Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 355

4.

(D54) CAN B BUS (–) CIRCUIT OPEN

Measure the voltage of the (D54) CAN B Bus (-) circuit.

Is any voltage present on this circuit?

Yes

>> Replace the Front Control Module in accordance with the

service information.

Perform BODY VERIFICATION TEST – VER 1. (Refer to
BODY VERIFICATION TEST – VER 1).

No

>> Repair the (D54) CAN B Bus (–) circuit for an open.

Perform BODY VERIFICATION TEST – VER 1. (Refer to
BODY VERIFICATION TEST – VER 1).

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U1106-CAN C SIGNAL MISSING

For a complete wiring diagram Refer to Section 8W.

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•

When Monitored:
With the ignition on.

•

Set Condition:
The FCM detects a short in either CAN C Bus circuit.

Possible Causes

(D65) CAN C BUS (+) CIRCUIT SHORTED TO GROUND

(D64) CAN C BUS (-) CIRCUIT SHORTED TO GROUND

(D65) CAN C BUS (+) CIRCUIT SHORTED TO VOLTAGE

(D64) CAN C BUS (-) CIRCUIT SHORTED TO VOLTAGE

(D65) CAN C BUS (+) CIRCUIT SHORTED TO (D64) CAN C BUS (-) CIRCUIT

ANTILOCK BRAKE MODULE

POWERTRAIN CONTROL MODULE

SHIFTER LEVER ASSEMBLY (NAG1 ONLY)

ELECTRONIC SHIFT MODULE (COLUMN NAG1)

TRANSMISSION CONTROL MODULE (NAG1 ONLY)

ENGINE CONTROL MODULE (DIESEL)

STEERING CONTROL MODULE

FRONT CONTROL MODULE

Diagnostic Test

1.

TEST FOR INTERMITTENT CONDITION

Turn the ignition on.

With the scan tool, record and erase FCM DTC’s.

Cycle the ignition from on to off 3 times.

Turn the ignition on.

With the scan tool, read active FCM DTC’s.

Does the scan tool display U1106–CAN C SIGNAL MISSING 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.

ANTILOCK BRAKE MODULE — INTERNAL SHORT

Turn the ignition off.

Disconnect the Antilock Brake Module harness connector.

Turn the ignition on.

With the scan tool, record and erase FCM DTC’s.

Cycle the ignition from on to off 3 times.

Turn the ignition on.

With the scan tool, read active FCM DTC’s.

Does the scan tool display U1106–CAN C SIGNAL MISSING as active?

Yes

>> Go To 3

No

>> Inspect the wiring and connectors for damage or shorted circuits. If ok, replace the Antilock Brake Mod-

ule in accordance with the service information.

Perform ABS VERIFICATION TEST — VER 1.

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3.

POWERTRAIN CONTROL MODULE — INTERNAL SHORT

Turn the ignition off.

Disconnect the Powertrain Control Module C1 harness connector.

Turn the ignition on.

With the scan tool, record and erase FCM DTC’s.

Cycle the ignition from on to off 3 times.

Turn the ignition on.

With the scan tool, read active FCM DTC’s.

Does the scan tool display U1106–CAN C SIGNAL MISSING as active?

Yes

>> Go To 4

No

>> Inspect the wiring and connectors for damage or shorted circuits. If ok, replace and program the Pow-

ertrain Control Module in accordance with the service information.

Perform (NGC) POWERTRAIN VERIFICATION TEST VER - 5.

4.

SHIFTER LEVER ASSEMBLY (NAG1 ONLY) OR ELECTRONIC SHIFT MODULE (COLUMN NAG1)—
INTERNAL SHORT

Turn the ignition off.

NOTE: If the vehicle is not equipped with a NAG1 controller then skip this step.
Disconnect the Shifter Lever Assembly or Electronic Shift Module harness connector.

Turn the ignition on.

With the scan tool, record and erase FCM DTC’s.

Cycle the ignition from on to off 3 times.

Turn the ignition on.

With the scan tool, read active FCM DTC’s.

Does the scan tool display U1106–CAN C SIGNAL MISSING as active?

Yes

>> Go To 5

No

>> Inspect the wiring and connectors for damage or shorted circuits. If ok, replace and program the Shifter

Lever Assembly in accordance with the service information.

Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.

5.

TRANSMISSION CONTROL MODULE (NAG1 ONLY)— INTERNAL SHORT

Turn the ignition off.

NOTE: If the vehicle is not equipped with a NAG1 controller then skip this step.
Disconnect the Transmission Control Module C2 harness connector.

Turn the ignition on.

With the scan tool, record and erase FCM DTC’s.

Cycle the ignition from on to off 3 times.

Turn the ignition on.

With the scan tool, read active FCM DTC’s.

Does the scan tool display U1106–CAN C SIGNAL MISSING as active?

Yes

>> Go To 7

No

>> Inspect the wiring and connectors for damage or shorted circuits. If ok, replace and program the Trans-

mission Control Module in accordance with the service information.

Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1.

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