Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
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Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.
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The symptom list in Symptoms will determine the correct diagnostic procedure to use.
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The presence of DTCs U1161, U1162, U1163 or U1170 indicate one or more of the door modules is not communicating on the power door serial data circuits.
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The presence of other DTCs which begin with "U" indicate some other system control module is not communicating. The specified procedure will compile all the available information before tests are performed.
Step | Action | Yes | No | ||||
|---|---|---|---|---|---|---|---|
1 | Install a scan tool. Does the scan tool power up? | Go to Step 2 | in Data Link Communications | ||||
Does the scan tool communicate with the listed modules? | Go to Step 3 | Go to in Data Link Communications | |||||
Select the Driver Door Module display DTCs function on the scan tool. Does the scan tool display any DTCs? | Go to Step 4 | Go to | |||||
Does the scan tool display DTCs U1161, U1162, U1163 or U1164? | Go t | Go to Step 5 | |||||
Does the scan tool display any other DTCs which begin with a "U"? | Gin Data Link Communications | Go to Step 6 | |||||
6 | Does the scan tool display DTC B1000, B1004, B1007, or B1009? | Go toin Body Control System | Go to Step 7 | ||||
7 | Does the scan tool display DTC B1327 or B1328? | Go toin Engine Electrical | Go to Step 8 | ||||
8 | Does the scan tool display B0490? | Go to in HVAC-Automatic | Go to Step 9 | ||||
9 | Does the scan tool display B2757, B2762 or B2772? | in Seats | Go to Step 10 | ||||
10 | Does the scan too display any DTCs that begin with "P"? |
