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Engine Controls - Tests W/codes - 3.5L: Overview Eagle Vision I

Testing & Diagnostics 17 illustrations ~1177 words

CONNECTOR IDENTIFICATION

ConnectorSee
Camshaft Position Sensor(Scheme 25)
Crankshaft Position Sensor(Scheme 26)
Distributor Connector (Harness Side)(Scheme 27)
Engine Coolant Temperature (ECT) Sensor(Scheme 28)
Evaporative Purge Solenoid(Scheme 29)
Flexible Fuel Sensor(Scheme 30)
Fuel Pump(Scheme 31)
Idle Air Control (IAC) Motor(Scheme 32)
Ignition Coil(Scheme 33)
Intake Air Temperature (IAT) Sensor(Scheme 34)
Knock Sensor(Scheme 35)
Manifold Absolute Pressure (MAP) Sensor(Scheme 36)
Manifold Tuning Valve (MTV) Solenoid(Scheme 37)
Oxygen Sensor(Scheme 38)
Powertrain Control Module (PCM)(Scheme 39)
Torque Converter Clutch Solenoid(Scheme 40)
Throttle Position Sensor (TPS)(Scheme 41)

CONNECTOR IDENTIFICATION DIRECTORY

TerminalWire ColorFunction
1Orange8-Volt Supply
2Black/Light BlueGround
3Tan/YellowSignal

CAMSHAFT POSITION SENSOR CONNECTOR TERMINAL ID

Scheme 25

Scheme 25
Scheme 25
TerminalWire ColorFunction
1Orange8-Volt Supply
2Black/Light BlueGround
3Gray/BlackSignal

CRANKSHAFT POSITION SENSOR CONNECTOR TERMINAL ID

Scheme 26

Scheme 26
Scheme 26
TerminalWire ColorFunction
1Gray/BlackCrankshaft Signal
2Tan/YellowCamshaft Signal
3Orange8-Volt Supply
4Black/Light BlueGround

DISTRIBUTOR CONNECTOR TERMINAL ID

Scheme 27

Scheme 27
Scheme 27
TerminalWire ColorFunction
1Tan/BlackSignal
2Black/Light BlueGround

ENGINE TEMP COOLANT (ECT) SENSOR CONNECTOR TERMINAL ID

Scheme 28

Scheme 28
Scheme 28
TerminalWire ColorFunction
1Pink/BlackControl
2Light Green/BlackIgnition 12-Volt Feed

EVAPORATIVE PURGE SOLENOID CONNECTOR TERMINAL ID

Scheme 29

Scheme 29
Scheme 29
TerminalWire ColorFunction
1Yellow/WhiteSignal
2Black/Light BlueGround
3Orange8-Volt Supply

FLEXIBLE FUEL SENSOR CONNECTOR TERMINAL ID

Scheme 30

Scheme 30
Scheme 30
TerminalWire ColorFunction
1Dark Green/BlackFuel Pump Relay Output
2Dark BlueFuel Level Sense
3Not Used
4Black/TanSending Unit Ground
5BlackFuel Pump Ground

FUEL PUMP CONNECTOR TERMINAL ID

Scheme 31

Scheme 31
Scheme 31
TerminalWire ColorFunction
1Gray/RedIAC Driver No. 1
2Yellow/BlackIAC Driver No. 2
3Brown/WhiteIAC Driver No. 3
4Violet/BlackIAC Driver No. 4

IDLE AIR CONTROL (IAC) MOTOR CONNECTOR TERMINAL ID

Scheme 32

Scheme 32
Scheme 32
TerminalWire ColorFunction
1RedIgnition Coil Driver No. 3
2BlackIgnition Coil Driver No. 1
3WhiteIgnition Coil Driver No. 2
4Dark Green/OrangeASD Relay Output

IGNITION COIL CONNECTOR TERMINAL ID

Scheme 33

Scheme 33
Scheme 33
TerminalWire ColorFunction
1Black/RedSignal
2Black/Light BlueGround

INTAKE AIR TEMPERATURE SENSOR CONNECTOR TERMINAL ID

Scheme 34

Scheme 34
Scheme 34
TerminalWire ColorFunction
1Black/Light GreenSignal No. 1
2Gray/BlackSignal No. 2

