U0010-CAN INTERIOR BUS

For a complete wiring diagram, refer to the Wiring Information.

When Monitored:
With the ignition on.
Set Condition:
The Totally Integrated Power Module (TIPM) detects a short to ground on the CAN Interior Bus (125K) (+) circuit or a short to voltage on the CAN Interior Bus (125K) (-) circuit.

Possible Causes
(D265) CAN INTERIOR BUS (125K) (+) CIRCUIT SHORTED TO GROUND
(D264) CAN INTERIOR BUS (125K) (-) CIRCUIT SHORTED TO VOLTAGE
ANY CAN INTERIOR BUS MODULE
TOTALLY INTEGRATED POWER MODULE (TIPM)

1. TEST FOR INTERMITTENT CONDITION

1.	Turn the ignition on.

2.	With the scan tool, record and erase TIPM DTCs.

3.	Cycle the ignition from on to off three times.

4.	Turn the ignition on.

5.	With the scan tool, read active TIPM DTCs.

Does the scan tool display this DTC as active?

Yes

Go To 2

Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.

2. ANY CAN INTERIOR BUS (125K) MODULE - INTERNAL SHORT

NOTE: When performing this step, turn the ignition off (wait one minute) before disconnecting any module. When the module is disconnected turn the ignition on.

NOTE: This step is to determine if the fault is internal within a module.

1.	While monitoring the scan tool, disconnect each CAN Interior Bus (125K) module (except for the TIPM), one at a time.

2.	Check for this DTC to become active after disconnecting each CAN Interior Bus (125K) module the vehicle is equipped with.

NOTE: If the DTC becomes stored when a particular module is disconnected, that module is causing the DTC to set.

With all the CAN Interior Bus modules disconnected, does the scan tool display this DTC as active?

Yes

Go To 3

Replace the module that when disconnected caused this DTC to become stored in accordance with the Service Information.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

3. CHECK THE (D265) CAN INTERIOR BUS (125K) (+) CIRCUIT FOR A SHORT TO GROUND

1.	Turn the ignition off.

2.	Measure the resistance between ground and the (D265) CAN Interior Bus (125K) (+) circuit at the TIPM C7 harness connector.

Is any resistance present?

Yes

Repair the short to ground in the (D265) CAN Interior Bus (125K) (+) circuit.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

Go To 4

4. CHECK THE (D264) CAN INTERIOR BUS (125K) (-) CIRCUIT FOR A SHORT TO VOLTAGE

1.	Turn the ignition on.

2.	Measure the voltage at the (D264) CAN Interior Bus (125K) (-) circuit at the TIPM C7 harness connector.

Is the voltage above 6 volts?

Yes

Repair the short to voltage in the (D264) CAN Interior Bus (125K) (-) circuit.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

Inspect the wiring and connectors for damage or short circuits. If OK, replace the TIPM in accordance with the Service Information.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

U0010-CAN INTERIOR BUS

Possible Causes