No
Intermittent Fault. Refer to
Yes
Step 16
Diagnostic completed.
5. Repair Instructions:
Replace the pre-catalytic oxygen sensor. Refer to
Pre-Catalytic Oxygen Sensor Replacement
.
2.2.7.22 DTC P0136 P0137 P0138 P0140 P2270 P2271
1. DTC Descriptor:
DTC
P0136
Post-Catalytic Oxygen Sensor Unreasonable
DTC
P0137
Post-Catalytic Oxygen Sensor Circuit Voltage Too Low
DTC
P0138
Post-Catalytic Oxygen Sensor Circuit Voltage Too High
DTC
P0140
Post-Catalytic Oxygen Sensor Circuit Malfunction
DTC
P2270
Post-Catalytic Oxygen Sensor Aging (Tool Lean)
DTC
P2271
Post-Catalytic Oxygen Sensor Aging (Too Rich)
After the vehicle is started, the control module works in the open-loop mode and ignores heated oxygen sensor signal voltage when
calculating air-fuel ratio. The control module provides approximately 450mV reference voltage to the heated oxygen sensor. When
the engine starts running, the heated oxygen sensor will be heated and begin to generate a 0-0.1V voltage. This voltage fluctuates.
Once the control module detects that the heated oxygen sensor voltage exceeds a threshold voltage, it will immediately enter into
the closed-loop mode. Control module determines the air-fuel ratio using the received heated oxygen sensor voltage signal. If the
heated oxygen sensor voltage increases to over the reference voltage (tend to 1V), it indicates that the air fuel mixture is too rich.
If the heated oxygen sensor voltage decreases to below the reference voltage (tend to 0mV), it indicates that the air fuel mixture is
too lean.
•
ECM provides a signal through ECM harness connector EN01 terminal No.29 to post-catalytic oxygen sensor wiring harness
connector EN03 terminal No.4.
•
ECM provides a low reference voltage through ECM harness connector EN01 terminal No.39 to pre-catalytic oxygen sensor
wiring harness connector EN03 terminal No.3.
2. Conditions For Setting DTC and The Fault Location:
DTC Code
DTC Detection Strategy
Conditions For Setting The DTC
(Control Strategy)
Fault Locations
P0136
P0137
Short to Ground When Cold
1. Post-Catalytic oxygen sensor
voltage is less than 0.06 V.
2. Post-Catalytic oxygen sensor
reaches the normal working
temperature.
1. Sensor Circuit
2. Sensor
3. Mixture Too Rich
4. Mixture Too Lean
2-116
Control System JL4G18-D
Engine
EC718/EC718RV EC715/EC715RV 10/2009
Содержание EC715 2009
Страница 4: ......
Страница 312: ...2 3 4 5 Fuel Injectors FE02 2022b 2 230 Fuel System JL4G18 D Engine EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 330: ...Next Step 10 End 2 248 Fuel System JL4G18 D Engine EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 516: ...2 7 4 3 Front Muffler Assembly FE02 2032b 2 434 Exhaust System JL4G18 D Engine EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 517: ...2 7 4 4 Rear Muffler Assembly FE02 2033b Engine Exhaust System JL4G18 D 2 435 EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 519: ...2 7 4 6 Front Muffler Heat Shield FE02 2034b Engine Exhaust System JL4G18 D 2 437 EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1164: ......
Страница 1257: ...Next Step 9 System normal Brake System ABS TCS EBD ESP 6 93 EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1278: ...6 7 8 Special Tools and Equipment 6 7 8 1 Trigger Tool FE06 1007b 6 114 TPMS Brake System EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1412: ...9 2 6 4 Warning lamp Always On Schematic 9 14 Airbag System Safety Protection Device EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1703: ...Rear Wiper Motor Hatchback FE11 2009c Body Electric Wipers Washers System 11 219 EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1704: ...Washer Fluid Tank Sedan FE11 2010b 11 220 Wipers Washers System Body Electric EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1705: ...Washer Fluid Tank Hatchback FE11 2010c Body Electric Wipers Washers System 11 221 EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1706: ...Rear Washer Nozzle Hatchback FE11 2011c 11 222 Wipers Washers System Body Electric EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1734: ...Next Step 13 System normal 11 250 Wipers Washers System Body Electric EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1860: ...BCM FE11 0803b 11 376 Remote Anti theft System Body Electric EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1951: ...Reverse Radar Control Module FE11 1207b Body Electric Reverse Radar 11 467 EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 1954: ...16 R Control Module Power Supply Gear In Reverse 12 V 11 470 Reverse Radar Body Electric EC718 EC718RV EC715 EC715RV 10 2009 ...
Страница 2008: ......
Страница 2104: ...FE12 0085c 2 Install the hatchback seal 12 96 Interior Trim Body Sheet Metal and Painting EC718 EC718RV EC715 EC715RV 10 2009 ...