SsangYong Musso. Manual - part 144
1F-160 ENGINE CONTROLS
SSANGYONG Y158
DIAGNOSTIC TROUBLE CODE (DTC) P0135-86
O2 BANK 1 SENSOR 1 HEATER SHORT CIRCUIT TO BATTERY
Circuit Description
In order to control emissions, a catalytic converter is
used to convert harmful emissions into harmless water
vapor and carbon dioxide.
The Engine Control Module (ECM) has the ability to
monitor this process by using a Heated Oxygen Sensor
(O2S 1). The O2S 1 produces an output signal which
indicates the storage capacity of the catalyst. This in
turn indicates the catalyst’s ability to convert exhaust
emissions effectively.
If the O2S 1 pigtail wiring, connector, or terminal is
damaged, the entire O2S 1 assembly must be replaced.
Do not attempt to repair the wiring, connector, or
terminals. In order for the sensor to function properly, it
must have a clean air reference provided to it. This clean
air reference is obtained by way of the O2S 1 wire(s).
Any attempt to repair the wires, connector, or terminal
and degrade the O2S 1 performance.
Conditions for Setting the DTC
•••••
Current is between 3 ampares and 6 ampares
(depending on driver condition).
•••••
Output stage is active.
Action Taken When the DTC Sets
•••••
The Malfunction Indicator Lamp (MIL) will illuminate
after two consecutive driving cycles in which the diag-
nostic 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.
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
Check for the following conditions:
•••••
An intermittent may be caused by a rubbed-through
wire insulation or a wire contacting the exhaust.
•••••
Check for a poor connection or a damaged harness
and inspect the harness connectors for the following
conditions:
•••••
Improper mating
•••••
Broken locks
•••••
Improperly formed
•••••
Damaged terminals
•••••
Poor terminal-to-wire connection
•••••
Damaged harness
Test Description
Number(s) below refer to the step number(s) on
theDiagnostic Table.
1. The 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.
YAB1F130