TESTING & DIAGNOSIS
Note. The Part Throttle Unlock (PTU) solenoid and lock-up torque converter solenoid are the same solenoid. This solenoid will be referred to as a PTU solenoid in this article.
SYSTEM DIAGNOSIS
The self-diagnostic capabilities of this system, if properly utilized, can greatly simplify testing. The SMEC has been programmed to monitor several different circuits of the engine control system. If a problem is sensed with a monitored circuit, a fault code is stored in the SMEC.
The check engine light will illuminate and SMEC will enter limp-in mode. In this mode, SMEC attempts to compensate for the failure of a particular component by substituting information from other sources. This will allow vehicle to be operated until proper repairs can be made.
Once these codes are known, refer to FAULT CODES listed in this article to determine the questionable circuit. Test circuits and repair or replace as necessary. If problem is repaired or ceases to exist, the logic module cancels fault codes after 50-100 ignition on/off cycles. If DRB-II is being used, refer to CLEARING CODES in this article.
The setting of a specific fault code is the result of a particular system failure, NOT the reason for that failure, such as failure of a specific component. The existence of a particular code denotes the probable area of the malfunction, not necessarily the failed component itself.
Scheme 192
PRELIMINARY INSPECTION
Most driveability problems in the engine control system result from faulty wiring or leaking hose connections. To avoid unnecessary component testing, a visual check should be performed before beginning trouble shooting procedures to help spot these common faults. A preliminary visual check should include
- Electrical connections at all components. Clean, tight and unbroken.
Check vacuum lines for secure, leak-free connections in these areas
- Canister purge hose.
- EGR vacuum line on EGR valve and EGR solenoid. Check hose between backpressure valve and exhaust supply tube on EGR.
- Evaporative control system.
- Fuel pressure regulator vacuum hose.
- Heated air intake system.
- MAP sensor.
- PCV valve hose and correct PCV valve.
- Power brake, speed control, heater and A/C system vacuum hoses.
- Throttle body.
Ensure the following electrical connectors are securely attached
- 14-pin and 60-pin connectors at Single Module Engine Controller (SMEC).
- A/C clutch relay connector.
- A/C damped pressure switch connector.
- Alternator connector.
- ASD relay connector.
- Canister purge solenoid connector.
- Check engine light.
- Coolant temperature sensor connector.
- Distance (speed) sensor connector.
- Distributor connector.
- Engine grounds.
- Engine harness to main harness.
- EGR diagnostic solenoid connector (California only).
- Fuel injector connector.
- Ground eyelet at radiator support.
- Heated O2 sensor connector.
- Idle Speed Control (ISC) motor connector.
- MAP sensor connector.
- Neutral safety switch connector.
- Oxygen (O2) sensor connector.
- Radiator fan relay connector.
- Spark plug and coil wires.
- Starter relay connector.
- Throttle body temperature sensor connector.
- TPS connector.
DIAGNOSTIC PROCEDURE
Refer to ENTERING ON-BOARD DIAGNOSTICS to retrieve fault codes. When using check engine light to retrieve fault codes, refer to description of DRB-II display under FAULT CODE DESCRIPTIONS for an explanation of fault code. Once description of fault code is obtained, refer to appropriate trouble shooting chart to diagnose problem. Use trouble shooting chart titles to find appropriate chart.
If no fault codes are present, but vehicle still displays one of the following conditions, go to appropriate test.
- No start condition. Go to NS-1.
- Cold driveability problem. Go to DR-1.
- Warm driveability problem. Go to DR-1.
- Check engine light is illuminated. Go to DR-1.
- Charging system problem. Go to CH-1.
- Speed control system problem. Go to SP-1.
Note. When using trouble shooting charts for diagnosis, DO NOT skip any steps in chart, as incorrect diagnosis will result.
Before proceeding with diagnosis, the following precautions must be followed
- Vehicle must have a fully charged battery.
- Always start at TEST 1 in any category (NO START, DRIVEABILITY, etc.).
- Reconnect all wires and hoses at the end of each test or when directed to do so.
- When performing a cold driveability test, engine must not have been started for at least 7 hours.
- When performing a warm driveability test, engine must be at normal operating temperature.
- When probing SMEC connectors, probe connectors from pin side. DO NOT backprobe connectors.
- When performing electrical tests, be careful to not cause any short circuits. This may damage components or set more fault codes, making diagnosis of original problem more difficult.
- DO NOT use a test light in place of a voltmeter.
- When checking for spark, ensure coil wire is no more than 1/4" from ground. If wire is farther away from ground, damage to SMEC may result.
- DO NOT prolong testing of fuel injectors as engine may hydrostatically lock.
- Always repair lowest fault number (check engine light) or first fault displayed (DRB-II), first.
- Always perform indicated verification test after repairs are made.
Using Check Engine Light
- Start engine (if possible). Move transmission shift lever through all positions, ending in Park. Turn A/C switch on, then off (if equipped).
- Turn engine off. Without starting engine again, turn ignition on, off, on, off and on. Record 2-digit fault codes as displayed by flashing check engine light.
- For example, Code 23 is displayed as flash, flash, 4 second pause, flash, flash, flash. After a slightly longer pause, any other codes stored are displayed in numerical order.
- Once the check engine light begins to flash fault codes, it cannot be stopped. If you loose count, it will be necessary to start over. Code 55 indicates end of fault code display. Refer to «FAULT CODE DESCRIPTIONS»(/dodge/dakota-shelby/1989-1989/remont/testing-diagnostics/#v6-v8-tbi-tests-wcodes) in this article.
Using DRB-II
- Attach DRB-II Tester (C-4805) to diagnostic self-test connector. Connector is located in engine compartment on right side of cowl on Dakota models, near SMEC on Van models and near power booster on Pickup models.
- Start engine (if possible). Move transmission shift lever through all positions, ending in Park. Turn A/C switch on, then off (if equipped).
- Turn engine off. Without starting engine again, turn ignition on. Enter vehicle model year and engine size. Read fault data on DRB-II. Refer to «FAULT CODE DESCRIPTIONS»(/dodge/dakota-shelby/1989-1989/remont/testing-diagnostics/#v6-v8-tbi-tests-wcodes) in this article.
Read Fault Data
This option will display any stored fault codes for diagnosis.
Erase Fault Data
This option allows the technician to erase all the fault codes stored in the SMEC.
Read Input States
This option allows technician to read input states of Z1 voltage (ignition input) sense, park/neutral switch, closed throttle switch, brake switch, A/C switch and speed control resume, on/off and set switches. Switch inputs have only 2 input states, "HI" and "LO". SMEC cannot recognize switch position versus open circuit, a short circuit or a defective switch. It can only recognize if the switch changed state when actuated ("HI" to "LO" or "LO" to "HI").
Read Output States
This option allows technician to read output states of speed control vacuum solenoid, purge solenoid, Part Throttle Unlock (PTU) solenoid, A/C clutch relay, radiator fan relay, ASD relay, check engine light, speed control vent solenoid and EGR solenoid. DRB-II will display "ENERGIZED" OR "DE-ENERGIZED" as SMEC senses component status changing.
