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DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSCHEVROLET2008AVEO LT, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS AND FUEL - 1.6L - INTRODUCTION (2 OF 2)COMPONENT LOCATORENGINE CONTROLS CONNECTOR END VIEWS (NOTCHBACK)

2008 Chevrolet Aveo LT, Automatic

Engine Controls Connector End Views (Notchback)

2008 Chevrolet Aveo LT, AutomaticSECTION Engine Controls Connector End Views (Notchback)

Accelerator Pedal Position (APP) Sensor (MT34)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		MG 651044 6-Way F
Pin	Wire Color	Circuit No.	Function
1	D-BU	-	APP Sensor 2 Signal
2	BN	-	Low Reference
3	GY	-	5-Volt Reference 2
4	GY	-	5-Volt Reference 1
5	OG/BK	-	Low Reference
6	L-BU	-	APP Sensor 1 Signal

Camshaft Position (CMP) Sensor

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		AMP 85205-1 3-Way F JR Power Timer 3P Housing Assembly (BK)
Pin	Wire Color	Circuit No.	Function
1	PK (MR140)	-	Ignition 1 Voltage
1	OG (MT34)	-	Ignition 1 Voltage
2	BK/WH	-	Ground
3	L-BU/BK	-	Camshaft Position (CMP) Sensor Signal

Clutch Pedal Position (CPP) Switch (MT34)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		KUM PB 625-04027 4-Way F NMWP 02F-B Assembly (BK)
Pin	Wire Color	Circuit No.	Function
1	YE	-	Ignition 1 Voltage
2	BK	-	Ground
3	PU	-	Crank Signal
4	L-BU	-	Crank Signal

Crankshaft Position Sensor (CKP) Sensor

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		AMP 85205-1 3-Way F JR Power Timer 3P Housing Assembly (BK)
Pin	Wire Color	Circuit No.	Function
1	D-BU/WH	-	Crankshaft Position (CKP) Sensor Signal
2	YE/BK	-	Low Reference
3	BK (MR140)	-	Ground
3	BK/WH (MT34)	-	Ground

Electronic Throttle Control (MT34)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		PED 15326835 8-Way F Metri-Pack 150 Series Sealed (BK)
Pin	Wire Color	Circuit No.	Function
1	PK	-	5-Volt Reference
2	PU	-	TPS 2 Signal
3	L-BU	-	TPS 1 Signal
4	D-BU	-	Low Reference
5	BN	-	ETC (-)
6-7	-	-	Not Used
8	BN	-	ETC (+)

Engine Coolant Temperature (ECT) Sensor

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		PED 12040753 2-Way F Metri-Pack 150 Series Sealed, Pull To Seat (BK)
Pin	Wire Color	Circuit No.	Function
A	YE	-	Engine Coolant Temperature (ECT) Sensor Signal
B	BN	-	Low Reference

Evaporative Emission (EVAP) Canister Purge Solenoid Valve

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		PED 12052643 2-Way F Metri-Pack 150 Series Sealed (RD)
Pin	Wire Color	Circuit No.	Function
A	BN (MR140)	-	EVAP Canister Purge Valve Solenoid Control
A	WH (MT34)	-	EVAP Canister Purge Valve Solenoid Control
B	PK (MR140)	-	Ignition 1 Voltage
B	OG (MT34)	-	Ignition 1 Voltage

Evaporative Emission (EVAP) Canister Vent Solenoid Valve (MT34)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		PED 12052643 2-Way F Metri-Pack 150 Series Sealed (RD)
Pin	Wire Color	Circuit No.	Function
A	YE	-	EVAP Canister Vent Valve Solenoid Control
B	PK	-	Ignition 1 Voltage

Exhaust Gas Recirculation (EGR) Valve

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		PED 12110790 5-Way F Metri-Pack 150 Series Sealed (GY)
Pin	Wire Color	Circuit No.	Function
A	WH	-	Exhaust Gas Recirculation Valve Control
B	BN/WH	-	Low Reference
C	GY	-	Exhaust Gas Recirculation (EGR) Valve Position Sensor Signal
D	PU	-	5-Volt Reference
E	PK (MR140)	-	Ignition 1 Voltage
E	OG (MT34)	-	Ignition 1 Voltage

