MODEL IDENTIFICATION
| CAUTION | When 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 before disconnecting battery. |
Vehicle body codes are used throughout self-diagnostic tests. See BODY CODE DESIGNATION table for model identification.
| Model Name | Body Type | |
|---|---|---|
| Chrysler Corp. | ||
| Ram Van | AB | |
| Ram Wagon | AB | |
BODY CODE DESIGNATION
CONNECTOR IDENTIFICATION
Note. The following terminals are shown as viewed from harness side of connector. Only connectors with 3 or more terminals (pins) are included. For circuit identification and wiring diagram, see RAM VAN & RAM WAGON wiring diagram in WIRING DIAGRAMS article.
| Connector | Illustration |
|---|---|
| Accelerator Pedal Position Sensor | (Scheme 8) |
| Brakelight Switch | (Scheme 9) |
| Camshaft Position Sensor | (Scheme 10) |
| Controller Anti-Lock Brakes | (Scheme 11) |
| Crankshaft Position Sensor | (Scheme 12) |
| Data Link Connector | (Scheme 13) |
| Fuel Pump Module | (Scheme 14) |
| Governor Pressure Sensor | (Scheme 15) |
| Idle Air Control Motor | (Scheme 16) |
| Leak Detection Pump | (Scheme 17) |
| Manifold Absolute Pressure Sensor | (Scheme 18) |
| Park/Neutral Position Switch | (Scheme 19) |
| Powertrain Control Module | (Scheme 20) |
| Throttle Position Sensor | (Scheme 21) |
| Transmission Solenoid | (Scheme 22) |
| Vehicle Speed Sensor | (Scheme 23) |
| 1/1-1/3 Heated Oxygen Sensor (Typical) | (Scheme 24) |
CONNECTOR IDENTIFICATION
Scheme 8
Scheme 9
Scheme 10
Scheme 11
Scheme 12
Scheme 13
Scheme 14
Scheme 15
Scheme 16
Scheme 17
Scheme 18
Scheme 19
Scheme 20
Scheme 21
Scheme 22
Scheme 23
Scheme 24
NTC-21A: CHECKING RADIATOR FAN OPERATION
- Turn ignition on, with engine off. Using scan tool, actuate radiator fan relay. If radiator fan comes on and off, radiator fan SYSTEM is operating properly. Test is complete. Perform TEST VER-2A. If radiator fan does not come on and off, go to next step. NOTE: For connector terminal identification, see «CONNECTOR IDENTIFICATION»(ref-139160-S09977502222002042600000) . For circuit identification and wiring diagram, see «RAM VAN & RAM WAGON»(/dodge/ram-wagon-b1500/1996-2002/remont/wiring-diagrams-engine-performance/#engine-performance-wiring-diagrams) wiring diagram in WIRING DIAGRAMS article.
- Ensure ignition is on, with engine off. Using a 12-volt test light connected to ground, backprobe radiator fan motor connector, control output circuit. If test light blinks, go to next step. If test light does not blink, go to step 5).
- Turn ignition off. Disconnect radiator fan motor connector. Clean and/or repair connector and terminals as necessary. Using an ohmmeter, check resistance between ground and radiator fan motor connector, ground circuit. If resistance is 5 ohms or more, repair open ground circuit. Perform TEST VER-2A. If resistance is less than 5 ohms, go to next step.
- At this time, radiator fan motor is assumed to be defective. Replace radiator fan motor. Perform TEST VER-2A.
- Turn ignition off. Remove radiator fan relay. Radiator fan relay is located in Power Distribution Center (PDC). PDC is located next to battery. Refer to label under PDC cover for relay location. Clean and/or repair connector as necessary. Using a 12-volt test light connected to ground, probe radiator fan relay connector, fused B+ circuit. If test light illuminates brightly, go to next step. If test light does not illuminate brightly, check radiator fan fuse in PDC and repair open B+ circuit. Perform TEST VER-2A.
- Ensure ignition is off. Ensure radiator fan relay is still remove. Disconnect radiator fan motor connector. Clean and/or repair connector as necessary. Using an ohmmeter, check resistance of output circuit between radiator fan relay and radiator fan motor. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open output circuit. Perform TEST VER-2A.
- At this time, radiator fan relay is assumed to be defective. Replace radiator fan relay. Perform TEST VER-2A.
See also:
• VEHICLE COMMUNICATIONS
• RAM VAN & RAM WAGON