Actuate Solenoids & Relays
This option allows SMEC to actuate A/C clutch relay, ASD relay, purge solenoid, speed control servo solenoids, Part Throttle Unlock (PTU) solenoid, EGR solenoid AIR switching solenoid and overdrive solenoid. With tester in this state, SMEC can also actuate all solenoids and relays simultaneously. This test allows technician to visually and physically observe components under operation.
Actuate Outputs
This option allows SMEC to actuate ignition coil, fuel injectors No. 1 and No. 2, ISC motor open and close, tachometer output (tach should read 1364 RPM) and shift indicator light.
Read Sensor Voltages
This option allows technician to read battery temperature sensor, oxygen sensor, coolant temperature sensor, throttle body temperature, TPS sensor, minimum throttle position, battery voltage, MAP sensor inputs in volts.
Read Sensor Values
This option allows technician to read throttle body temperature sensor in degrees Fahrenheit or centigrade, coolant temperature in degrees Fahrenheit or centigrade, manifold pressure in inches of vacuum or kilopascals, ISC motor in steps, added adaptive fuel in microseconds, adaptive fuel factor in percent, barometric pressure in inches of mercury or kilopascals, engine speed in RPM, SMEC spark advance in degrees, vehicle speed given in MPH and oxygen sensor state given as center, rich or lean.
Set Engine RPM
This option allows technician to set engine RPM at a fixed speed from 900-2000 in 100 RPM increments. This allows for accuracy of ISC motor control to be checked.
Minimum Airflow Idle Speed
This option allows technician to completely close AIS motor to check minimum idle speed.
Emissions EMR Tests
This option allows the technician to reset emission reminder light and mileage.
Read Module Information
This option allows technician to read SMEC part number and application.
Blank Message Screen
- Connect DRB-II to a different vehicle. If message screen is still blank, DRB-II or cable adapter is faulty. Substitute to find faulty component. If message screen is not blank, DRB-II and cable adapter are functioning properly.
- Inspect diagnostic connector for proper wire placement, damaged terminals or pushed out pins. Repair as necessary. If connector is okay, check Black/White ground wire of diagnostic connector for continuity to ground. Repair as necessary.
Scheme 193
"NO RESPONSE" Message
- Disconnect SMEC 60-pin connector. Ensure ignition is turned on. Using an ohmmeter, check Pink wire of diagnostic connector for continuity to SMEC 60-pin connector cavity No. 51.
- Check Light Green wire of diagnostic connector for continuity to SMEC 60-pin connector cavity No. 31. If continuity is not present, repair circuit as necessary. If continuity is present, replace SMEC. Attempt retest.
"RAM TEST FAILURE" Message
Replace DRB-II.
"CARTRIDGE ERROR" Message
Replace DRB-II cartridge.
"KEY PAD TEST FAILURE" Message
Power up DRB-II again with fingers off keypad. If error message returns, replace DRB-II.
"HIGH OR LOW BATTERY" Message
Correct condition of vehicle battery and reconnect DRB-II.
CLEARING CODES
Using DRB-II, select test "ERASE FAULT DATA". Press "YES" key on DRB-II. DRB-II will display "ARE YOU SURE? YES/NO". Press "YES" key. Tester will display "ERASING FAULT DATA X". When DRB-II is finished erasing fault codes, it will display "FAULT DATA ERASED".
If DRB-II is not available, fault codes may be cleared by allowing 50-100 key on/off cycles to occur. This will allow SMEC to clear fault codes.
Scheme 194
Scheme 195
EMISSION MAINTENANCE REMINDER (EMR) LIGHT RESET PROCEDURE
- The Emission Maintenance Reminder (EMR) light is designed to be a reminder to service the vehicle emissions control system. It is not an emissions warning system, only a reminder to perform emissions servicing.
- The components to be serviced include the EGR system, PCV valve, oxygen sensor and some vacuum operated components. EMR light will illuminate after a predetermined mileage.
- Using DRB-II (C-4805 ), select "EMISSIONS EMR TESTS". Select "EMR MEMORY CHECK". Press "F1" or "F2" key on DRB-II until display reads, "RESET EMR LIGHT". Press "YES" key.
- Display will read, "RESET EMR LIGHT ARE YOU SURE? YES, NO". Press "YES" key. When DRB-II is finished resetting EMR light, display will read "EMR LIGHT RESET".
EMISSION MAINTENANCE REMINDER (EMR) MILEAGE TRANSFER
- When vehicle engine controller is replaced, vehicle mileage must be copied from odometer to a memory location within the replacement engine controller. Transfer of vehicle mileage will enable new engine controller to operate EMR light properly.
- Using DRB-II (C-4805), enter "EMISSIONS EMR TESTS". Press "YES" key. Select test item "EMR MEMORY CHECK". Press "YES" key. DRB-II display will read "EMR MEMORY CHECK ARE YOU SURE ? YES, NO". Press "YES" key.
- DRB-II will display "IS INSTRUMENT PANEL MILEAGE BETWEEN 9953 AND 10051 ?". If vehicle mileage is within specification, EMR memory check is complete. Press "YES" key. If vehicle mileage is not within specification, go to next step.
- Press "NO" key. DRB-II will display "DO YOU WANT TO CORRECT EMR MILEAGE ?". Press "YES" key. DRB-II will display "ENTER MILEAGE SHOWN ON INSTRUMENT PANEL USE ENTER KEY TO END".
- Enter vehicle mileage. DO NOT enter tenths. When correct vehicle mileage is entered, press "Enter" key. DRB-II will ask for verification of mileage entry. If mileage entry was accurate, press "Enter" key. DRB-II will display "EMR MEMORY CHECK TEST COMPLETE". Vehicle must travel at least 8 miles for reset to occur.
DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| CODE | DISPLAY ON DRB-II | FAULT CONDITION |
|---|---|---|
| 11 | IGN REFERENCE SIGNAL | No Distributor Reference Signal Picked Up During Cranking. |
| 12 | NUMBER OF KEY-ONS SINCE LAST FAULT OR SINCE FAULTS WERE ERASED. | Direct Battery Input To SMEC Was Disconnected Within Last 50-100 Ignition Key-Ons. |
| 13 (1) (2) | MAP PNEUMATIC SIGNAL | No Difference In MAP Sensor Signal Is Detected. |
| 13 (1) (2) | MAP PNEUMATIC CHANGE | No Difference Is Detected Between MAP Reading And Stored Barometric Pressure Reading. |
| 14 (1) (2) | MAP VOLTAGE TOO LOW | MAP Sensor Input Less Than Minimum Acceptable Voltage. |
| 14 (1) (2) | MAP VOLTAGE TOO HIGH | MAP Sensor Input More Than Maximum Acceptable Voltage. |
| 15 (2) | VEHICLE SPEED SIGNAL | No Distance Sensor Signal Detected With Road Load Conditions. |
| 16 (1) (2) | BATTERY INPUT SENSE | Battery Voltage Sense Input Not Detected With Engine Running. |
| 17 (3) | LOW ENGINE TEMP | Coolant Temperature Stays Below Normal Operating Temperature During Vehicle Operation. |
| 21 (2) | OXYGEN SENSOR SIGNAL | No Rich Or Lean Signal Is Detected From O2 Sensor Input. |
| 22 (1) (2) | COOLANT VOLTAGE LOW | Coolant Temp. Sensor Input Below Minimum Acceptable Voltage. |
| 22 (1) (2) | COOLANT VOLTAGE HIGH | Coolant Temp. Sensor Input Above Maximum Acceptable Voltage. |
| 23 | T/B TEMP VOLTAGE LOW | Throttle Body Temperature Sensor Input Below The Minimum Acceptable Voltage. |
| 23 | T/B TEMP VOLTAGE HIGH | Throttle Body Temperature Senosr Input Above The Maximum Acceptable Voltage. |
| 24 (1) (2) | TPS VOLTAGE LOW | TPS Sensor Output Less Than Minimum Acceptable Voltage. |
| 24 (1) (2) | TPS VOLTAGE HIGH | TPS Sensor Output More Than Maximum Acceptable Voltage. |
| 25 (2) | AIS MOTOR CIRCUITS | Shorted Condition Detected In One Or More AIS Control Ckts. |
| 26 | INJ 1 PEAK CURRENT | High Resistance Detected In Injector Output Circuit. |
| 26 | INJ 2 PEAK CURRENT | High Resistance Detected In Injector Output Circuit. |
| 27 | INJ 1 CONTROL CIRCUIT | Injector Output Driver Stage Does Not Respond Correctly To SMEC Control Signal. |
| 31 (2) | PURGE SOLENOID CKT | Open Or Shorted Condition Is Detected In Purge Solenoid Ckt. |
| 32 (2) | EGR SOLENOID CIRCUIT | Open Or Short Is Detected In EGR Solenoid Circuit (CA Only). |
| 32 (2) | EGR SYSTEM FAILURE | SMEC Did Not Detect Required Air/Fuel Change During Diagnostic Test (CA Only). |
| 33 | A/C CLUTCH RELAY CKT | Open Or Shorted Condition Detected In A/C Clutch Relay Circuit. |
| 34 | S/C SERVO SOLENOIDS | Open Or Shorted Condition Detected In Speed Control Vacuum Or Vent Solenoid Circuits. |
| 35 | IDLE SWITCH SHORTED | Idle Contact Switch Input Circuit Short To Ground. |
| 35 | IDLE SWITCH OPENED | Idle Contact Switch Input Circuit Opened. |
| 37 | PTU SOLENOID CIRCUIT (NON-OVERDRIVE) | Open Or Shorted Condition Detected In Torque Converter Part Throttle Unlock Solenoid Circuit. |
| 37 | PTU SOLENOID CIRCUIT (OVERDRIVE) | Open Or Shorted Condition Detected In Torque Converter Part Throttle Unlock Solenoid Circuit. |
| 41 | CHARGING SYSTEM CKT | Output Driver Stage Does Not Respond Correctly To Voltage Regulator Control Signal. |
| 42 | ASD RELAY CIRCUIT | Open Or Shorted Condition Detected In ASD Relay Circuit. |
| 42 | Z1 VOLTAGE SENSE | No Z1 Voltage Sense In Auto Shutdown Relay Circuit. |
| 43 | IGNITION CONTROL CIRCUIT | Output Driver Stage For Ignition Coil Does Not Respond Properly To Dwell Control Signal. |
| 44 | FJ2 VOLTAGE SENSE | No FJ2 Voltage Present At Logic Board During SMEC Operation. |
| 45 | OVERDRIVE SOLENOID | An Open Or Shorted Condition Detected In The Overdrive Solenoid Circuit (A/T Only) |
| 46 (2) | BATTERY VOLTAGE HIGH | Battery Voltage Sense Input More Than Target Charging Voltage During Engine Operation. |
| 47 | BATTERY VOLTAGE LOW | Battery Voltage Sense Input Less Than Target Charging Voltage During Engine Operation. |
| 51 (2) | LEAN F/A CONDITION | Oxygen Sensor Input Indicates Lean Air/Fuel Ratio During Engine Operation. |
| 52 (2) | RICH F/A CONDITION | Oxygen Sensor Input Indicates Rich Air/Fuel Ratio During Engine Operation. |
| 52 (2) | AIR FUEL AT LIMIT | Oxygen Sensor Signal Indicates Rich/Lean Air/Fuel Ratio During Engine Operation. |
| 52 (2) | EXCESSIVE LEANING | Adaptive Fuel Value Leaned Excessively From A Sustained Rich Condition. |
| 53 (4) | INTERNAL SELF-TEST | SMEC Detects Internal Failure. |
| 55 | — | Completion Of Fault Code Display By Check Engine Light. |
| 62 | EMR MILEAGE ACCUM | Attempt Is Unsuccessful To Update Emr Mileage In SMEC EEPROM. |
| 63 | EEPROM WRITE DENIED | Attempt Is Unsuccessful To Write To An EEPROM Location By SMEC. |
| N/A | FAULT CODE ERROR | DRB-II Does Not Recognize Fault Identification. |
| (1) Check Engine Lamp On. (2) Check Engine Lamp On (California Only). (3) Repair cooling system/thermostat. (4) Replace SMEC. | ||
| (1) | Check Engine Lamp On. |
| (2) | Check Engine Lamp On (California Only). |
| (3) | Repair cooling system/thermostat. |
| (4) | Replace SMEC. |
DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
NO START TEST
Note. Because of limited space in the menu screen, NO START tests will be titled NS. This will allow a description of the test to appear on the menu.
Note. The following trouble shooting charts and illustrations are courtesy of Chrysler Motors.
Checking For Spark At Plugs & Coil, & Fuel At Throttle Body
Note. Perform PRELIMINARY INSPECTION Before Proceeding.
NS1 - Check Spark at Plugs & Coil, & Fuel At Throttle Body. Scheme 196
NS2 - CHECK FOR FUEL FROM INJECTOR & FUEL CONTROL FAULTS
Note. Perform NS1 before proceeding
NS2 (1 of 3) - Checking For Fuel From Injector & Fuel Control Faults. Scheme 197
NS2 (2 of 3) - Checking TBI For Fuel From Injector. Scheme 198
NS2 (3 of 3) - Checking For Fuel From Injector & Fuel Control Faults (Cont.). Scheme 199
NS3 - CHECKING SMEC & ENGINE TIMING
Note. Perform NS2 before proceeding.
NS3 (1 of 3) - Checking The SMEC & Engine Timing. Scheme 200
NS3 (2 of 3) - Location Of Map Sensor Connector. Scheme 201
NS3 (3 of 3) - Connecting Ohmmeter Between 60-Pin & Map Sensor Connectors. Scheme 202
NS4 - CHECKING IGNITION CONTROL FOR FAULT & CKT DEFECTS
Note. Perform NS1 before proceeding.