KNOCK SENSOR CONNECTOR TERMINAL ID

Scheme 35

Scheme 35
Scheme 35
TerminalWire ColorFunction
1Black/Light BlueGround
2Dark Green/RedSignal
3Violet/White5-Volt Supply

MAP SENSOR CONNECTOR TERMINAL ID

Scheme 36

Scheme 36
Scheme 36
TerminalWire ColorFunction
1Violet/WhiteControl
2Light Green/BlackIgnition 12-Volt Feed

MANIFOLD TUNING VALVE SOLENOID CONNECTOR TERMINAL ID

Scheme 37

Scheme 37
Scheme 37
TerminalWire ColorFunction
1Black/Light BlueSensor Ground
2(1) Black/Dark GreenSignal
3BlackHeater Ground
4Light Green/BlackHeater Feed
(1) Tan/White on right oxygen sensor connector.
(1)Tan/White on right oxygen sensor connector.

OXYGEN SENSOR CONNECTOR TERMINAL ID

Scheme 38

Scheme 38
Scheme 38

Scheme 39

Scheme 39
Scheme 39
TerminalWire ColorFunction
1**Not Used
2Dark BlueIgnition 12-Volt Feed
3Orange/BlackControl

TORQUE CONVERTER CLUTCH SOLENOID CONNECTOR TERMINAL ID

Scheme 40

Scheme 40
Scheme 40
TerminalWire ColorFunction
1Black/Light BlueGround
2Orange/Dark BlueSignal
3Violet/White5-Volt Supply

THROTTLE POSITION SENSOR (TPS) CONNECTOR TERMINAL ID

Scheme 41

Scheme 41
Scheme 41
CAUTIONWhen battery is disconnected, vehicle computer and energy systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in the GENERAL INFORMATION before disconnecting battery.

TEST NTC-4A - CHECKING COOLANT SENSOR CALIBRATION & RADIATOR FAN OPERATION

Note. After each repair, perform TEST VER-2 .

  1. Start engine. Allow engine to reach normal operating temperature. Using DRB, read Engine Coolant Temperature (ECT) sensor value. If ECT sensor value does not increase smoothly, replace ECT sensor. If ECT sensor value increases smoothly, go to next step.
  2. If coolant temperature reaches 180°F (82°C) or more, replace ECT sensor. If coolant temperature does not reach 180°F (82°C), or more, go to next step.
  3. Run engine until radiator fan operates or temperature reaches 220°F (104°C). If cooling fan does not operate, repair cooling fan as necessary. See «SPECIFICATIONS»(ref-10823) article in the ENGINE PERFORMANCE section and ENGINE COOLING FAN article in the ENGINE COOLING section. If cooling fan operates, test is complete.

TEST NTC-9A - CHECKING SOLENOID OPERATIONS

Note. For connector terminal identification, see CONNECTOR IDENTIFICATION DIRECTORY TABLE . For wiring diagram, see WIRING DIAGRAMS section. After each repair, perform TEST VER-2 .

  1. Using DRB, actuate purge solenoid. While touching top of canister purge solenoid, feel for operation. If purge solenoid does not operate, replace canister purge solenoid. If purge solenoid operates, go to next step.
  2. Actuate EGR solenoid. While touching top of EGR valve, feel for operation. If EGR solenoid does not operate, replace EGR solenoid. If EGR solenoid operates, go to next step. NOTE: A break in step numbering sequence occurs at this point. Procedure skips from step 2) to step 4). No test procedures have been omitted.
  3. Using DRB, actuate Manifold Tuning Valve (MTV) solenoid. While touching top of MTV solenoid, feel for operation. MTV solenoid is located on right front strut tower. If MTV solenoid does not operate, replace MTV solenoid. If MTV solenoid operates, go to next step.
  4. Start engine and let idle for one minute to build up vacuum. Turn engine off. Turn ignition on. Actuate MTV valve. If MTV valve opens and closes fully when actuated, MTV solenoid and valve are operating properly. Test is complete. If MTV valve does not open and close fully when actuated, go to next step.
  5. Inspect MTV valve vacuum hose for leaks. Repair as required. If no vacuum leaks are observed, replace MTV valve.

