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Engine Controls - Tests W/codes - 3.9L: Overview Dodge Dakota WS

Testing & Diagnostics 19 illustrations ~969 words

MODEL IDENTIFICATION

Vehicle body codes are used throughout self-diagnostic tests. See VEHICLE BODY IDENTIFICATION table for model identification.

Model NameBody Type
DakotaAN
Ram Van/Ram WagonAB
PickupBR

VEHICLE BODY IDENTIFICATION

CONNECTOR IDENTIFICATION

ConnectorSee
A/C Clutch Relay(Scheme 54)
Auto Shutdown (ASD) Relay(Scheme 55)
Camshaft Sensor(Scheme 56)
Crankshaft Sensor(Scheme 57)
Engine Coolant Temperature (ECT) Sensor(Scheme 59)
Evaporative Purge Solenoid(Scheme 60)
Exhaust Gas Recirculation (EGR) Solenoid(Scheme 58)
Fuel Pump(Scheme 61)
Fuel Pump Relay(Scheme 62)
Idle Air Control (IAC) Motor(Scheme 63)
Intake Air Temperature (IAT) Sensor(Scheme 64)
Manifold Absolute Pressure (MAP) Sensor(Scheme 65)
Overdrive Solenoid(Scheme 66)
Oxygen Sensor(Scheme 67) & see scheme 15
Powertrain Control Module (PCM)(Scheme 72)
Torque Converter Clutch (TCC) Relay(Scheme 68)
Throttle Position Sensor (TPS)(Scheme 69)
Transmission Solenoid(Scheme 70)
Transmission Temperature Sensor(Scheme 71)

CONNECTOR IDENTIFICATION

TerminalWire ColorFunction
ADark BlueIgnition 12-Volt Feed
BRed/Light GreenOutput
CDark Blue/OrangeControl
DDark Blue/BlackBattery Voltage

A/C CLUTCH RELAY CONNECTOR TERMINAL ID (AB BODY)

Scheme 54

Scheme 54
Scheme 54
TerminalWire ColorFunction
A(1) Dark Blue/WhiteIgnition 12-Volt Feed
B(2) RedBattery Voltage
CDark Blue/YellowControl
DDark Green/OrangeOutput
(1) Light Green/Black on BR body. (2) Gray/White on BR body.
(1)Light Green/Black on BR body.
(2)Gray/White on BR body.

ASD RELAY CONNECTOR TERMINAL ID (AB/BR BODY)

Scheme 55

Scheme 55
Scheme 55
TerminalWire ColorFunction
1Tan/YellowSignal
2Black/Light BlueGround
3Orange8-Volt Supply

CAMSHAFT POSITION SENSOR CONNECTOR TERMINAL ID

Scheme 56

Scheme 56
Scheme 56
TerminalWire ColorFunction
1Gray/BlackSignal
2Black/Light BlueGround
3Orange8-Volt Supply

CRANKSHAFT POSITION SENSOR CONNECTOR TERMINAL ID

Scheme 57

Scheme 57
Scheme 57
TerminalWire ColorFunction
1(1) Dark BlueIgnition 12-Volt Feed
2Gray/YellowControl
(1) Light Green/Black on BR body.
(1)Light Green/Black on BR body.

EGR SOLENOID CONNECTOR TERMINAL IDENTIFICATION

Scheme 58

Scheme 58
Scheme 58
TerminalWire ColorFunction
1Tan/BlackSignal
2Black/Light BlueGround

ECT SENSOR CONNECTOR TERMINAL IDENTIFICATION

Scheme 59

Scheme 59
Scheme 59
TerminalWire ColorFunction
1(1) Light BlueIgnition 12-Volt Feed
2Pink/BlackControl
(1) Light Green/Black on BR body
(1)Light Green/Black on BR body

EVAPORATIVE PURGE SOLENOID CONNECTOR TERMINAL ID

Scheme 60

Scheme 60
Scheme 60
TerminalWire ColorFunction
1Dark Green/BlackFuel Pump Relay Output
2Dark BlueSending Unit Ground
3N/aNot Used
4(1) BlackSending Unit Ground
5BlackFuel Pump Ground
(1) Black/White on BR body.
(1)Black/White on BR body.

