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Symptom:
PCM MESSAGES NOT RECEIVED (EXPORT ONLY)
When Monitored and Set Condition:
PCM MESSAGES NOT RECEIVED (EXPORT ONLY)
When Monitored:
Continuously with the ignition on.
Set Condition:
The RKE/Thatcham Alarm Module does not receive any messages from
the PCM for at least 5 seconds.
POSSIBLE CAUSES
INTERMITTENT CONDITION
PCM COMMUNICATION FAILURE
PCI BUS CIRCUIT OPEN
RKE/THATCHAM ALARM MODULE - INTERNAL MALFUNCTION
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t
, attempt to communicate with the PCM.
Was the DRBIII
t
able to communicate with the PCM?
All
Yes
→
Go To
2
No
→
Refer to the Communication category and perform the appropri-
ate symptom.
Perform VTSS VERIFICATION TEST - 1A.
2
Turn the ignition on.
With the DRBIII
t
, attempt to communicate with the RKE/Thatcham Alarm Module.
Was the DRBIII
t
able to communicate with the RKE/Thatcham Alarm Module?
All
Yes
→
The condition that caused this symptom is currently not present.
Inspect the related wiring harness for a possible intermittent
condition.
Perform VTSS VERIFICATION TEST - 1A.
No
→
Go To
3
3
Turn the ignition off.
Disconnect the negative battery cable.
Disconnect the RKE/Thatcham Alarm Module 16-way harness connector.
Disconnect the DRBIII
t
from the data link connector.
Measure the resistance of the PCI Bus circuit between the data link connector and
the Thatcham Alarm Module connector.
Is the resistance below 5.0 ohms?
All
Yes
→
Replace the RKE/Thatcham Alarm Module.
Perform VTSS VERIFICATION TEST - 1A.
No
→
Repair the PCI Bus circuit for an open.
Perform VTSS VERIFICATION TEST - 1A.
958
VEHICLE THEFT/SECURITY
Summary of Contents for Caravan 2003
Page 24: ...NOTES xxiv ...
Page 64: ...NOTES 40 ...
Page 65: ...7 0 DIAGNOSTIC INFORMATION AND PROCEDURES 41 ...
Page 1080: ...C O N N E C T O R P I N O U T S 1056 CONNECTOR PINOUTS ...
Page 1119: ...10 2 2 BASE AUDIO SYSTEM S C H E M A T I C D I A G R A M S 1095 SCHEMATIC DIAGRAMS ...
Page 1123: ...10 3 3 FRONT ATC RHD S C H E M A T I C D I A G R A M S 1099 SCHEMATIC DIAGRAMS ...
Page 1125: ...10 4 COMMUNICATION S C H E M A T I C D I A G R A M S 1101 SCHEMATIC DIAGRAMS ...
Page 1130: ...10 6 EXTERIOR LIGHTING S C H E M A T I C D I A G R A M S 1106 SCHEMATIC DIAGRAMS ...
Page 1136: ...10 9 INTERIOR LIGHTING S C H E M A T I C D I A G R A M S 1112 SCHEMATIC DIAGRAMS ...
Page 1143: ...10 10 7 REAR BLOWER MOTOR S C H E M A T I C D I A G R A M S 1119 SCHEMATIC DIAGRAMS ...
Page 1145: ...10 11 MEMORY SYSTEM S C H E M A T I C D I A G R A M S 1121 SCHEMATIC DIAGRAMS ...
Page 1146: ...10 12 OVERHEAD CONSOLE S C H E M A T I C D I A G R A M S 1122 SCHEMATIC DIAGRAMS ...
Page 1147: ...10 13 POWER DOOR LOCKS RKE S C H E M A T I C D I A G R A M S 1123 SCHEMATIC DIAGRAMS ...
Page 1150: ...10 16 POWER LIFTGATE SYSTEM S C H E M A T I C D I A G R A M S 1126 SCHEMATIC DIAGRAMS ...
Page 1155: ...10 20 VEHICLE THEFT SECURITY SYSTEM S C H E M A T I C D I A G R A M S 1131 SCHEMATIC DIAGRAMS ...
Page 1157: ...10 21 WIPERS FRONT AND REAR S C H E M A T I C D I A G R A M S 1133 SCHEMATIC DIAGRAMS ...
Page 1158: ...NOTES 1134 ...
Page 1160: ...11 2 PCI BUS LAB SCOPE PATTERN C H A R T S A N D G R A P H S 1136 CHARTS AND GRAPHS ...