Chrysler Crossfire. Manual — part 729
(P0600) SLA CAN MESSAGE INCORRECT
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NAG1 - ELECTRICAL DIAGNOSTICS
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(P0600) SLA CAN MESSAGE INCORRECT (CONTINUED)
When Monitored and Set Condition
•
When Monitored: SLA CAN-ID received at least once and CAN BUS Circuit DTC is not active.
•
Set Condition: CAN message received from the Shift Lever Assembly is incorrect.
POSSIBLE CAUSES
CAN BUS CIRCUIT DTC PRESENT
SHIFT LEVER ASSEMBLY DTCS PRESENT
CAN BUS CIRCUIT OPEN
SHIFT LEVER ASSEMBLY
For a complete Transmission Control Module Circuit Diagram, (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTO-
MATIC - NAG1 - SCHEMATICS AND DIAGRAMS).
For a complete CAN BUS Circuit Diagram, (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES -
SCHEMATICS AND DIAGRAMS).
Diagnostic Test
1.
PRE-DIAGNOSTIC CHECK OUT
Note: Low fluid level can be the cause of many transmission
problems. If the fluid level is low, locate and repair the leak, then
check and adjust the fluid level in accordance with the Service
Information.
Note: Always perform diagnostics with a fully charged battery to
avoid false symptoms.
With the DRB III
T
, read Engine DTCs. Check and repair all engine
DTCs prior to performing transmission symptom diagnostics.
With the DRB III
T
, read and record all Transmission DTCs.
Note: Check connectors – Clean/Repair as necessary. Poor pin to
terminal connections can set DTCs.
Using the wiring diagram/schematic as a guide, inspect the wiring and
connectors.
Repair as necessary.
Most DTCs set on startup but some must be set by driving the vehicle such that all diagnostic monitors have run.
Note: Check for any Technical Service Bulletins that may apply.
Perform this procedure prior to Symptom diagnosis.
Continue
Go To 2
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NAG1 - ELECTRICAL DIAGNOSTICS
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(P0600) SLA CAN MESSAGE INCORRECT (CONTINUED)
2.
CHECK TO SEE IF (P0720) CAN BUS CIRCUIT DTC PRESENT
Turn the ignition on.
With the DRB III
T
, read Transmission DTCs.
Note: If DTC (P0720) CAN BUS CIRCUIT is present, perform diag-
nostics on that symptom first.
Is DTC (P0720) CAN BUS CIRCUIT present?
Yes
>> Refer to the Transmission - Electrical Diagnostics category
and perform the appropriate symptom.
No
>> Go To 3
3.
CHECK TO SEE IF SHIFT LEVER DTC PRESENT
With the ignition on.
With the DRB III
T
, read Shift Lever Assembly DTCs.
Are any Shift Lever Assembly DTCs present?
Yes
>> Refer to the Shift Lever Assembly category and perform
the appropriate symptom.
No
>> Go To 4
4.
CAN C BUS (+) OR (-) CIRCUIT(S) OPEN
Turn the ignition off.
Disconnect the Shift Lever Assembly harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance from the CAN C BUS (+) circuit to the CAN C
BUS (-) circuit at the Shift Lever Assembly harness connector.
Is the resistance 60 ohms ± 3.0 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 faulty CAN C BUS circuit for an open.
Perform NAG1 TRANSMISSION VERIFICATION TEST.
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NAG1 - ELECTRICAL DIAGNOSTICS
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(P0700) SENSOR SUPPLY VOLTAGE
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NAG1 - ELECTRICAL DIAGNOSTICS
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