NS4 (1 of 4) - Checking Ignition Control For Fault & Circuit Defects. Scheme 203
NS4 (2 of 4) - Connecting Remote Starter To 60-Pin Connector. Scheme 204
NS4 (3 of 4) - Checking Ignition Control For Fault & Circuit Defects (Cont.). Scheme 205
NS4 (4 of 4) - Connecting Ohmmeter Between 60-Pin & 14-Pin Connectors. Scheme 206
NS5 - POWER FEED TO COIL PRIMARY & PRIMARY CONTROL CIRCUITS
Note. Perform NS4 before proceeding.
NS5 (1 of 3) - Checking For Power To Coil Primary & Primary Control Circuits. Scheme 207
NS5 (2 of 3) - Testing Coil. Scheme 208
NS5 (3 of 3) - Connecting DRB-II To 14-Pin Connector. Scheme 209
NS6 - FUEL PRESSURE & THROTTLE POSITION SENSOR
Note. Perform NS2 before proceeding.
NS6 (1 of 4) - Checking For Fuel Pressure & Throttle Position Sensor. Scheme 210
NS6 (2 of 4) - Attaching Fuel Pressure Gauge To Throttle Body. Scheme 211
NS6 (3 of 4) - Checking For Fuel Pressure & Throttle Position Sensor (Cont.). Scheme 212
NS6 (4 of 4) - Checking In-Tank Fuel Pump Connector. Scheme 213
NS7 - FUEL INJECTOR DRIVER CIRCUITS (Z1 & Y11)
Note. Perform NS6 before proceeding.
NS7 (1 of 7) - Checking Fuel Injector "Z1" & "Y11" Circuits. Scheme 214
NS7 (2 of 7) - Checking Fuel Harness Connector. Scheme 215
NS7 (3 of 7) - Checking Fuel Injector At Wiring Connector. Scheme 216
NS7 (4 of 7) - Checking Fuel Injector. Scheme 217
NS7 (5 of 7) - Checking Fuel Injector With Ohmmeter. Scheme 218
NS7 (6 of 7) - Checking Fuel Injector "Z1" & "Y11" Circuits (Cont.). Scheme 219
NS7 (7 of 7) - Connecting Ohmmeter Between 14-Pin Connector & Injector Harness Connector. Scheme 220
NS8 - FAULT "INJ 1 CONTROL CIRCUIT" & CONTROL CKT (K16)
Note. Perform NS2 before proceeding.
NS8 (1 of 3) - Checking "INJ 1 CONTROL CIRCUIT" Fault Message & Control Circuit "K16". Scheme 221
NS8 (2 of 3) - Connecting Remote Starter Between 60-Pin Connector Pin No. 33 & Battery. Scheme 222
NS8 (3 of 3) - Using An Ohmmeter To Check Circuit "K16". Scheme 223
NS9 - FAULT "INJ 2 CONTROL CIRCUIT" & CONTROL CIRCUIT (Y1)
Note. Perform NS2 before proceeding.
NS9 (1 of 3) - Checking "INJ 2 CONTROL CIRCUIT" Fault Message & Control Circuit "Y1". Scheme 224
NS9 (2 of 3) - Connecting Remote Starter Between 60-Pin Connector Pin No. 32 & Battery. Scheme 225
NS9 (3 of 3) - Using An Ohmmeter To Check Circuit "Y1". Scheme 226
NS10 - FLOODING INJECTOR & CONTROL CIRCUIT
Note. Perform NS2 before proceeding.
NS10 (1 of 3) - Checking For Flooding Injector & Control Circuit. Scheme 227
NS10 (2 of 3) - Connecting Pressure Gauge To Throttle Body. Scheme 228
NS10 (3 of 3) - Checking For Flooding Injector & Control Circuit (Cont.). Scheme 229
NS11 - CHECKING FOR SYSTEM FAULTS
Note. Perform NS1 before proceeding.
NS11 (1 of 2) - Checking For System Faults. Scheme 230
NS11 (2 of 2) - Checking For System Faults (Cont.). Scheme 231
NS12 - SYSTEM POWER & GROUND
Note. Perform NS11 before proceeding.
NS12 (1 of 5) - Checking For System Power & Ground. Scheme 232
NS12 (2 of 5) - View Of TPS Connector (Harness Side). Scheme 233
NS12 (3 of 5) - Checking For System Power & Ground (Cont.). Scheme 234
NS12 (4 of 5) - Checking 60-Pin Connector & Distributor Pick-Up Harness Connector With Ohmmeter. Scheme 235
NS12 (5 of 5) - Checking For System Power & Ground (Cont.). Scheme 236
NS13 - DISTRIBUTOR PICK-UP & POWER FEED TO PICK-UP
Note. Perform NS11 before proceeding.
NS13 (1 of 3) - Checking Distributor Pick-Up & Power Feed To Pick-Up. Scheme 237
NS13 (2 of 3) - Checking Distributor Pick-Up Connector (Terminal End). Scheme 238
NS13 (3 of 3) - Checking Distributor Pick-Up & Power Feed To Pick-Up (Cont.). Scheme 239
NS14 - ASD RELAY CIRCUIT FAULT & PULL-IN COIL CKT (K-19)
Note. Perform NS11 before proceeding.
NS14 (1 of 4) - Checking ASD Relay Circuit Fault & Pull-In Coil Circuit (K19). Scheme 240
NS14 (2 of 4) - Location Of ASD Relay. Scheme 241
NS14 (3 of 4) - Checking ASD Relay Circuit (K14). Scheme 242
NS14 (4 of 4) - Checking ASD Relay Circuit Fault & Pull-In Coil Circuit K19 (Cont.). Scheme 243
NS15 - CHECKING FOR AN OPEN J2 CKT TO AUTO SHUTDOWN RELAY
Note. Perform NS11 before proceeding.
NS15 - Checking For An Open J2 Circuit To ASD Relay. Scheme 244
NS16 - MAP SENSOR 5-VOLT POWER SUPPLY
Note. Perform NS11 before proceeding.
NS16 (1 of 3) - Checking 5-Volt Power Supply To MAP Sensor. Scheme 245
NS16 (2 of 3) - Location Of MAP Sensor. Scheme 246
NS16 (3 of 3) - Checking MAP Sensor & 60-Pin Connectors For Continuity. Scheme 247
Scheme 248
Scheme 249
Scheme 250
Scheme 251
Scheme 252
Scheme 253
Scheme 254
No Start Verification. Scheme 255
DRIVEABILITY TEST
Note. Because of limited space in the menu screen, DRIVEABILITY tests will be titled DR. This will allow a description of the test to appear on the menu.
DR1 - CHECKING FOR SYSTEM FAULTS
Note. Perform PRELIMINARY INSPECTION Before Proceeding.