Fuel Injector 1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		AMP 368468-1 2-Way F Injector Plug Assembly (BK)
Pin	Wire Color	Circuit No.	Function
1	PU (MR140)	-	Ignition 1 Voltage
1	OG/BK (MT34)	-	Ignition 1 Voltage
2	L-BU/WH (MR140)	-	Fuel Injector 1 Control
2	BU/WH (MT34)	-	Fuel Injector 1 Control

Fuel Injector 2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		AMP 368468-1 2-Way F Injector Plug Assembly (BK)
Pin	Wire Color	Circuit No.	Function
1	PU (MR140)	-	Ignition 1 Voltage
1	OG/BK (MT34)	-	Ignition 1 Voltage
2	BN (MR140)	-	Fuel Injector 2 Control
2	PK/BK (MT34)	-	Fuel Injector 2 Control

Fuel Injector 3

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		AMP 368468-1 2-Way F Injector Plug Assembly (BK)
Pin	Wire Color	Circuit No.	Function
1	PU (MR140)	-	Ignition 1 Voltage
1	OG/BK (MT34)	-	Ignition 1 Voltage
2	PU/D-BU (MR140)	-	Fuel Injector 3 Control
2	L-GN/BK (MT34)	-	Fuel Injector 3 Control

Fuel Injector 4

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		AMP 368468-1 2-Way F Injector Plug Assembly (BK)
Pin	Wire Color	Circuit No.	Function
1	PU (MR140)	-	Ignition 1 Voltage
1	OG/BK (MT34)	-	Ignition 1 Voltage
2	L-GN/D-BU (MR140)	-	Fuel Injector 4 Control
2	BN (MT34)	-	Fuel Injector 4 Control

Fuel Pump/Sender

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		AMP 36159-1 6-Way F Fuel Pump 6 POS Connector Assembly (BN)
Pin	Wire Color	Circuit No.	Function
1	BU	-	Fuel Level Sensor Signal
2	BK	-	Ground
3	BN	-	Fuel Pump Supply Voltage
4	PK	-	Ignition Voltage
5	YE	-	Low Fuel Indicator Control
6	L-BU	-	Low Reference

Fuel Tank Pressure (FTP) Sensor (MT34)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		KET MG 620395 3-Way M Series Sealed (WH)
Pin	Wire Color	Circuit No.	Function
1	OG/BK	-	Low Reference
2	BN/BK	-	Fuel Tank Pressure Sensor Signal
3	RD/WH	-	5-Volt Reference

Heated Oxygen Sensor (HO2S) 1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		PED 12162144 4-Way F Metri-Pack 150 Series Sealed (BK)
Pin	Wire Color	Circuit No.	Function
A	GN/WH	-	Heated Oxygen Sensor (HO2S) 1 Low Reference
B	BN	-	Heated Oxygen Sensor (HO2S) 1 Signal
C	BK	-	Ground
D	PK	-	Ignition 1 Voltage

Heated Oxygen Sensor (HO2S) 1 (EURO IV)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		PED 12162144 4-Way F Metri-Pack 150 Series Sealed (BK)
Pin	Wire Color	Circuit No.	Function
A	BN	-	Heated Oxygen Sensor (HO2S) 1 Signal
B	BK	-	Ground
C	GN/WH	-	Heated Oxygen Sensor (HO2S) 1 Low Reference
D	PK	-	Ignition 1 Voltage

Heated Oxygen Sensor (HO2S) 1 (MT34)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		KUM PB 625-04027 4-Way F NMWP 02F-B Assembly (BK)
Pin	Wire Color	Circuit No.	Function
1	BN	-	Heated Oxygen Sensor (HO2S) 1 Signal
2	GY	-	Heated Oxygen Sensor (HO2S) 1 Heater Control
3	D-GN/WH	-	Heated Oxygen Sensor (HO2S) 1 Low Reference
4	OG	-	Ignition 1 Voltage

Heated Oxygen Sensor (HO2S) 2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		PED 12162144 4-Way F Metri-Pack 150 Series Sealed (BK)
Pin	Wire Color	Circuit No.	Function
A	PU	-	Heated Oxygen Sensor (HO2S) 2 Low Reference
B	BN	-	Heated Oxygen Sensor (HO2S) 2 Signal
C	BN	-	Heated Oxygen Sensor (HO2S) 2 Heater Control
D	OG	-	Ignition 1 Voltage

