TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t
, read HVAC DTCs.
Does the DRBIII
t
display additional HVAC DTCs?
All
Yes
→
Return to the symptom list and choose the symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
No
→
Go To
2
2
Turn the ignition on.
With the DRBIII
t
, check the PCM for any DTCs.
Are any DTCs present?
All
Yes
→
Refer to the Powertrain Diagnostic Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→
Go To
3
3
Turn the ignition on.
With the DRB in HVAC, Monitor Display, PCI Bus Msgs, look for the applicable
message and displayed value (
9
A/C Hi Side Press: XX,
9 9
Veh Spd: XX,
9 9
Eng RPM:
XX,
9 9
Coolant Temp: XX,
9 9
Batt Volts: XX,
9 9
Batt Temp: XX,
9 9
VIN Msg Pres: YES
9
).
Does the DRB display NO RESPONSE after the applicable message?
All
Yes
→
Refer to symptom *No Response From PCM (PCI Bus) in the
Communication category.
Perform BODY VERIFICATION TEST - VER 1.
No
→
Replace the A/C - Heater Control Module in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
389
HEATING & A/C
ENGINE GAUGE RX FAILURE (ACTIVE) —
Continued
Summary of Contents for Ram 2004
Page 14: ...NOTES xiv...
Page 35: ...7 0 DIAGNOSTIC INFORMATION AND PROCEDURES 21...
Page 570: ...NOTES 556...
Page 574: ...NOTES 560...
Page 596: ...C O N N E C T O R P I N O U T S 582 CONNECTOR PINOUTS...
Page 600: ...C O N N E C T O R P I N O U T S 586 CONNECTOR PINOUTS...
Page 602: ...C O N N E C T O R P I N O U T S 588 CONNECTOR PINOUTS...
Page 603: ...C O N N E C T O R P I N O U T S 589 CONNECTOR PINOUTS...
Page 613: ...C O N N E C T O R P I N O U T S 599 CONNECTOR PINOUTS...
Page 621: ...10 2 2 BASE AUDIO SYSTEM S C H E M A T I C D I A G R A M S 607 SCHEMATIC DIAGRAMS...
Page 625: ...10 3 4 ECM COMMUNICATION DIESEL S C H E M A T I C D I A G R A M S 611 SCHEMATIC DIAGRAMS...
Page 626: ...10 4 DOOR AJAR SYSTEM S C H E M A T I C D I A G R A M S 612 SCHEMATIC DIAGRAMS...
Page 629: ...10 6 EXTERIOR LIGHTS S C H E M A T I C D I A G R A M S 615 SCHEMATIC DIAGRAMS...
Page 630: ...10 7 HEATING A C SYSTEM S C H E M A T I C D I A G R A M S 616 SCHEMATIC DIAGRAMS...
Page 632: ...10 9 INSTRUMENT CLUSTER S C H E M A T I C D I A G R A M S 618 SCHEMATIC DIAGRAMS...
Page 633: ...10 10 OVERHEAD CONSOLE S C H E M A T I C D I A G R A M S 619 SCHEMATIC DIAGRAMS...
Page 634: ...10 11 POWER DOOR LOCKS S C H E M A T I C D I A G R A M S 620 SCHEMATIC DIAGRAMS...
Page 636: ...10 13 VEHICLE THEFT SECURITY SYSTEM S C H E M A T I C D I A G R A M S 622 SCHEMATIC DIAGRAMS...
Page 637: ...10 14 WIPERS S C H E M A T I C D I A G R A M S 623 SCHEMATIC DIAGRAMS...
Page 638: ...NOTES 624...
Page 640: ...NOTES 626...
Page 642: ...Dealer Technical Operations 800 Chrysler Drive CIMS 486 02 76 Auburn Hills MI 48326 2757...