FUEL PUMP CONNECTOR TERMINAL IDENTIFICATION

Scheme 61

Scheme 61
Scheme 61
TerminalWire ColorFunction
ALight Green/BlackIgnition 12-Volt Feed
BDark Green/BlackBattery Voltage
CDark Blue/YellowASD Relay Control
DRed/WhiteFuel Pump Relay Output
EN/aNot Used

FUEL PUMP RELAY CONNECTOR TERMINAL ID (BR Body)

Scheme 62

Scheme 62
Scheme 62
TerminalWire ColorFunction
1Gray/RedIAC Driver No. 3
2Yellow/BlackIAC Driver No. 2
3Brown/WhiteIAC Driver No. 1
4Violet/BlackIAC Driver No. 4

IAC MOTOR CONNECTOR TERMINAL ID

Scheme 63

Scheme 63
Scheme 63
TerminalWire ColorFunction
1Black/RedSignal
2Black/Light BlueGround

IAT SENSOR CONNECTOR TERMINAL ID

Scheme 64

Scheme 64
Scheme 64
TerminalWire ColorFunction
1Black/Light BlueGround
2Dark Green/RedSignal
3Violet/White5-Volt Supply

MAP SENSOR CONNECTOR TERMINAL ID

Scheme 65

Scheme 65
Scheme 65
TerminalWire ColorFunction
1Orange/BlackTCC Solenoid Control
2Light Green/Black12-Volt Supply
3BrownSignal

OVERDRIVE SOLENOID CONNECTOR TERMINAL IDENTIFICATION

Scheme 66

Scheme 66
Scheme 66
TerminalWire ColorFunction
1Black/Light BlueSensor Ground
2(1) Dark Green/WhiteSignal
3(2) BlackHeater Ground
4Dark Green/OrangeHeater Feed
(1) Tan/White on BR body. (2) Black/White on BR body.
(1)Tan/White on BR body.
(2)Black/White on BR body.

OXYGEN SENSOR CONNECTOR TERMINAL ID (LEFT SENSOR)

Scheme 67

Scheme 67
Scheme 67
TerminalWire ColorFunction
1Black/Light BlueSensor Ground
2(1) Black/Dark GreenSignal
3(2) Black/WhiteHeater Ground
4Dark Green/OrangeHeater Feed
(1) Tan/White on AB body and AN Body. (2) Black/Tan on AB body and AN Body.
(1)Tan/White on AB body and AN Body.
(2)Black/Tan on AB body and AN Body.

O2 SENSOR CONNECTOR TERMINAL ID (RIGHT SENSOR)

TerminalWire ColorFunction
ADark BlueIgnition 12-Volt Feed
BDark BlueBattery Voltage
COrange/BlackControl
DDark Blue/WhiteOutput
EBlackGround

TCC RELAY CONNECTOR TERMINAL IDENTIFICATION

Scheme 68

Scheme 68
Scheme 68
TerminalWire ColorFunction
1Black/Light BlueGround
2Orange/Dark BlueSignal
3Violet/White5-Volt Supply

TPS CONNECTOR TERMINAL IDENTIFICATION

Scheme 69

Scheme 69
Scheme 69
TerminalWire ColorFunction
1BrownOverdrive Solenoid Control
2(1) Dark BlueIgnition 12-Volt Feed
3Orange/BlackTCC Solenoid Control
(1) Light Green/Black on BR body.
(1)Light Green/Black on BR body.

TRANSMISSION SOLENOID CONNECTOR TERMINAL ID

Scheme 70

Scheme 70
Scheme 70
TerminalWire ColorFunction
1VioletSensor Signal
2Black/Light BlueGround

TRANSMISSION TEMPERATURE SENSOR CONNECTOR TERMINAL ID

Scheme 71

Scheme 71
Scheme 71

Scheme 72

Scheme 72
Scheme 72
CAUTIONWhen battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION section before disconnecting battery.

TEST NTC-9A - CHECKING SOLENOID OPERATIONS

Note. For connector terminal identification, see CONNECTOR IDENTIFICATION in this article. For wiring diagram, see appropriate WIRING DIAGRAMS .

  1. Using DRB, actuate purge solenoid. While touching top of purge solenoid, feel for operation. If purge solenoid does not operate, replace purge solenoid. Perform «TEST VER-2»(ref-10889-S40837604532000111000000) .
  2. If purge solenoid operates, actuate EGR solenoid. While touching top of EGR solenoid, feel for operation. If EGR solenoid does not operate, replace EGR solenoid. Perform TEST VER-2. If EGR solenoid operates, test is complete.

