TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the DRB from the DLC.
Measure the resistance of the SCI Transmit circuit between the ECM harness
connector and the DLC.
Measure the resistance of the SCI Receive circuit between the ECM harness
connector and the DLC.
Is the resistance below 10.0 ohms for each measurement?
All
Yes
→
Go To
5
No
→
Repair the SCI circuit(s) for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIE-
SEL).
5
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the DRB from the DLC.
Measure the resistance between the SCI Transmit and SCI Receive circuits at the
DLC.
Is the resistance below 10.0 ohms?
All
Yes
→
Repair the SCI circuit(s) for a short together.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIE-
SEL).
No
→
Go To
6
6
Turn the ignition off.
Using the Service Information inspect the SCI Transmit and SCI Receive circuits
between the DLC and ECM.
Check the wiring and connectors for damage, corrosion or other problems that may
cause circuit interruption.
Are there any problems evident?
All
Yes
→
Repair as wiring/ connectors necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIE-
SEL).
No
→
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIE-
SEL).
273
COMMUNICATION
*NO RESPONSE FROM ECM (SCI ONLY) - DIESEL ONLY —
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...