Heated Oxygen Sensor (HO2S) 2 (EURO IV)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		PED 12162144 4-Way F Metri-Pack 150 Series Sealed (BK)
Pin	Wire Color	Circuit No.	Function
A	BN	-	Heated Oxygen Sensor (HO2S) 2 Signal
B	BN	-	Heated Oxygen Sensor (HO2S) 2 Heater Control
C	PU	-	Heated Oxygen Sensor (HO2S) 2 Low Reference
D	OG	-	Ignition 1 Voltage

Heated Oxygen Sensor (HO2S) 2 (MT34)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		KUM PB 625-04027 4-Way F NMWP 02F-B Assembly (BK)
Pin	Wire Color	Circuit No.	Function
1	BN	-	Heated Oxygen Sensor (HO2S) 1 Signal
2	BN	-	Heated Oxygen Sensor (HO2S) 1 Heater Control
3	PU	-	Heated Oxygen Sensor (HO2S) 1 Low Reference
4	OG	-	Ignition 1 Voltage

Idle Air Control (IAC) Valve (MR140)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		PED 12040754 4-Way Metri-Pack 150 Series (BK)
Pin	Wire Color	Circuit No.	Function
A	PU/BU	-	Idle Air Control (IAC) B Low Control
B	D-BU	-	Idle Air Control (IAC) B High Control
C	L-GN/BK	-	Idle Air Control (IAC) A Low Control
D	GN	-	Idle Air Control (IAC) A High Control

Ignition Coil (IC) Module

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		PED 12059595 3-Way F Metri-Pack 150 Series Sealed (BK)
Pin	Wire Color	Circuit No.	Function
A	OG (MR140)	-	Ignition Coil (IC) Timing Control 2 and 3
A	WH (MT34)	-	Ignition Coil (IC) Timing Control 2 and 3
B	PK (MR140)	-	Ignition 1 Voltage
B	OG/BK (MT34)	-	Ignition 1 Voltage
C	OG	-	Ignition Coil (IC) Timing Control 1 and 4

Intake Air Temperature (IAT) Sensor

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		AMP 85202-1 2-Way JR Power Timer 2P Housing Assembly (BK)
Pin	Wire Color	Circuit No.	Function
1	BN	-	Intake Air Temperature (IAT) Sensor Signal
2	BN	-	Low Reference

Intake Manifold Tuning Valve

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		AMP 174352-2 2-Way F Econoseal J Mark II + Connector Plug Housing (BK)
Pin	Wire Color	Circuit No.	Function
1	PK (MR140)	-	Ignition 1 Voltage
1	OG (MT34)	-	Ignition 1 Voltage
2	YE	-	Intake Manifold Tuning Valve Solenoid Control

Intake Manifold Tuning Valve Position Sensor (MT34)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		AMP 368215-1 3-Way JPT 3P Assembly for Knock Sensor (GY)
Pin	Wire Color	Circuit No.	Function
1	PU	-	5-Volt Reference
2	D-BU	-	Intake Manifold Tuning Valve Position Sensor Signal
3	BN/WH	-	Low Reference

Knock Sensor (KS)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		AMP 85202-1 2-Way JR Power Timer 2P Housing Assembly (BK)
Pin	Wire Color	Circuit No.	Function
1	D-BU	-	Knock Sensor (KS) Signal
2	L-BU	-	Low Reference

Manifold Absolute Pressure (MAP) Sensor

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		PED 12059595 3-Way F Metri-Pack 150 Series Sealed (BK)
Pin	Wire Color	Circuit No.	Function
A	BN/WH	-	Low Reference
B	L-GN	-	Manifold Absolute Pressure Sensor Signal
C	PU	-	5-Volt Reference

Octane Selector Switch (MR140)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		KET MG 620395 3-Way M Series Sealed (WH)
Pin	Wire Color	Circuit No.	Function
1	-	-	Not Used
2	BK	-	Ground
3	D-GN	-	Octane Selection Signal

Rough Road Sensor

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		PED 12162185 3-Way F Metri-Pack 150.2 Series Sealed, Pull To Seat (BK)
Pin	Wire Color	Circuit No.	Function
A	OG/BK	-	5-Volt Reference
B	D-GN	-	Rough Road Sensor Signal
C	L-BU	-	Low Reference

Throttle Position (TP) Sensor (MR140)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		PED 12078090 3-Way F Metri-Pack 150 Series (BK)
Pin	Wire Color	Circuit No.	Function
A	PK	-	5-Volt Reference
B	BN	-	Low Reference
C	L-BU	-	Throttle Position (TP) Sensor Signal

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.