Here is an attempt at a paste of the TIS for P0137 in case it helps.
I hope it works! lol
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2004 Chevrolet Aveo |
Aveo (VIN S)
Service Manual | Document ID: 1483995
DTC P0137
Circuit Description
The engine control module (ECM) supplies a voltage near 450 mV between the
heated oxygen sensor (HO2S) high signal circuit and the low reference circuit.
The HO2S varies the voltage over a range from about 1,000 mV when the exhaust is
rich, down through about 10 mV when the exhaust is lean.
The ECM monitors and stores the HO2S voltage information. The ECM evaluates
the HO2S voltage samples in order to determine the amount of time that the HO2S
voltage was out of range. The ECM compares the stored HO2S voltage samples taken
within each sample period and determines if the majority of the samples are out
of the operating range.
The ECM monitors the HO2S voltage for being fixed below a predetermined
voltage. If the ECM detects the voltage is too low, this DTC sets.
The HO2S utilizes the following circuits:
• |
A low reference circuit |
• |
An ignition 1 voltage circuit |
• |
A heater control circuit |
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC P0137 HO2S Circuit Low Voltage Sensor 2
Conditions for Running the DTC
Closed Loop Test
• |
DTCs P0106, P0107, P0108, P0117, P0118, P0122, P0123, P0141,
P0171, P0172, P0201-P0204, P0300, P0336, P0337, P0351, P0352, P0401, P0402,
P0404, P0405, P0406, P0441, P0443, P0488, P0502, P0506, and P0507 are not
set. |
• |
The engine coolant temperature is more than 60°C
(140°F). |
• |
The ignition 1 voltage is more than
10 volts. |
• |
The calculated airflow is more than
9 g/s. |
• |
The fuel system is in closed
loop. |
• |
DTC P0137 runs continuously once the above conditions are met for
3 seconds. |
Power Enrichment Test
• |
DTCs P0106, P0107, P0108, P0117, P0118, P0122, P0123, P0141,
P0171, P0172, P0201-P0204, P0300, P0336, P0337, P0351, P0352, P0401, P0402,
P0404, P0405, P0406, P0441, P0443, P0488, P0502, P0506, and P0507 are not
set. |
• |
The engine coolant temperature is more than 60°C
(140°F). |
• |
The ignition 1 voltage is more than
10 volts. |
• |
The air fuel ratio is less than or equal to
13.5:1. |
• |
DTC P0137 runs continuously once the above conditions are met for
3 seconds. |
Conditions for Setting the DTC
Closed Loop Test
• |
The ECM detects that the HO2S 2 voltage is less than
52 mV. |
• |
The condition exists for more than
4 minutes. |
Power Enrichment Test
• |
The ECM detects that the HO2S 2 voltage is less than 35 mV during
power enrichment. |
• |
The condition exists for more than
11 seconds. |
Action Taken When the DTC Sets
• |
The control module illuminates the malfunction indicator lamp
(MIL) when the diagnostic runs and fails. |
• |
The control module records the operating conditions at the time
the diagnostic fails. The control module stores this information in the Freeze
Frame/Failure Records. |
Conditions for Clearing the MIL/DTC
• |
The control module turns OFF the malfunction indicator lamp (MIL)
after 3 consecutive ignition cycles that the diagnostic runs and does not
fail. |
• |
A current DTC, Last Test Failed, clears when the diagnostic runs
and passes. |
• |
A history DTC clears after 40 consecutive warm-up cycles, if no
failures are reported by this or any other emission related
diagnostic. |
• |
Clear the MIL and the DTC with a scan
tool. |
[TABLE="width: 95%"]
[TH="align: center"]Step
[/TH]
[TH="align: center"]Action
[/TH]
[TH="align: center"]Values
[/TH]
[TH="align: center"]Yes
[/TH]
[TH="align: center"]No
[/TH]
|
[TD="colspan: 5, align: left"]Schematic Reference: Engine
Controls Schematics
Connector End View Reference: Engine
Control Module Connector End Views or Engine
Controls Connector End Views
[/TD]
|
[TD="align: center"]1
[/TD]
[TD="align: left"]Did you perform the Diagnostic System Check - Engine Controls?