DR1 (1 of 13) - Checking System For Faults. Scheme 256
DR1 (2 of 13) - Checking System For Faults. Scheme 257
DR1 (3 of 13) - Checking System For Faults. Scheme 258
DR1 (4 of 13) - Checking System For Faults. Scheme 259
DR1 (5 of 13) - Checking System For Faults. Scheme 260
DR1 (6 of 13) - Checking System For Faults. Scheme 261
DR1 (7 of 13) - Checking System For Faults. Scheme 262
DR1 (8 of 13) - Checking System For Faults. Scheme 263
DR1 (9 of 13) - Checking System For Faults. Scheme 264
DR1 (10 of 13) - Checking System For Faults. Scheme 265
DR1 (11 of 13) - Checking System For Faults. Scheme 266
DR1 (12 of 13) - Checking System For Faults. Scheme 267
DR1 (13 of 13) - Checking System For Faults. Scheme 268
DR2 - CHECKING SMEC OUTPUT CKTS
Note. Perform DR1 Before Proceeding
DR2 (1 of 18) - Checking SMEC Output Circuits. Scheme 269
DR2 (2 of 18) - Location Of Solenoids. Scheme 270
DR2 (3 of 18) - Location of PTU Relay & A/C Clutch Relay. Scheme 271
DR2 (4 of 18) - Checking SMEC Output Circuits & Shift Indicator Lamp. Scheme 272
DR2 (5 of 18) - Checking Location Of Auto Shutdown Relay. Scheme 273
DR2 (6 of 18) - Checking Brake Switch Input Circuit To SMEC. Scheme 274
DR2 (7 of 18) - Checking Brake Switch Input Circuit To SMEC (Cont.). Scheme 275
DR2 (8 of 18) - Checking Idle Contact & Closed Throttle Switch. Scheme 276
DR2 (9 of 18) - Connecting Jumper To ISC Motor Connector. Scheme 277
DR2 (10 of 18) - Checking Switch Inputs To SMEC. Scheme 278
DR2 (11 of 18) - Location Of Quick-Disconnect Connector. Scheme 279
DR2 (13 of 18) - Checking 5-Volt Supply To Map Sensor. Scheme 281
DR2 (14 of 18) - Checking Automatic Idle Speed (ISC) Motor Operation. Scheme 282
DR2 (15 of 18) - Checking ISC Motor Connector. Scheme 283
DR2 (16 of 18) - Checking ISC Motor Connector (Cont.). Scheme 284
DR2 (17 of 18) - Checking Emission Maintenance Reminder Light. Scheme 285
DR2 (18 of 18) - Checking SMEC Ground Circuits. Scheme 286
DR3 - SOLENOID/RELAY INTERMITTENTS
Note. Perform DR1 before proceeding.
DR3 - Intermittent Test For Solenoids & Relays. Scheme 287
DR4 - MAP SENSOR INTERMITTENTS
Note. Perform DR1 before proceeding.
DR4 (1 of 2) - Intermittent Test For MAP Sensor Signal. Scheme 288
DR4 (2 of 2) - Location Of MAP Sensor. Scheme 289
DR5 - SENSOR VOLTAGE INTERMITTENTS
Note. Perform DR1 before proceeding.
DR5 - Intermittent Test For Sensor Voltages. Scheme 290
DR6 - INJECTORS & AIS MOTOR INTERMITTENTS
Note. Perform DR1 before proceeding.
DR6 - Intermittent Test For Injectors & AIS Motor. Scheme 291
DR7 - IDLE SWITCH INTERMITTENTS
Note. Perform DR1 before proceeding.
DR7 - Intermittent Test For Idle Switch. Scheme 292
DR7 - Location Of Idle Speed Control Motor. Scheme 293
DR8 - FAULT MESSAGE "MAP PNEUMATIC SIGNAL" (DTC 13)
Note. Perform DR1 before proceeding.
DR8 (1 of 2) - Checking For "MAP PNEUMATIC SIGNAL" Fault Message. Scheme 294
DR8 (2 of 2) - Location Of MAP Sensor. Scheme 295
DR9 - FAULT MESSAGE "MAP PNEUMATIC CHANGE" (DTC 13)
Note. Perform DR1 before proceeding.
DR9 - Checking For "MAP PNEUMATIC CHANGE" Fault Message. Scheme 296
DR10 - FAULT MESSAGE "MAP VOLTAGE LOW" (DTC 14)
Note. Perform DR1 before proceeding.
DR10 - Checking For "MAP VOLTAGE LOW" Fault Message. Scheme 297
DR11 - FAULT MESSAGE "MAP VOLTAGE HIGH" (DTC 14)
Note. Perform DR1 before proceeding.
DR11 - Checking For "MAP VOLTAGE TOO HIGH" Fault Message. Scheme 298
DR12 - FAULT MESSAGE "VEHICLE SPEED SIGNAL" (DTC 15)
Note. Perform DR1 before proceeding.
DR12 (1 of 3) - Checking For "VEHICLE SPEED SIGNAL" Fault Message. Scheme 299
DR12 (2 of 3) - Checking For "VEHICLE SPEED SIGNAL" Fault Message (Cont.). Scheme 300
DR12 (3 of 3) - Checking Speed Sensor & 60-Pin Connectors. Scheme 301
DR13 - FAULT MESSAGE "OXYGEN SENSOR SIGNAL" (DTC 21)
Note. Perform DR1 before proceeding.
DR13 (1 of 4) - Checking For "OXYGEN SENSOR SIGNAL" Fault Message. Scheme 302
DR13 (2 of 4) - Checking Oxygen Sensor Harness Connector. Scheme 303
DR13 (3 of 4) - Location Of Oxygen Sensor Harness Connector. Scheme 304
DR13 (4 of 4) - Checking For "OXYGEN SENSOR SIGNAL" Fault Message (Cont.). Scheme 305
DR14 - FAULT MESSAGE "COOLANT VOLTS LOW" (DTC 22)
Note. Perform DR1 before proceeding.
DR14 - Checking For "COOLANT VOLTAGE LOW" Fault Message. Scheme 306
DR15 - FAULT MESSAGE "COOLANT VOLTAGE HIGH" (DTC 22)
Note. Perform DR1 before proceeding.
DR15 (1 of 2) - Checking For "COOLANT VOLTAGE HIGH" Fault Message. Scheme 307
DR15 (2 of 2) - Location Of Coolant Sensor Connector. Scheme 308
DR16 - FAULT MESSAGE "THROTTLE BODY TEMPERATURE LOW" (DTC 23)
Note. Perform DR1 before proceeding.
DR16 (1 of 3) - Checking For "THROTTLE BODY TEMPERATURE LOW" Fault Message. Scheme 309
DR16 (2 of 3) - Location Of Throttle Body Temperature Sensor. Scheme 310
DR16 (3 of 3) - Connecting Jumper To Throttle Body Temperature Sensor Connector. Scheme 311
DR17 - FAULT MESSAGE "THROTTLE BODY TEMPERATURE HIGH" (DTC 23)
Note. Perform DR1 before proceeding.
DR17 (1 of 3) - Checking For "THROTTLE BODY TEMPERATURE HIGH" Fault Message. Scheme 312
DR17 (2 of 3) - Location Of Throttle Body Temperature Sensor. Scheme 313
DR18 - FAULT MESSAGE "TPS VOLTAGE LOW" (DTC 24)
Note. Perform DR1 before proceeding.
