TX FAILURE (ACTIVE) Dodge Pickup R2500

TX FAILURE (ACTIVE)

When Monitored: When the ignition is on.

Set Condition: This DTC will set if the A/C - Heater Control Module is unable to send a PCI Bus message.

1. ATTEMPT TO COMMUNICATE WITH THE HVAC MODULE
2. CHECK FOR ADDITIONAL HVAC DTCS
3. ATTEMPT TO COMMUNICATE WITH THE PCM AND MIC
4. A/C - HEATER CONTROL MODULE
5. INTERMITTENT WIRING PROBLEM

Scheme 312

Scheme 313

1. CHECK FOR INSTRUMENT CLUSTER (MIC) DTCS
2. INOPERATIVE BULB(S)
3. A/C - HEATER CONTROL MODULE
4. PANEL LAMPS DRIVER CIRCUIT OPEN
5. INSTRUMENT CLUSTER

Scheme 314

Scheme 315

1. AC COOLDOWN TEST NEEDS TO BE RUN
2. HVAC DOOR RECALIBRATION NEEDS TO BE RUN

Scheme 316

Scheme 317

1. HVAC DOOR RECALIBRATION FAILED
2. A/C - HEATER CONTROL MODULE

Scheme 318

1. CHECK FOR ACTUATOR CIRCUIT TEST FAULT MESSAGES
2. CHECK FOR ACTIVE HVAC DTCS
3. CHECK FOR HVAC DOOR RECALIBRATION FAULT MESSAGES
4. MODE DOOR ACTUATOR(S)/LINKAGE(S)/DOOR(S)
5. PASSENGER BLEND DOOR ACTUATOR/LINKAGE/DOOR
6. DRIVER BLEND DOOR ACTUATOR/LINKAGE/DOOR
7. RECIRCULATION DOOR ACTUATOR/LINKAGE/DOOR

Scheme 319

Scheme 320

Scheme 321

1. CHECK FOR ACTUATOR CIRCUIT TEST FAULT MESSAGES
2. CHECK FOR ACTIVE HVAC DTCS
3. CHECK FOR HVAC DOOR RECALIBRATION FAULT MESSAGES
4. MODE DOOR ACTUATOR(S)/LINKAGE(S)/DOOR(S)
5. BLEND DOOR ACTUATOR/LINKAGE/DOOR
6. RECIRCULATION DOOR ACTUATOR/LINKAGE/DOOR

Scheme 322

Scheme 323

Scheme 324

1. IPM FUSE #4
2. BLOWER MOTOR FEED CIRCUIT SHORTED TO GROUND
3. FUSED B(+) SHORTED TO GROUND
4. BLOWER MOTOR SHORTED TO GROUND
5. BLOWER MOTOR
6. BLOWER MOTOR HIGH DRIVER CIRCUIT OPEN
7. GROUND CIRCUIT OPEN
8. A/C - HEATER CONTROL MODULE OPEN
9. BLOWER MOTOR FEED CIRCUIT OPEN
10. FUSED B(+) CIRCUIT OPEN
11. IGNITION SWITCH OPEN

Scheme 325

Scheme 326

Scheme 327

1. BLOWER MOTOR DRIVER CIRCUIT(S) SHORTED TO GROUND
2. A/C - HEATER CONTROL MODULE
3. BLOWER MOTOR DRIVER CIRCUIT(S) SHORTED TO VOLTAGE
4. BLOWER MOTOR DRIVER CIRCUITS SHORTED TOGETHER
5. A/C - HEATER CONTROL MODULE - SPEEDS INCORRECT
6. BLOWER MOTOR DRIVER CIRCUIT(S) OPEN
7. BLOWER MOTOR RESISTOR BLOCK - OPEN SPEED

Scheme 328

Scheme 329

1. ATTEMPT TO COMMUNICATE WITH THE PCM
2. CHECK FOR HVAC RELATED DTCS IN THE PCM
3. CHECK FOR ACTIVE HVAC DTCS AND SYSTEM TEST FAULT MESSAGES
4. CHECK FOR HVAC RELATED DTCS IN THE PCM
5. MANUAL A/C SYSTEM TEST

Scheme 330

Scheme 331

1. CHECK FUSE #13
2. OPEN FUSED B+ CIRCUITS
3. FRONT CONTROL MODULE

Scheme 332

1. CHECK FUSE #11
2. OPEN FUSED B+ CIRCUITS
3. FRONT CONTROL MODULE

Scheme 333

1. OPEN B+ CIRCUIT
2. FRONT CONTROL MODULE

Scheme 334