1

Install a scan tool.

Does the scan tool power up?

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Go to Step 2

Go to Scan Tool Does Not Power Up in Data Link Communications

1. Turn ON the ignition, with the engine OFF.
2. Attempt to establish communications with the following control modules:

•	Electronic brake control module (EBCM)

•	Instrument cluster (IPC)

Does the scan tool communicate with both control modules?

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Go to Step 3

Go to Scan Tool Does Not Communicate with Class 2 Device in Data Link Communications

Select the DRP/ABS/TCS/TIM/VSES (if equipped) display DTCs function on the scan tool.

Does the scan tool display any ABS DTCs?

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Go to Diagnostic System Check - ABS in Antilock Brake System

Go to Step 4

Select the instrument cluster (IPC) display DTCs function on the scan tool.

Does the scan tool display any IPC DTCs?

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Go to Diagnostic System Check - Instrument Cluster in Instrument Panel, Gauges and Console

Go to Step 5

Does the scan tool display DTC C1245?

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Go to DTC C1245 Low Tire Pressure Detected

System OK