TEST NS-7A - INSPECTING IDLE AIR CONTROL MOTOR OPERATION

Note. For connector terminal identification, see CONNECTOR IDENTIFICATION DIRECTORY TABLE . For wiring diagram, see WIRING DIAGRAMS section. After each repair, perform TEST VER-1 .

  1. Disconnect Idle Air Control (IAC) motor connector. Turn ignition on. Using DRB, actuate IAC motor. Using DRB in voltmeter mode, check voltage on IAC motor connector terminal No. 1 (Gray/Red wire). If voltage is less than one volt, go to «TEST NS-7B»(ref-10832-S36504291022000111000000) . If voltage is more than one volt, go to next step.
  2. Check voltage on IAC motor connector terminal No. 3 (Brown/White wire). If voltage is less than one volt, go to «TEST NS-7C»(ref-10832-S13070638642000111000000) . If voltage is more than one volt, go to next step.
  3. Check voltage on IAC motor connector terminal No. 4 (Violet/Black wire). If voltage is less than one volt, go to «TEST NS-7D»(ref-10832-S05566671312000111000000) . If voltage is more than one volt, go to next step.
  4. Check voltage on IAC motor connector terminal No. 2 (Yellow/Black wire). If voltage is less than one volt, go to «TEST NS-7E»(ref-10832-S14361615462000111000000) . If voltage is more than one volt, turn ignition off. Go to next step.
  5. Remove IAC motor from throttle body. Reconnect IAC motor connector. Using DRB, actuate IAC motor connector. If IAC motor tip moves in and out, go to «TEST NS-8A»(ref-10832-S33600381692000111000000) . If IAC motor tip does not move in and out, replace IAC motor.

TEST NS-7B - INSPECTING IDLE AIR CONTROL MOTOR OPERATION

Note. For connector terminal identification, see CONNECTOR IDENTIFICATION DIRECTORY TABLE . For wiring diagram, see WIRING DIAGRAMS section. After each repair, perform TEST VER-1 .

  1. Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. PCM is located under air cleaner. Inspect all terminals. Repair as required. If PCM terminals are okay, go to next step.
  2. Using an external ohmmeter, check resistance of Gray/Red wire between IAC motor connector terminal No. 1 and PCM connector terminal No. 39. If resistance is less than 5 ohms, replace PCM. If resistance is more than 5 ohms, repair open Gray/Red wire.

TEST NS-7C - INSPECTING IDLE AIR CONTROL MOTOR OPERATION

Note. For connector terminal identification, see CONNECTOR IDENTIFICATION DIRECTORY TABLE . For wiring diagram, see WIRING DIAGRAMS section. After each repair, perform TEST VER-1 .

  1. Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. PCM is located under air cleaner. Inspect all terminals. Repair as required. If PCM terminals are okay, go to next step.
  2. Using an external ohmmeter, check resistance of Brown/White wire between IAC motor connector terminal No. 3 and PCM connector terminal No. 40. If resistance is less than 5 ohms, replace PCM. If resistance is more than 5 ohms, repair open Brown/White wire.

TEST NS-7D - INSPECTING IDLE AIR CONTROL MOTOR OPERATION

Note. For connector terminal identification, see CONNECTOR IDENTIFICATION DIRECTORY TABLE . For wiring diagram, see WIRING DIAGRAMS section. After each repair, perform TEST VER-1 .

  1. Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. PCM is located under air cleaner. Inspect all terminals. Repair as required. If PCM terminals are okay, go to next step.
  2. Using an external ohmmeter, check resistance of Violet/Black wire between IAC motor connector terminal No. 4 and PCM connector terminal No. 59. If resistance is less than 5 ohms, replace PCM. If resistance is more than 5 ohms, repair open Violet/Black wire.

TEST NS-7E - INSPECTING IDLE AIR CONTROL MOTOR OPERATION

Note. For connector terminal identification, see CONNECTOR IDENTIFICATION DIRECTORY TABLE . For wiring diagram, see WIRING DIAGRAMS section. After each repair, perform TEST VER-1 .

  1. Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. PCM is located under air cleaner. Inspect all terminals. Repair as required. If PCM terminals are okay, go to next step.
  2. Using an external ohmmeter, check resistance of Yellow/Black wire between IAC motor connector terminal No. 2 and PCM connector terminal No. 60. If resistance is less than 5 ohms, replace PCM. If resistance is more than 5 ohms, repair open Yellow/Black wire.

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