Chrysler Crossfire. Manual — part 167
*NO RESPONSE FROM SHIFT LEVER ASSEMBLY
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ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
8E - 45
*NO RESPONSE FROM SHIFT LEVER ASSEMBLY (CONTINUED)
POSSIBLE CAUSES
TRACTION SYSTEM RELAY OUTPUT CIRCUIT OPEN
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
GROUND CIRCUIT OPEN
SCI TRANSMIT CIRCUIT OPEN
SCI TRANSMIT CIRCUIT SHORTED TO GROUND
SCI TRANSMIT CIRCUIT SHORTED TO VOLTAGE
CONTROLLER ANTILOCK BRAKE
SHIFT LEVER ASSEMBLY
For a complete Data Link Connector Circuit Diagram, (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MOD-
ULES - SCHEMATICS AND DIAGRAMS).
Diagnostic Test
1.
CHECK COMMUNICATION WITH OTHER MODULES
Turn the ignition on.
Using the DRB III
T
, attempt to communicate with the PCM.
Is the DRB III
T
able to communicate with the PCM?
Yes
>> Go to 2
No
>> Perform Symptom *No Response From All Modules.
2.
CHECK COMMUNICATION WITH OTHER MODULES ON SCI TRANSMIT CIRCUIT
With the ignition on.
Using the DRB III
T
, attempt to communicate with the Controller
Antilock Brake.
Is the DRB III
T
able to communicate with the Controller Antilock
Brake?
Yes
>> Go to 3
No
>> Go to 7
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ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
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*NO RESPONSE FROM SHIFT LEVER ASSEMBLY (CONTINUED)
3.
TRACTION SYSTEM RELAY OUTPUT CIRCUIT OPEN
Turn the ignition off.
Disconnect the SLA harness connector.
Note: Check connector — Clean/repair as necessary.
Turn the ignition on.
Measure the voltage of the Traction System Relay Output circuit at the
SLA harness connector.
Is the voltage above 10 volts?
Yes
>> Go to 4
No
>> Repair the Traction System Relay Output circuit for an
open.
Perform NAG1 TRANSMISSION VERIFICATION TEST.
4.
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
With the ignition on.
Measure the voltage of the Fused Ignition Switch Output circuit at the
SLA harness connector.
Is the voltage above 10 volts?
Yes
>> Go to 5
No
>> Repair the Fused Ignition Switch Output circuit for an
open.
Perform NAG1 TRANSMISSION VERIFICATION TEST.
5.
GROUND CIRCUIT OPEN
Turn the ignition off.
Measure the resistance of the Ground circuit from the SLA harness
connector to ground.
Is the resistance below 5.0 ohms?
Yes
>> Go to 6
No
>> Repair the Ground circuit for an open.
Perform NAG1 TRANSMISSION VERIFICATION TEST.
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ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
8E - 47
*NO RESPONSE FROM SHIFT LEVER ASSEMBLY (CONTINUED)
6.
SCI TRANSMIT CIRCUIT OPEN
With the ignition off.
Measure the resistance of the SCI Transmit circuit from the SLA har-
ness connector to the DLC.
Is the resistance below 5.0 ohms?
Yes
>> Replace the Shift Lever Assembly. (Refer to 21 - TRANS-
MISSION/TRANSAXLE/AUTOMATIC
-
NAG1/SHIFT
MECHANISM - REMOVAL).
Perform NAG1 TRANSMISSION VERIFICATION TEST.
No
>> Repair the SCI Transmit circuit for an open.
Perform NAG1 TRANSMISSION VERIFICATION TEST.
7.
DISCONNECT MODULES
Note: The Controller Antilock Brake and Shift Lever Assembly
both use the SCI Transmit circuit at DLC cavity 9 to communicate
with the DRB III
T
. If one of these modules keeps the SCI Transmit
circuit artificially high or low, the DRB III
T
will not be able to com-
municate with any of the modules.
Note: Perform the following steps for each of the modules until
communication is restored with the other module or until each of
the modules has been eliminated as the cause of the fault.
Turn the ignition off.
Disconnect each of the modules noted above, one at a time.
Turn the ignition on.
Using the DRB III
T
, attempt to communicate with the other module still
connected.
Is the DRB III
T
able to communicate with the other module?
Yes
>> Replace the module that was disconnected when communication was restored to the other module.
Perform BODY VERIFICATION TEST.
No
>> Go to 8
8E - 48
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
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