DR18 (1 of 3) - Checking For "TPS VOLTAGE LOW" Fault Message. Scheme 314
DR18 (2 of 3) - Location Of Throttle Position Sensor. Scheme 315
DR18 (3 of 3) - Connecting Jumper To Throttle Body Temperature Sensor Connector. Scheme 316
DR19 - FAULT MESSAGE "TPS VOLTAGE HIGH (DTC 24)
Note. Perform DR1 before proceeding.
DR19 (1 of 2) - Checking For "TPS VOLTAGE HIGH" Fault Message. Scheme 317
DR20 - FAULT MESSAGE "AIS MOTOR CIRCUITS" (DTC 25)
Note. Perform DR1 before proceeding.
DR20 (1 of 3) - Checking For "AIS MOTOR CIRCUITS" Fault Message. Scheme 318
DR20 (2 of 3) - Checking AIS Motor Connector. Scheme 319
DR20 (3 of 3) - Checking For "AIS MOTOR CIRCUITS" Fault Message (Cont.). Scheme 320
DR21 - FAULT MESSAGE "PURGE SOLENOID CKT" (DTC 31)
Note. Perform DR1 before proceeding.
DR21 (1 of 5) - Checking For "PURGE SOLENOID CKTS" Fault Message. Scheme 321
DR21 (2 of 5) - Checking Female Harness Connector. Scheme 322
DR21 (3 of 5) - Checking Purge Solenoid Connector. Scheme 323
DR21 (4 of 5) - Checking For "PURGE SOLENOID CKTS" Fault Message (Cont.). Scheme 324
DR21 (5 of 5) - Canister Purge Solenoid. Scheme 325
DR22 - FAULT MESSAGE "EGR SOLENOID CKT" (DTC 32)
Note. Perform DR1 before proceeding.
DR22 (1 of 3) - Checking For "EGR SOLENOID CKTS" Fault Message. Scheme 326
DR22 (2 of 3) - Location Of Solenoids. Scheme 327
DR22 (3 of 3) - Testing EGR Solenoid Connector. Scheme 328
DR23 - FAULT MESSAGE "EGR SYSTEM FAILURE" (DTC 32)
Note. Perform DR1 before proceeding.
DR23 (1 of 5) - Checking For "EGR SYSTEM FAILURE" Fault Message. Scheme 329
DR23 (2 of 5) - Location Of Idle Speed Control Motor Connector. Scheme 330
DR23 (3 of 5) - Location Of Bleed Filter. Scheme 331
DR23 (4 of 5) - Checking For "EGR SYSTEM FAILURE" Fault Message (Cont.). Scheme 332
DR23 (5 of 5) - View Of EGR Valve & EGR Backpressure Valve. Scheme 333
DR24 - FAULT MESSAGE "A/C CLUTCH RELAY CKT" (DTC 33)
Note. Perform DR1 before proceeding.
DR24 (1 of 3) - Checking For "A/C CLUTCH RELAY CKT" Fault Message. Scheme 334
DR24 (2 of 3) - Testing A/C Cut-Out Relay For Continuity. Scheme 335
DR24 (3 of 3) - Testing A/C Cut-Out Relay Connector. Scheme 336
DR25 - FAULT MESSAGE "IDLE SWITCH SHORTED" (DTC 35)
Note. Perform DR1 before proceeding.
DR25 - Checking For "IDLE SWITCH SHORTED" Fault Message. Scheme 337
DR26 - FAULT MESSAGE "IDLE SWITCH OPENED" (DTC 35)
Note. Perform DR1 before proceeding.
DR26 - Checking For "IDLE SWITCH OPENED" Fault Message. Scheme 338
DR26 - View Of ISC Motor. Scheme 339
DR26 - Checking ISC Motor Connector For Continuity. Scheme 340
DR27 - FAULT MESSAGE "AIR SWITCH SOLENOID" (DTC 36)
Note. Perform DR1 before proceeding.
DR27 (1 of 6) - Checking For "AIR SWITCH SOLENOID" Fault Message. Scheme 341
DR27 (2 of 6) - Testing Engine Harness 8-Pin Connector. Scheme 342
DR27 (4 of 6) - Testing Air Switch Solenoid Connector. Scheme 343
DR27 (5 of 6) - Checking For "AIR SWITCH SOLENOID" Fault Message (Cont.). Scheme 344
DR27 (6 of 6) - Testing Air Switch Solenoid. Scheme 345
DR28 - FAULT MESSAGE "PTU SOLENOID CIRCUIT" (NON-OVERDRIVE) (DTC 37)
Note. Perform DR1 before proceeding.
DR28 (1 of 4) - Checking For "PTU SOLENOID CIRCUIT" Fault Message (Non-Overdrive Transmission). Scheme 346
DR28 (2 of 4) - Location Of Relays. Scheme 347
DR28 (3 of 4) - Testing Transmission Lock-Up Relay. Scheme 348
DR28 (4 of 4) - Checking For "PTU SOLENOID CIRCUIT" Fault Message (Non-Overdrive Transmission) (Cont.). Scheme 349
DR29 - FAULT MESSAGE "PTU SOLENOID CIRCUIT (OVERDRIVE) (DTC 37)
Note. Perform DR1 before proceeding.
DR29 (1 of 2) - Checking For "PTU SOLENOID CIRCUIT" Fault Message (Overdrive Transmission). Scheme 350
DR29 (2 of 2) - Testing Transmission Overdrive Solenoid Connector. Scheme 351
DR30 - FAULT MESSAGE "FJ2 VOLTAGE SENSE" (DTC 44)
Note. Perform DR1 before proceeding.
DR30 - Checking For "FJ2 VOLTAGE SENSE" Fault Message. Scheme 352
DR31 - FAULT MESSAGE "OVERDRIVE SOLENOID (DTC 45)
Note. Perform DR1 before proceeding.
DR31 (1 of 3) - Checking For "OVERDRIVE SOLENOID" Fault Message. Scheme 353
DR31 (2 of 3) - Checking For "OVERDRIVE SOLENOID" Fault Message (Cont.). Scheme 354
DR31 (1 of 3) - Checking Overdrive Solenoid Connector. Scheme 355
DR32 - MESSAGES "EMR MILEAGE ACCUM" & "EEPROM WRITE DENIED" (DTC 62 & 63)
Note. Perform DR1 before proceeding.
DR32 - Checking For "EMR MILEAGE ACCUM" & "EEPROM WRITE DENIED" Fault Messages. Scheme 356
DR33 - CHECKING SENSOR CALIBRATIONS (COLD)
Note. Perform DR1 before proceeding.
DR33 (1 of 4) - Checking Sensor Calibrations (Cold). Scheme 357
DR33 (2 of 4) - Checking Sensor Calibrations (Cold, Cont.). Scheme 358
DR33 (3 of 4) - Location Of MAP Sensor. Scheme 359
DR33 (4 of 4) - Checking Sensor Calibrations (Cold, Cont.). Scheme 360
DR34 - SPARK PLUGS & HEATED AIR INTAKE SYSTEM
Note. Perform DR33 before proceeding.
