SsangYong Musso. Service manual - part 140
1F-144 ENGINE CONTROLS
SSANGYONG Y158
DIAGNOSTIC TROUBLE CODE (DTC) P0132
O2 BANK 1 SENSOR 1 HIGH VOLTAGE
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
•••••
O2S 1 voltage is greater than 1.0 volts (2.3L DOHC).
•••••
O2S 1 voltage is greater than 1.05 volts (3.2L DOHC).
•••••
Lambda control status is enabled.
•••••
P0135; lambda heater status is faultless.
•••••
Oxygen sensor heater status is concluded.
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
An intermittent may be caused by rubbed-through wire
insulation or a wire contacting the exhaust.
•••••
Exhaust system - Inspect the exhaust system for
leaks. Check the exhaust between the three-way cat-
alytic converter and the flange for leaks, corrosion,
or for loose or missing hardware and repair as neces-
sary.
•••••
Poor connection or damaged harness - Ensure that
the O2S 1 pigtail is not contacting the exhaust. heck
for the following conditions:
•••••
improper mating
•••••
Broken locks
•••••
Improperly formed
•••••
Damaged terminals
•••••
Poor terminal-to-wire connection
•••••
Damaged harness
•••••
Intermittent test - Observe the O2S 1 on the scan
tool while moving related connections and the wiring
harness with the ignition ON. If the failure is induced,
the O2S 1 display will change. This may help isolate
the location of the malfunction.
YAB1F130