative Emission (EVAP) System Flow During Non-Purge
Circuit/System Description
This DTC tests for undesired intake manifold vacuum flow to the evaporative emission (EVAP) system. The engine control module (ECM)
seals the EVAP system by commanding the EVAP purge solenoid valve OFF and the vent solenoid valve ON. The ECM monitors the fuel
tank pressure (FTP) sensor to determine if a vacuum is being drawn on the EVAP system. If vacuum in the EVAP system is greater than a
predetermined value within a predetermined time, this DTC sets.
The following table illustrates the relationship between the ON and OFF states, and the Open or Closed states of the EVAP purge and vent
solenoid valves.
Conditions for Running the DTC
DTCs P0068, P00C8, P00C9, P00CA, P0090, P0091, P0092, P0106, P0107, P0108, P0111, P0112, P0113, P0114, P0116,
P0117, P0118, P0122, P0123, P0125, P0128, P0191, P0192, P0193, P0222, P0223, P0601, P0604, P0606, P0697, P06A3,
P06DB, P06DE, P0A1D, P1104, P127A, P127C, P127D, P15F2, P160D, P160E, P1682, P16A0, P16A1, P16A2, P16F3,
P0443, P0449, P0452, P0453, P0454, P0502, P0503, P0722, P0723, P2100, P2101, P2102, P2103, P2122, P2123, P2127,
P2128, P2135, P2138, P215B, P2176, P228C, P228D, U0073, U0074, U0293, U1817, are not set.
The ignition voltage is between 11–32 V.
The engine OFF time is greater than 48 min,
The barometric pressure (BARO) is greater than 70 kPa.
The fuel level is between 10–90%.
The startup engine coolant temperature (ECT) is less than 35°C (95°F).
The startup intake air temperature (IAT) is between 4–34°C (39–93°F).
DTC P0496 runs once per cold start, for up to 17 min, when the above conditions are met.This test will run with the purge valve
and the vent valve closed.
ECM Command EVAP Purge Solenoid Valve EVAP Vent Solenoid Valve
ON Open Closed
OFF Closed Open
1/3
2/16/2021 DTC P0496 - 3.6L LFX • 2015 GMC Truck Terrain • MotoLogic
https://www.motologic.com/car/2015_gmc_truck_terrain_100302886/article/2015_gmc_truck_terrain_100302886_b79cb09cfce9b76e6e6739b764cc80
…
Conditions for Setting the DTC
The ECM detects greater than 10 in H2O vacuum for 5 s during a non-purge condition.
Action Taken When the DTC Sets
DTC P0496 is a Type B DTC.
Conditions for Clearing the MIL/DTC
DTC P0496 is a Type B DTC.
Diagnostic Aids
An intermittent condition could be caused by:
An improperly installed or damaged EVAP Purge Solenoid Valve
A temporary blockage or restriction in the EVAP Purge Solenoid Valve
Reference Information
Schematic Reference
Engine Controls Schematics
Connector End View Reference
Component Connector End Views
Powertrain Component View
Powertrain Component Views
Description and Operation
Evaporative Emission Control System Description
Electrical Information Reference
Circuit Testing
Connector Repairs
Testing for Intermittent Conditions and Poor Connections
Wiring Repairs
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
1. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you
observed from the Freeze Frame/Failure Records data.
2. Verify the DTC does not set.
⇒ If the DTC sets
Refer to Circuit/System Testing
⇓ If the DTC does not set
All OK
Circuit/System Testing
1. Ignition ON, engine OFF.
2. Command the EVAP Purge/Seal function to System Seal or Not Venting with a scan tool to seal the EVAP system.
2/3
Loading...