DR34 (1 of 3) - Checking Spark Plugs & Heated Air Intake System. Scheme 361
DR34 (2 of 3) - Location Of Vacuum Hose To Be Disconnected. Scheme 362
DR34 (3 of 3) - Attaching Vacuum Gauge To Air Temperature Sensor. Scheme 363
DR35 - CHECKING SENSOR CALIBRATIONS (WARM)
Note. Perform DR33 before proceeding.
DR35 (1 of 5) - Checking Sensor Calibrations (Warm). Scheme 364
DR35 (2 of 5) - Checking Sensor Calibrations (Warm, Cont.). Scheme 365
DR35 (3 of 5) - Checking Sensor Calibrations (Warm, Cont.). Scheme 366
DR35 (5 of 5) - Checking Heated Air Door Operation (Cont.). Scheme 367
DR36 - EGR VALVE OPERATION
Note. Perform DR33 and DR35 before proceeding.
DR36 (1 of 4) - Checking EGR Valve Operation. Scheme 368
DR36 (2 of 4) - Checking EGR Valve Operation (Cont.). Scheme 369
DR36 (3 of 4) - Location Of Solenoids. Scheme 370
DR36 (4 of 4) - View Of EGR Solenoid Vacuum Connector. Scheme 371
DR37 - AIR SWITCHING SYSTEM
Note. Perform DR36 before proceeding.
DR37 (1 of 5) - Checking Air Switching System. Scheme 372
DR37 (2 of 5) - Location Of Upstream & Downstream Hoses. Scheme 373
DR37 (3 of 5) - Disconnecting Vacuum Hose. Scheme 374
DR37 (4 of 5) - Connecting Vacuum Pump To Air Switching Valve. Scheme 375
DR37 (5 of 5) - Location Of Solenoids. Scheme 376
DR38 - SECONDARY IGNITION SYSTEM
Note. Perform DR37 before proceeding.
DR38 - Checking Secondary Ignition System. Scheme 377
DR39 - BASIC TIMING & FUEL SYSTEM
Note. Perform DR38 before proceeding.
DR39 (1 of 10) - Checking Basic Timing & Fuel System. Scheme 378
DR39 (2 of 10) - Location Of Fuel Injector Connector. Scheme 379
DR39 (3 of 10) - Checking Fuel Injector Connector. Scheme 380
DR39 (4 of 10) - Connecting Pressure Gauge To Return Line. Scheme 381
DR39 (5 of 10) - Checking Basic Timing & Fuel System (Cont.). Scheme 382
DR39 (6 of 10) - Location Of Fuel Return System (Fuel Tank End). Scheme 383
DR39 (7 of 10) - Location Of Fuel Return Hose. Scheme 384
DR39 (8 of 10) - Checking Basic Timing & Fuel System (Cont.). Scheme 385
DR39 (9 of 10) - Testing Fuel Return Pressure. Scheme 386
DR39 (10 of 10) - View Of Fuel Pump/Gauge Connector. Scheme 387
DR40 - O2 SENSOR FUNCTION
Note. Perform DR39 before proceeding.
DR40 (1 of 3) - Checking Oxygen Sensor Function. Scheme 388
DR40 (2 of 3) - Checking Oxygen Sensor Function (Cont.). Scheme 389
DR40 (3 of 3) - Checking Oxygen Sensor Function (Cont.). Scheme 390
DR41 - CHECKING THROTTLE BODY MINIMUM AIRFLOW
Note. Perform DR40 before proceeding.
DR41 - Checking Throttle Body Minimum Airflow. Scheme 391
DR42 - CHECKING THROTTLE BODY MAXIMUM AIRFLOW
Note. Perform DR41 before proceeding.
DR42 (1 of 2) - Checking Throttle Body Maximum Airflow. Scheme 392
DR42 (2 of 2) - Checking Throttle Body Maximum Airflow. Scheme 393
DR43 - OTHER POSSIBLE CAUSES
Note. Perform DR42 before proceeding.
At this point in the DRIVEABILITY TESTS you have determined that all of the engine control systems are operating as they were designed. Therefore, they are NOT THE CAUSE OF THE DRIVEABILITY PROBLEM.
The following items should be checked as possible causes
- ENGINE VACUUM - Must be at least 13 inches in neutral.
- ENGINE VALVE TIMING - Set to specifications.
- ENGINE COMPRESSION - To specifications.
- ENGINE EXHAUST SYSTEM - Must be free of any restrictions.
- ENGINE PCV SYSTEM - Must flow freely.
- ENGINE DRIVE SPROCKETS - Ensure they all are in good condition.
- TORQUE CONVERTER STALL SPEED - To specifications.
- POWER BRAKE BOOSTER - No internal vacuum leaks.
- FUEL CONTAMINATION - Check for high alcohol and water content.
- TECHNICAL SERVICE BULLETINS - Any that may apply to the vehicle.
Any one or more of these items can create a driveability related problem. They can not be overlooked as possible causes.
VERIFICATION TEST
Note. Because of limited space in the menu screen, DRIVEABILITY VERIFICATION tests will be titled VER. This will allow a description of the test to appear on the menu.
VER1 (1 of 2) - Driveability Verification Test 1. Scheme 394
VER1 (2 of 2) - Driveability Verification Test 1. Scheme 395
VER2 (1 of 2) - Driveability Verification Test 2. Scheme 396
VER2 (2 of 2) - Driveability Verification Test 2. Scheme 397
SPEED CONTROL TEST
Note. Because of limited space in the menu screen, SPEED CONTROL tests will be titled SP. This will allow a description of the test to appear on the menu.
SP1 - VISUAL INSPECTION
- Before performing any of the following SPEED CONTROL tests, visually inspect the following: Brake lamp switch connector. Speed control switch connector. Speed control fuse. Speed control servo connector. Speed control vacuum supply. Speed control linkage
- If repair is made during the inspection of any of the above components, road test vehicle while checking for proper speed control function.
- If no problems are detected during the visual inspection, or if the speed control continues to malfunction after the road test in step 2), go to «SP2 - CHECKING SPEED CONTROL SYSTEM FOR FAULT CODES»(/dodge/dakota-shelby/1989-1989/remont/testing-diagnostics/#v6-v8-tbi-tests-wcodes__sp2-checking-speed-control-system) .
SP1 - Visual Inspection (1 of 4). Scheme 398
SP1 - Visual Inspection (2 of 4). Scheme 399
SP1 - Visual Inspection (3 of 4). Scheme 400
SP1 - Visual Inspection (4 of 4). Scheme 401
SP2 - CHECKING SPEED CONTROL SYSTEM FOR FAULT CODES
Note. Perform SP1 before proceeding.
SP2 (1 of 2) - Checking Speed Control System For Fault Codes. Scheme 402
SP2 (2 of 2) - Location Of Diagnostic Connector. Scheme 403
SP3 - FAULT CODE 34
Note. Perform SP2 before proceeding.
