Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 619
3.
(D54) CAN B BUS (-) CIRCUIT OPEN
Turn the ignition off.
Disconnect the Memory Seat Module C1 harness connector.
Measure the voltage between the (D54) CAN B Bus (-) circuit and
ground.
Is there any voltage present?
Yes
>> Inspect the wiring and connectors for damage or shorted
circuits. If ok, replace the Memory Seat Module in accor-
dance with the service information.
Perform POWER SEAT SYSTEM VERIFICATION TEST -
VER 1.
No
>> Repair the (D54) CAN B Bus (-) circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
8N - 174
POWER SEATS - ELECTRICAL DIAGNOSTICS
LX
U0021-CAN B BUS (+) CIRCUIT OPEN
For a complete wiring diagram Refer to Section 8W.
LX
POWER SEATS - ELECTRICAL DIAGNOSTICS
8N - 175
•
When Monitored:
Continuously.
•
Set Condition:
The Memory Seat Module detects the (D55) CAN B Bus (+) circuit is open.
Possible Causes
(D55) CAN B BUS (+) CIRCUIT OPEN
MEMORY SEAT MODULE
Diagnostic Test
1.
TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
With the scan tool, record and erase MSM DTC’s
Cycle the ignition from on to off three times.
Turn the ignition on.
With the scan tool, read active MSM DTC’s.
Does the scan tool display this DTC as active?
Yes
>> Go To 2
No
>> The conditions that caused this code to set are not present at this time. Using the wiring diagram/sche-
matic as a guide, inspect the wiring and connectors.
2.
(D55) CAN B BUS (+) CIRCUIT OPEN
Turn the ignition off.
Disconnect the Memory Seat Module C1 harness connector.
Measure the voltage between the (D55) CAN B Bus (+) circuit and
ground.
Is there any voltage present?
Yes
>> Inspect the wiring and connectors for damage or shorted
circuits. If ok, replace the Memory Seat Module in accor-
dance with the service information.
Perform POWER SEAT SYSTEM VERIFICATION TEST -
VER 1.
No
>> Repair the (D55) CAN B Bus (+) circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
U0022-CAN B BUS (+) CIRCUIT LOW
For a complete wiring diagram Refer to Section 8W.
8N - 176
POWER SEATS - ELECTRICAL DIAGNOSTICS
LX
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the diagnostic
test procedure.
U0023-CAN B BUS (+) CIRCUIT HIGH
For a complete wiring diagram Refer to Section 8W.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the diagnostic
test procedure.
LX
POWER SEATS - ELECTRICAL DIAGNOSTICS
8N - 177
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