Chrysler 300M 2002 Service Manual page 2823

COMMUNICATION
Symptom:
*NO RESPONSE FROM TRANSMISSION CONTROL MODULE
NO RESPONSE FROM TRANSMISSION CONTROL MODULE
FUSED IGNITION SWITCH OUTPUT (RUN/ST) CIRCUIT OPEN
FUSED IGNITION SWITCH OUTPUT (START) CIRCUIT OPEN
FUSED B(+) CIRCUIT OPEN
GROUND CIRCUIT(S) OPEN
POWERTRAIN CONTROL MODULE
PCI BUS CIRCUIT OPEN
BODY CONTROL MODULE
TEST
1 Turn the ignition on.
Note: As soon as one or more module communicates with the DRB, answer
the question.
With the DRB, attempt to communicate with the Instrument Cluster.
With the DRB, attempt to communicate with the Body Control Module (BCM).
Was the DRB able to I/D or establish communications with both of the modules?
Yes → Go To 2
No
2 Turn the ignition off.
Disconnect the PCM harness connectors.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the Fused Ignition Switch
Output (Run/St) circuit in the Pinout Box.
Note: The light must illuminate brightly, if it does not light, or lights dimly,
the circuit must be repaired. If there is any doubt, compare the brightness
when testing the circuit, to the brightness when connected directly to the
battery positive post.
Is the test light illuminated?
Yes → Go To 3
No
POSSIBLE CAUSES
ACTION
→ Refer to the Communications category and perform the appropri-
ate symptom.
Perform 42LE TRANSMISSION VERIFICATION TEST - VER 1.
→ Repair the Fused Ignition Switch Output (Run/St) circuit for an
open. Refer to the wiring diagrams located in the Service Infor-
mation.
Perform 42LE TRANSMISSION VERIFICATION TEST - VER 1.
24
APPLICABILITY
All
All