SsangYong Musso. Manual - part 166
1F-248 ENGINE CONTROLS
SSANGYONG Y158
Circuit Description
When the ignition switch is turned ON, the Engine Con-
trol Module (ECM) will activate the pump relay and run
the in-tank fuel pump. The fuel pump will operate as
long as the engine is cranking or running and the ECM
is receiving ignition reference pulses.
If there are no reference pulses, the ECM will shut off
the fuel pump within 2 seconds after the ignition switch
is turned ON, engine stopped or engine stalled.
Conditions for Setting the DTC
•••••
Voltage is less the 2 volts for ground.
•••••
Voltage is less the 3 volts for open.
Action Taken When the DTC Sets
•••••
The MIL will illuminate after two consecutive driving
cycles in which the diagnostic runs with the fault
active.
•••••
The ECM will record operating conditions at the time
the diagnostic fails. This information will be stored in
the Freeze Frame and Failure Records buffers.
•••••
A history DTC is stored.
DIAGNOSTIC TROUBLE CODE (DTC) P0231
FUEL PUMP SHORT CIRCUIT TO GROUND OR OPEN
Conditions for Clearing the MIL/DTC
•••••
The MIL will turn off after three consecutive driving
cycles in which the diagnostic runs without a fault.
•••••
A history DTC will clear after 40 consecutive warm-
up cycles without a fault.
•••••
The DTC(s) can be cleared by using the scan tool.
Diagnostic Aids
An intermittent problem may be caused by a poor con-
nection, rubbed through wire insulation, or broken wire
inside the insulation.
Test Description
The number(s) below refer to specific step(s) on the
diagnostic table.
1. Euro On-Board Diagnostic (EOBD) System Check
prompts the technician to complete some basic
checks and store the freeze frame and failure
records data on the scan tool if applicable. This
creates an electronic copy of the data taken when
the malfunction occurred. The information is then
stored on the scan tool for later reference.
YAA1F39A