SsangYong Musso. Manual — part 152
1F-192 ENGINE CONTROLS
SSANGYONG Y158
DIAGNOSTIC TROUBLE CODE (DTC) P0153
O2 BANK 2 SENSOR 3 SLOW RESPONSE (3.2L DOHC)
Circuit Description
The monitoring starts after the enable conditions have
been met without interruption and the delay for the
activation condition is elapsed. Should the average period
length within a defined number of control cycles of the
lambda controller exceed its limit, a DTC P0133 will
set.
If the O2S 3 pigtail wiring, connector, or terminal is
damaged, the entire O2S 3 assembly must be replaced.
Do not attempt to repair the wiring , connector, or
terminals could result in the obstruction of the air ref-
erence and degrade O2S 3 performance.
Conditions for Setting the DTC
•••••
DTCs P0101, P0102, P0103, P0135, P0335 and
P0336 are not set.
•••••
Oxygen sensor heater status is concluded.
•••••
Misfire status is none.
•••••
Average period length of 25 lambda control cycles
are greater than 1000 milliseconds.
•••••
Lambda control status are enabled for 85 seconds
and active.
•••••
Engine speed is between 1890 rpm and 3510 rpm.
•••••
Engine load is between 0.4 and 0.7.
•••••
Catalyst temperature is greater than 350 °C (662 °F).
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 ignition
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
The DTC P0153 or slow response is most likely caused
by one of the following items:
•••••
Fuel pressure - The system will be lean if the fuel
pressure is too low. It may be necessary to monitor
the fuel pressure while driving the vehicle at various
road speeds and/or loads to confirm.
•••••
Leaking injector - A leaking or malfunctioning injector
can cause the system to go rich.
•••••
Pressure regulator - Check for a leaking fuel pres-
sure regulator diaphragm by checking for the pres-
ence of liquid fuel in the vacuum line to the pressure
regulator.
•••••
Throttle Position (TP) sensor - An intermittent TP
sensor output can cause the system to go rich due
to a false indication of the engine accelerating.
•••••
O2S 3 contamination - Inspect O2S 3 for silicone
contamination from fuel or use of improper room tem-
YAB1F150
ENGINE CONTROLS 1F-193
SSANGYONG Y158
perature vulcanizing (RTV) sealant. The sensor may
have a white powdery coating, resulting in a high but
false voltage signal (rich exhaust indication). The
ECM will then reduce the amount of fuel delivered to
the engine causing a severe surge or driveability
problem.
Test Description
Number(s) below refer to the step number(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 re-
cords 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.
13. The replacement ECM must be reprogrammed. Re-
fer to the latest Techline procedure for ECM repro-
gramming.
16. If no malfunctions have been found at this point and
no additional DTCs were set, refer to “Diagnostic
Aids” for additional checks and information.
1
Step
Action
Value(s)
Yes
No
DTC P0153 O2 Bank 2 Sensor 3 Slow Response (3.2L DOHC)
-
Go to Step 2
Go to “Euro
On-Board
Diagnostic
System Check”
2
3
4
5
6
Perform the Euro On-Board Diagnostic (EOBD) System
Check.
Is the system check complete?
1. Turn the ignition ON, with the engine OFF.
2. Install a scan tool.
Are any additional Diagnostic Trouble Codes (DTCs)
set?
1. Start the engine and idle at normal operating
temperature.
2. Operate the vehicle within the specified parameters
under Conditions for Setting the DTC.
3. Using the scan tool, monitor the specific DTC
information for DTC P0153 until DTC P0153 test
runs.
Does the scan tool indicate DTC P0133 failed this
driving cycle?
Check the exhaust manifold/catalytic converter for a
leak and repair as necessary.
Is the repair complete?
Visually /physically inspect for the following items:
•••••
Oxygen sensor (O2S 3) is securely installed.
•••••
Corrosion on the terminals.
•••••
Terminal tension (at the Engine Control Module[ECM]
and the O2S 3).
•••••
O2S 3 wiring harness for poor terminal
connection or damaged wiring.
Is a problem found in any of the above areas?
1. Turn the ignition OFF.
2. Disconnect the O2S 3 electrical connector.
3. Jumper the O2S 3 low circuit, terminal 2 to ground.
4. Turn the ignition ON, with the engine OFF.
Does the scan tool indicate the voltage between the
specified value?
450 - 550 mV
Go to Step 7
Go to Step 9
-
Go to Step 15
Go to Step 5
-
Go to Step 8
Go to Step 6
-
Go to
applicable
DTC table
Go to Step 3
-
Go to Step 4
Go to
“Diagnostic
Aids”
1F-194 ENGINE CONTROLS
SSANGYONG Y158
Jumper the O2S 3 signal and low circuits terminals 1
and 2 to ground.
Does the scan tool indicate the voltage below the
specified value?
Repair the condition as necessary.
Is the repair complete?
1. Turn the ignition OFF.
2. Disconnect the ECM connector (white).
3. Check the O2S 3 low circuit for an open or poor
connection and repair as necessary.
Is the repair complete?
Check the ECM terminal 22 for a poor connection and
repair as necessary.
Is the repair complete?
Check the O2S 3 signal circuit for an open or a short to
ground and repair as necessary.
Is the repair complete?
Check the ECM terminal 23 for a poor connection and
repair as necessary.
Is the repair complete?
Replace the ECM.
Is the repair complete?
Replace the O2S 3.
Is the repair complete?
1. Using the scan tool, clear the Diagnostic Trouble
Codes (DTCs).
2. Start the engine.
3. Operate the vehicle within the conditions for setting
this DTC as specified in the supporting text.
Does the scan tool indicate that this diagnostic ran and
passed?
Check if any additional DTCs are set.
Are any DTCs displayed that have not been diagnosed?
Step
Action
Value(s)
Yes
No
DTC P0153 O2 Bank 2 Sensor 3 Slow Response (3.2L DOHC) (Cont’d)
7
8
10
-
Go to Step 15
Go to Step 12
9
-
Go to Step 15
Go to Step 11
11
-
Go to Step 15
-
12
14
15
16
-
Go to Step 15
-
-
Go to Step 15
Go to Step 10
13
-
Go to Step 16
Go to Step 2
200 mV
Go to Step 14
Go to Step 12
-
Go to Step 15
Go to Step 13
Go to Step 15
-
-
-
Go to
applicable
DTC table
System OK
ENGINE CONTROLS 1F-195
SSANGYONG Y158
BLANK
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст