2002 CHEVROLET AVEO sensor

Fig. 307: OSS Sensor & Bolts
Courtesy of GENERAL MOTORS CORP.
127. Install the output shaft speed (OSS) sensor.
Tighten: Ti
ghten the bolt to 7.4 N.m (65 lb in).

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2006 TRANSMISSION Automatic Transaxle - Aisin (81-40LE) - Introduction (2 Of 2) - Aveo
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Fig. 308: ISS Sensor & Bolts
Courtesy of GENERAL MOTORS CORP.
128. Install the No. 1 breather plug.
129. Install the input shaft speed (ISS) sensor with the bolt.
Tighten: Tighten the bolt to the 5.4 N.m (48 lb in).

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2006 TRANSMISSION Automatic Transaxle - Aisin (81-40LE) - Introduction (2 Of 2) - Aveo
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ELECTRONIC COMPONENT DESCRIPTION
Transmission Control Module (TCM)
The transmission control module (TCM) primarily controls shift points and lockup engagement. It is located on
the driver side under the instrument panel.
The transmission is controlled by an electronic shift system. The TCM processes input signals. From the
information received, the TCM controls the transmission hydraulic system.
The electronic shift system consists of the following components.
TCM
Shift solenoids (SS1 and SS2)
Pressure control solenoid (PCS)
Lockup solenoid
Input shaft speed (ISS) sensor
Output shaft speed (OSS) sensor
Transmission fluid temperature (TFT) sensor
Park/neutral position (PNP) switch
Park/Neutral Position (PNP) Switch
The PNP switch transmits the information which range includes the shift lever of the automatic transmission
(A/T) to the starter and TCM.
It is possible for the PNP switch to start an engine in only park (P) and neutral (N) prevention of reckless
driving
The PNP switch makes the backup lamp turn on when reversing.
It is used for PNP switch to shift control.
The PNP switch transmits the information by combination of starter and reverse circuit to the vehicle side
directl
y without TCM.

2006 Chevrolet Aveo
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Fig. 455: Pressure Control Solenoid (PCS)
Courtesy of GENERAL MOTORS CORP.
Transmission Fluid Temperature (TFT) Sensor
The TFT sensor (1) provides the TCM with information on the transmission fluid temperature.
The TCM uses information from the TFT sensor to calculate the gear shift points and to engage the torque
converter loc
k-up function.

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Fig. 456: Transmission Fluid Temperature (TFT) Sensor
Courtesy of GENERAL MOTORS CORP.
Input Shaft Speed (ISS) Sensor
The ISS sensor (1) is located on the upper position of the transaxle and detects A/T input speed from the
rotation number of the direct clutch drum. They transmit to TCM as a signal.

2006 Chevrolet Aveo
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Fig. 457: Input Shaft Speed (ISS) Sensor
Courtesy of GENERAL MOTORS CORP.
Output Shaft Speed (ISS) Sensor
The OSS sensor (1) is located on the upper position of the transaxle and detects the vehicle speed from the
rotation number of the differential
gear.

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Fig. 458: Output Shaft Speed (ISS) Sensor
Courtesy of GENERAL MOTORS CORP.
Shift Control
When the AFT is below the specified 15°C (59°F), 4th up-shift is prevented.
SPECIAL TOOLS AND EQUIPMENT
SPECIAL TOOLS
Special Tools
IllustrationTool Number/ Description

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Multifunction Alarm Module
Connector Part InformationKET MG 611336
26-Way F PCB Connector (WH)
PinWire ColorCircuit No.Function
1WH30Fuel Level Sensor Signal
2D-GN/WH817Vehicle Speed Signal
3WH121Engine Speed Signal
4WH135Engine Coolant Temperature (ECT) Sensor
Gauge Signal
5PU172Low Fuel Indicator Control
6BN33Brake Warning Indicator Control
7WH15Right Turn Signal Lamps Supply Voltage
8GY/D-GN11Headlamp High Beam Supply Voltage
9D-BU14Left Turn Signal Lamps Supply Voltage
10OG640Battery Positive Voltage
11PK239Ignition 1 Voltage
12BN/WH309Right Park Lamp Supply Voltage
13
BK450Ground (w/o Dimming)
L-GN/RD230Instrument Panel Lamps Dimming Control
(w/Dimming)
14BK450Ground
15-16--Not Used
17D-BU25Charge Indicator Control/Charge Indicator
Signal (w/o Tach)
18BN/BK419Malfunction Indicator Lamp (MIL) Control
(w/o Tach)
19D-G31Oil Pressure Indicator Control (w/o Tach)
20BK/WH238Seat Belt Switch - Driver (w/o Tach)
21WH629Daytime Running Lamp (DRL) On Indicator
Control (w/o Tach)
22L-BU122Rear Fog Lamp Supply Voltage (w/o Tach)
23D-GN/WH358Air Bag Indicator Control (w/o Tach)
24OG640Battery Positive Voltage (w/o Tach)
25D-GN/WH157Courtesy Lamp Control (w/o Tach)
26BK450Ground

2005 Chevrolet Aveo
2005 ACCESSORIES & EQUIPMENT Instrument Panel, Gages, & Console - Aveo
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