Test Description
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
The number below refers to the step number on the diagnostic table.
- 3: This step determines if the battery voltage and ground circuits are capable of proper operation during high current demand.
DTC B0856
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Memory Seats Schematics Connector End View Reference: Power Seat Systems Connector End Views |
||||
| 1 | Did you perform the Power Seat Diagnostic System Check? | - | Go to Step 2 | Go to Diagnostic System Check - Power Seat Systems |
| 2 |
|
8.5-16.3 V | Go to Step 3 | Go to Step 4 |
| 3 | Operate the seat adjuster motors and telescoping steering column in both directions. Does the battery 2 voltage remain within the specified values? |
8.5-16.3 V | Go to Diagnostic Aids | Go to Step 4 |
| 4 | Test the battery 2 supply circuit for high resistance. Refer to Circuit Testing
and to Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 7 | Go to Step 5 |
| 5 | Test the memory seat module ground circuit for high resistance. Refer to Circuit Testing
and to Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 7 | Go to Step 6 |
| 6 | Replace the memory seat module. Refer to Memory Seat Control Module Replacement . Is the repair complete? |
- | Go to Step 7 | - |
| 7 |
|
- | Go to Step 2 | System OK |