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

Hard Failures

Hard failures cause MIL to glow and remain on until malfunction is repaired. If light comes on and remains on (light may flash) during vehicle operation, determine cause of malfunction using self-diagnostic tests. If a sensor fails, PCM will use a substitute value in its calculations, allowing engine to operate in limp-in mode. In this condition, vehicle will run, but driveability may be poor.

Intermittent Failures

Intermittent failures may cause MIL to flicker or stay on until intermittent trouble code goes away. However, PCM memory will retain corresponding trouble code. If related trouble code does not reoccur within a certain time frame, related trouble code will be erased from PCM memory. Intermittent failures can be caused by a failed sensor, bad connector or wiring related problems.

FUEL PRESSURE RELEASE

Disconnect negative battery cable. Loosen fuel filler cap to release tank pressure. Remove protective cap from pressure test port on fuel rail. Using appropriate fuel pressure gauge/hose with gauge removed, place gauge end of hose into approved gasoline container. To release pressure, screw other end of hose onto pressure test port. After pressure is released, remove hose from test port and install protective cap.

Code 11

DRB displays NO CRANK REFERENCE SIGNAL AT PCM. Condition is: no crankshaft reference signal detected during cranking.

Code 12

DRB displays BATTERY DISCONNECT. Condition is: Direct battery input to Powertrain Control Module (PCM) disconnected within last 50 key-on cycles.

Code 13

DRB displays SLOW CHANGE IN IDLE MAP SENSOR SIGNAL. Condition is: Manifold Absolute Pressure (MAP) sensor output change slower and/or smaller than expected.

DRB displays NO CHANGE IN MAP FROM START TO RUN. Condition is: no difference recognized between Manifold Absolute Pressure (MAP) reading and barometric (atmospheric) pressure reading at start-up.

Code 14

DRB displays MAP VOLTAGE TOO LOW. Condition is: Manifold Absolute Pressure (MAP) sensor input less than minimum acceptable voltage.

DRB displays MAP VOLTAGE TOO HIGH. Condition is: Manifold Absolute Pressure (MAP) sensor input more than maximum acceptable voltage.

Code 15

DRB displays NO VEHICLE SPEED SENSOR SIGNAL. Condition is: no Vehicle Speed Sensor (VSS) signal detected with road load conditions.

Code 17

DRB displays ENGINE IS COLD TOO LONG. Condition is: coolant temperature stays less than normal operating temperature during vehicle operation.

Code 21

DRB displays O2S STAYS AT CENTER. Condition is: no rich or lean signal detected from oxygen sensor input.

DRB displays O2S SHORTED TO VOLTAGE. Condition is: oxygen sensor input voltage maintained at more than normal operating range.

Code 22

DRB displays ECT SENSOR VOLTAGE TOO LOW. Condition is: Engine Coolant Temperature (ECT) sensor input less than minimum acceptable voltage.

DRB displays ECT SENSOR VOLTAGE TOO HIGH. Condition is: Engine Coolant Temperature (ECT) sensor input more than maximum acceptable voltage.

Code 23

DRB displays INTAKE AIR TEMPERATURE SENSOR VOLTAGE LOW. Condition is: Intake Air Temperature (IAT) sensor input less than minimum acceptable voltage.

DRB displays INTAKE AIR TEMPERATURE SENSOR VOLTAGE HIGH. Condition is: Intake Air Temperature (IAT) sensor input more than maximum acceptable voltage.

DRB displays THROTTLE BODY TEMP VOLTAGE HIGH. Condition is: throttle body temperature input is more than maximum acceptable voltage.

DRB displays THROTTLE BODY TEMP VOLTAGE LOW. Condition is: throttle body temperature input is less than maximum acceptable voltage.

Code 24

DRB displays THROTTLE POSITION SENSOR VOLTAGE LOW. Condition is: Throttle Position Sensor (TPS) input less than minimum acceptable voltage.

DRB displays THROTTLE POSITION SENSOR VOLTAGE HIGH. Condition is: Throttle Position Sensor (TPS) input more than maximum acceptable voltage.

Code 25

DRB displays IDLE AIR CONTROL MOTOR CIRCUITS. Condition is: open or shorted condition detected in one or more Idle Air Control (IAC) motor circuits.

Code 27

DRB displays INJECTOR (#1-#8) CONTROL CIRCUIT. Condition is: injector output driver does not respond properly to Powertrain Control Module (PCM) control signal.

Code 31

DRB displays EVAP PURGE SOLENOID CIRCUIT. Condition is: open or shorted condition detected in purge solenoid circuit.

Code 32

DRB displays EGR SOLENOID CIRCUIT. Condition is: open or shorted condition detected in EGR solenoid circuit.