SP3 (1 of 5) - Checking For Fault Code 34. Scheme 404
SP3 (2 of 5) - Location Of Speed Control Servo Connector. Scheme 405
SP3 (3 of 5) - Testing Speed Control Servo Connector. Scheme 406
SP3 (4 of 5) - Location Of Brake Switch Connector. Scheme 407
SP3 (5 of 5) - Checking For Fault Code 34 (Cont.). Scheme 408
SP4 - SPEED CONTROL SWITCH
Note. Perform SP3 before proceeding.
SP4 - Testing Speed Control Switch. Scheme 409
SP5 - BRAKE SWITCH CIRCUIT
Note. Perform SP3 before proceeding.
SP5 (1 of 5) - Testing Brake Switch Circuit. Scheme 410
SP5 (2 of 5) - Testing Brake Switch Connector. Scheme 411
SP5 (3 of 5) - Testing Park/Neutral Input. Scheme 412
SP5 (4 of 5) - Testing Servo Connector Ground. Scheme 413
SP5 (5 of 5) - Testing Servo Actuator. Scheme 414
SP6 - ON/OFF SWITCH & STALK FEED
Note. Perform SP3 before proceeding.
SP6 (1 of 2) - Checking ON/OFF & Stalk Feed Circuit. Scheme 415
SP6 (2 of 2) - Location Of ON/OFF & Stalk Feed Connector. Scheme 416
SP7 - "RESUME" SWITCH TEST
Note. Perform SP3 before proceeding.
SP7 - Testing The "RESUME" Switch. Scheme 417
SP8 - "SET" SWITCH TEST
Note. Perform SP3 before proceeding.
SP8 - Testing The "SET" Switch. Scheme 418
CHARGING SYSTEM TEST
Note. Because of limited space in the menu screen, CHARGING SYSTEM tests will be titled CH. This allows a description of the test to appear on the menu.
CH1 - Checking Charging System For Fault Codes. Scheme 419
CH2 - FAULT CODE 16 "LOSS OF BATTERY VOLTAGE SENSE"
Note. Perform CH1 before proceeding.
CH2 - Checking For Fault Code 16 "LOSS OF BATTERY VOLTAGE SENSE". Scheme 420
CH3 - FAULT CODE 46 "BATTERY VOLTAGE TOO HIGH"
Note. Perform CH1 before proceeding.
CH3 (1 of 5) - Checking For Fault Code 46 "BATTERY VOLTAGE TOO HIGH". Scheme 421
CH3 (2 of 5) - Separating 14-Pin Connector. Scheme 422
CH3 (3 of 5) - Testing Pins No. 14 & 11 With Voltmeter. Scheme 423
CH3 (4 of 5) - Testing Pin No. 14 With DRB-II. Scheme 424
CH3 (5 of 5) - Checking For Fault Code 46 "BATTERY VOLTAGE TOO HIGH" (Cont.). Scheme 425
CH4 - FAULT CODE 47 "BATTERY VOLTAGE TOO LOW"
Note. Perform CH1 before proceeding.
CH4 (1 of 5) - Checking For Fault Code 47 "BATTERY VOLTAGE TOO LOW". Scheme 426
CH4 (2 of 5) - View Of Alternator Terminals. Scheme 427
CH4 (3 of 5) - Location Of J2 Splice. Scheme 428
CH4 (4 of 5) - Checking For Fault Code 47 "BATTERY VOLTAGE TOO LOW" (Cont.). Scheme 429
CH5 - INTERMITTENT CODES
Note. Perform CH1 before proceeding.
CH5 (1 of 3) - Checking For Intermittent Fault Codes. Scheme 430
CH5 (2 of 3) - Location Of ASD Relay. Scheme 431
CH5 (3 of 3) - Location Of Alternator R3 Field Terminal. Scheme 432
CH6 - CHECKING CHARGING SYSTEM WITHOUT CODES
Note. Perform CH1 before proceeding.
CH6 - Checking Charging System With No Codes. Scheme 433
Dakota 3.9L TBI Wiring Diagram. Scheme 434
Pickup & Ramcharger 3.9L, 5.2L & 5.9L TBI Wiring Diagram. Scheme 435
Van 5.2L & 5.9L TBI Wiring Diagram. Scheme 436
Removal & Installation
Remove vacuum hose. Remove wiring harness. Remove mounting screws. Remove sensor. (Scheme 193) To install, reverse removal procedure.
Disconnect negative battery cable. Disconnect 3-pin sensor wiring connector. Remove 2 screws attaching sensor to throttle body. Lift sensor from throttle shaft. (Scheme 443) To install, reverse removal procedure.
Scheme 437
Disconnect negative battery cable. Remove air cleaner duct from SMEC. Remove 3 module screws. Remove 2 wiring connectors from SMEC. Remove SMEC. To install, reverse removal procedure.
Removal
Remove air cleaner. Disconnect negative battery cable. Disconnect 4-pin ISC wiring connector. Remove 3 nuts attaching actuator to throttle body bracket. Remove actuator from throttle body bracket.
Installation
- Install actuator onto throttle body bracket. Tighten 3 mounting screws. Connect 4-pin connector. Reconnect negative battery cable.
- Start engine and idle for 2 minutes. Turn engine off. Wait 60 seconds to allow actuator to fully engage. Remove actuator wiring connector. Disconnect coolant temperature sensor.
- Connect tachometer to engine. Start engine. Adjust actuator extension screw until RPM is within specification. Specification is 2500-2600 RPM for 3.9L engine and 2750-2850 RPM for 5.2L and 5.9L engines. Turn engine off. Reconnect actuator wiring and coolant temperature sensor connector.
Disconnect battery ground cable. Disconnect wiring harness and vacuum hose (if equipped) from relay. Remove attaching screws and relay(s). (Scheme 432), (Scheme 433) and (Scheme 434). To install, reverse removal procedure.
Scheme 438
Scheme 439
Scheme 440
HEATED OXYGEN SENSOR
| CAUTION | DO NOT pull on sensor wire. |
Disconnect sensor harness connector. Using Socket (C-4907 ), remove sensor. (Scheme 435)or (Scheme 436). Clean threads in exhaust manifold using an 18 mm x 1.5 x 6E tap. Coats threads of sensor with anti-seize compound (Loctite 771-64 ). Tighten sensor to 20 ft. lbs. (27 N.m).
Scheme 441
Scheme 442
Remove vacuum hose. Remove electrical connector. Remove mounting nut. Remove solenoids. (Scheme 443) To install, reverse removal procedure.
Scheme 443
See also:
• CLEARING CODES
• ENTERING ON-BOARD DIAGNOSTICS
• 11
• 13
• 13
• 14
• 14
• 15
• 16
• 21
• 22
• 22
• 23
• 23
• 24
• 24
• 25
• 26
• 27
• 31
• 32
• 32
• 33
• 34
• 35
• 35
• 37
• 37
• 41
• 42
• 43
• 44
• 45
• 46
• 47
• 51
• 62
• PRELIMINARY INSPECTION
• NS1
• NS2
• NS4
• NS6
• NS11
• DR1
• DR33
• DR36
• DR37
• DR38
• DR39
• DR40
• DR41
• DR42
• SP2 - CHECKING SPEED CONTROL SYSTEM FOR FAULT CODES
• SP1