[/TD]
[TD="align: center"]--
[/TD]
[TD="align: center"]Go to Step 2
[/TD]
[TD="align: center"]Go to Diagnostic
System Check - Engine Controls
[/TD]
|
[TD="align: center"]2
[/TD]
- Start the engine.
- Allow the engine to reach the normal operating temperature.
- Operate the engine above 1,200 RPM for 30 seconds and then allow the
engine to idle. - Observe the HO2S 2 voltage parameter with a scan tool.
Is the voltage less than the specified value? |
[TD="align: center"]52 mV
[/TD]
[TD="align: center"]Go to Step 4
[/TD]
[TD="align: center"]Go to Step 3
[/TD]
[TD="align: center"]3
[/TD]
[TD="align: left"]
- Observe the Freeze Frame/Failure Records for this DTC.
- Turn OFF the ignition for 30 seconds.
- Start the engine.
- Operate the vehicle within the Conditions for Running the DTC. You
may also operate the vehicle within the conditions that you observed from the
Freeze Frame/Failure Records.
Did the DTC fail this ignition?[/TD]
[TD="align: center"]--
[/TD]
[TD="align: center"]Go to Step 4
[/TD]
[TD="align: center"]Go to Intermittent
Conditions
[/TD]
|
[TD="align: center"]4
[/TD]
- Turn OFF the ignition.
- Disconnect the heated oxygen sensor (HO2S) 2.
- Start the engine.
- Observe the HO2S 2 voltage parameter with a scan tool.
Is the voltage within the specified range? |
[TD="align: center"]350-550 mV
[/TD]
[TD="align: center"]Go to Step 6
[/TD]
[TD="align: center"]Go to Step 5
[/TD]
[TD="align: center"]5
[/TD]
[TD="align: left"]Test the signal circuit of the HO2S 2 for a short to ground. Refer to Circuit
Testing and Wiring
Repairs in Wiring Systems.
Did you find and correct the condition?
[/TD]
[TD="align: center"]--
[/TD]
[TD="align: center"]Go to Step 11
[/TD]
[TD="align: center"]Go to Step 8
[/TD]
|
[TR]
[TD="align: center"]6
[/TD]
Test or inspect for the following conditions:
|
Test for an intermittent and poor connections at the harness connector of the
HO2S 2. Refer to Testing
for Intermittent Conditions and Poor Connections and Connector
Repairs in Wiring Systems.
Did you find and correct the condition?
|
[TD="align: center"]--
[/TD]
[TD="align: center"]Go to Step 11
[/TD]
[TD="align: center"]Go to Step 9
[/TD]
[TD="align: center"]8
[/TD]
Test for an intermittent and poor connection at the engine control module
(ECM). Refer to Testing
for Intermittent Conditions and Poor Connections and Repairing
Connector Terminals in Wiring Systems.
Did you find and correct the condition?
|
[TD="align: center"]--
[/TD]
[TD="align: center"]Go to Step 11
[/TD]
[TD="align: center"]Go to Step 10
[/TD]
[TD="align: center"]9
[/TD]
Replace the HO2S 2. Refer to Heated
Oxygen Sensor 2 Replacement .
Did you complete the replacement?
|
[TD="align: center"]--
[/TD]
[TD="align: center"]Go to Step 11
[/TD]
[TD="align: center"]--
[/TD]
[TD="align: center"]10
[/TD]
Replace the ECM. Refer to Engine
Control Module Replacement .
Did you complete the replacement?
|
[TD="align: center"]--
[/TD]
[TD="align: center"]Go to Step 11
[/TD]
[TD="align: center"]--
[/TD]
[TD="align: center"]11
[/TD]
- Clear the DTCs with a scan tool.
- Turn OFF the ignition for 30 seconds.
- Start the engine.
- Operate the vehicle within the Conditions for Running the DTC. You
may also operate the vehicle within the conditions that you observed from the
Freeze Frame/Failure Records.
Did the DTC fail this ignition? |
[TD="align: center"]--
[/TD]
[TD="align: center"]Go to Step 2
[/TD]
[TD="align: center"]Go to Step 12
[/TD]
[TD="align: center"]12
[/TD]
Observe the Capture Info with a scan tool.
Are there any DTCs that have not been diagnosed?
|
[TD="align: center"]--
[/TD]
[TD="align: center"]Go to Diagnostic
Trouble Code (DTC) List
[/TD]
[TD="align: center"]System OK
[/TD]