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

Note. For connector terminal identification, see CONNECTOR IDENTIFICATION in this article. For wiring diagram, see appropriate WIRING DIAGRAMS .

  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, driver No. 3 circuit (Gray/Red wire on AB, AN and BR bodies). If voltage is less than one volt, go to TEST NS-7B.
  2. If voltage is more than one volt, check voltage on IAC motor connector, driver No. 1 circuit (Brown/White wire). If voltage is less than one volt, go to «TEST NS-7C»(ref-10889-S36638799132000111000000) .
  3. If voltage is more than one volt, check voltage on IAC motor connector, driver No. 4 circuit (Violet/Black wire on AB, AN and BR bodies). If voltage is less than one volt, go to «TEST NS-7D»(ref-10889-S29332828402000111000000) .
  4. If voltage is more than one volt, check voltage on IAC motor connector, driver No. 2 circuit (Yellow/Black wire on AB, AN and BR bodies). If voltage is less than one volt, go to «TEST NS-7E»(ref-10889-S08563146352000111000000) .
  5. If voltage is more than one volt, turn ignition off. Remove IAC motor from throttle body. Reconnect IAC motor connector. Turn ignition on. Using DRB, actuate IAC motor. If IAC motor pintle moves in and out, go to «TEST NS-8A»(ref-10889-S12036561862000111000000) . If IAC motor pintle does not move in and out, replace IAC motor. Perform TEST VER-1.

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

Note. For connector terminal identification, see CONNECTOR IDENTIFICATION in this article. For wiring diagram, see WIRING DIAGRAMS .

  1. Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Inspect connectors for damaged, pushed-out or miswired terminals. Repair as required. Perform «TEST VER-1»(ref-10889-S29777430702000111000000) . If PCM terminals are okay, go to next step.
  2. Using an external ohmmeter, check resistance of driver No. 3 circuit (Gray/Red wire on AB, AN and BR bodies) between IAC motor connector and PCM connector terminal No. 39. If resistance is less than 5 ohms, replace PCM. Perform TEST VER-1. If resistance is more than 5 ohms, repair open Gray/Red wire or Yellow/Black wire. Perform TEST VER-1.

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

Note. For connector terminal identification, see CONNECTOR IDENTIFICATION in this article. For wiring diagram, see appropriate WIRING DIAGRAMS .

  1. Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Inspect connectors for damaged, pushed-out or miswired terminals. Repair as required. Perform «TEST VER-1»(ref-10889-S29777430702000111000000) . If PCM terminals are okay, go to next step.
  2. Using an external ohmmeter, check resistance of driver No. 1 circuit (Brown/White wire) between IAC motor connector and PCM connector terminal No. 40. If resistance is less than 5 ohms, replace PCM. Perform TEST VER-1. If resistance is more than 5 ohms, repair open Brown/White wire. Perform TEST VER-1.

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

Note. For connector terminal identification, see CONNECTOR IDENTIFICATION in this article. For wiring diagram, see appropriate WIRING DIAGRAMS .

  1. Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Inspect connectors for damaged, pushed-out or miswired terminals. Repair as required. Perform «TEST VER-1»(ref-10889-S29777430702000111000000) . If PCM terminals are okay, go to next step.
  2. Using an external ohmmeter, check resistance of driver No. 4 circuit (Violet/Black wire on AB, AN and BR bodies) between IAC motor connector and PCM connector terminal No. 59. If resistance is less than 5 ohms, replace PCM. Perform TEST VER-1. If resistance is more than 5 ohms, repair open Violet/Black wire. Perform TEST VER-1.

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

Note. For connector terminal identification, see CONNECTOR IDENTIFICATION in this article. For wiring diagram, see appropriate WIRING DIAGRAMS .

  1. Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Inspect connectors for damaged, pushed-out or miswired terminals. Repair as required. Perform «TEST VER-1»(ref-10889-S29777430702000111000000) . If PCM terminals are okay, go to next step.
  2. Using external ohmmeter, check resistance of driver No. 2 circuit (Yellow/Black wire on AB, AN and BR bodies) between IAC motor connector and PCM connector terminal No. 60. If resistance is more than 5 ohms, repair open Yellow/Black wire or Violet/Black wire. Perform TEST VER-1. If resistance is less than 5 ohms, replace PCM. Perform TEST VER-1.

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