DRB displays EGR SYSTEM FAILURE. Condition is: required change in air/fuel ratio not detected during diagnostic test. Trouble code is only present on models with California emissions packages.

Code 33

DRB displays A/C CLUTCH RELAY CIRCUIT. Condition is: open or shorted condition detected in A/C clutch relay circuit.

Code 34

DRB displays SPEED CONTROL SOLENOID CIRCUITS. Condition is: open or shorted condition detected in speed control vacuum or vent solenoid circuits.

DRB displays SPEED CONTROL SWITCH ALWAYS LOW. Condition is: speed control switch input less than minimum acceptable level.

DRB displays SPEED CONTROL SWITCH ALWAYS HIGH. Condition is: speed control switch input more than minimum acceptable level.

Code 35

DRB displays RADIATOR FAN RELAY CIRCUIT. Condition is: open or shorted condition detected in radiator fan relay circuit.

Code 37

DRB displays TORQUE CONVERTER CLUTCH SOLENOID CIRCUIT. Condition is: open or shorted condition detected in torque converter clutch solenoid circuit.

DRB displays TRANS TEMP SENSOR VOLTAGE TOO LOW. Condition is: voltage low at transmission temperature sensor.

DRB displays TRANS TEMP SENSOR VOLTAGE TOO HIGH. Condition is: voltage high at transmission temperature sensor.

Code 41

DRB displays GENERATOR FIELD NOT SWITCHING PROPERLY. Condition is: open or shorted condition detected in alternator field circuit.

Code 42

DRB displays AUTO SHUTDOWN RELAY CONTROL CIRCUIT. Condition is: open or shorted condition detected in Auto Shutdown (ASD) relay circuit.

DRB displays NO ASD RELAY VOLTAGE SENSE AT PCM. Condition is: Powertrain Control Module (PCM) did not receive message in Auto Shutdown (ASD) relay circuit.

Code 43

DRB displays IGNITION COIL (#1-#5) PRIMARY CIRCUIT. Condition is: peak primary circuit current not achieved with maximum dwell time.

Code 44

DRB displays BATTERY TEMP SENSOR VOLTS OUT OF LIMIT. Condition is: battery temperature sensor volts out of limit.

Code 45

DRB displays OVERDRIVE SOLENOID. Condition is: open or shorted condition detected in overdrive solenoid circuit.

Code 46

DRB displays CHARGING SYSTEM VOLTAGE TOO HIGH. Condition is: battery voltage sense input more than target charging voltage during engine operation.

Code 47

DRB displays CHARGING SYSTEM VOLTAGE TOO LOW. Condition is: battery voltage sense input less than target charging voltage during engine operation.

Code 51

DRB displays O2S STAYS BELOW CENTER (LEAN). Condition is: oxygen sensor input indicates lean air/fuel ratio during engine operation.

Code 52

DRB displays ADDITIVE ADAPTIVE MEMORY AT LEAN LIMIT. Condition is: additive adaptive memory at lean limit.

DRB displays O2S STAYS ABOVE CENTER (RICH). Condition is: oxygen sensor input indicates rich air/fuel ratio during engine operation.

Code 53

DRB displays INTERNAL PCM FAILURE. Condition is: Powertrain Control Module (PCM) detects internal failure.

DRB displays PCM FAILURE SPI COMMUNICATION. Condition is: Powertrain Control Module (PCM) detects internal failure.

Code 54

DRB displays CRANKSHAFT SIGNAL SYNC PICK-UP SIGNAL. Condition is: no fuel sync signal detected during crankshaft rotation.

DRB displays NO CAM SYNC SIGNAL AT PCM. Condition is: open or shorted condition detected in cam sync signal circuit.

Code 55

DRB display will be blank. Completion of trouble code display by MIL light.

Code 62

DRB displays PCM FAILURE SRI MILES NOT STORED. Condition is: Powertrain Control Module (PCM) detects internal failure.

Code 63

DRB displays PCM FAILURE EEPROM WRITE DENIED. Condition is: unsuccessful attempt to write to an EEPROM location by PCM.

SUMMARY

If no hard trouble codes (or only pass codes) are present, driveability symptoms exist or intermittent codes exist, proceed to TESTS W/O CODES - GASOLINE article in the ENGINE PERFORMANCE section article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.) or intermittent diagnostic procedures.

Wiring Diagram (Dakota - 3.9L - 1 Of 2). Scheme 75

Wiring Diagram (Dakota - 3.9L - 2 Of 2). Scheme 76

Wiring Diagram (Ram Van/Ram Wagon - 3.9L - 1 Of 2). Scheme 77

Wiring Diagram (Ram Van/Ram Wagon - 3.9L - 2 Of 2). Scheme 78