Diagnostic Aids
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.
- If there is an open or a short on the PASS-Key® signal or ground circuit, the BCM will be unable to accept a valid PASS-Key® code when the program mode is activated. The vehicle will also exhibit a no crank condition.
- Diagnose all other theft deterrent DTCs before attempting to diagnose DTC B2735, as this will affect the BCM's ability to properly read a PASS-Key® resistance value.
- Clean the key resistor contacts of any foreign material. The foreign material could interfere with the key detection circuit, causing the BCM to be unable to program the PASS-Key® system and to set a DTC B2735.
DTC B2735
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Theft Deterrent System Schematics Connector End View Reference: Theft Deterrent System Connector End Views |
|||
| 1 | Did you perform the Theft Deterrent Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Theft Deterrent |
| 2 |
|
Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems |
| 3 |
|
Go to Step 7 | Go to Step 4 |
| 4 | Test the key resistor input circuit for a high resistance or an open. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 7 | Go to Step 5 |
| 5 | Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 7 | Go to Step 6 |
| 6 |
IMPORTANT:
When replacing the BCM, perform the relearn procedure. Refer to Body Control Module (BCM) Programming/RPO Configuration
in Body Control System. Replace the BCM. Refer to Body Control Module Replacement
in Body Control System.Did you complete the repair? |
Go to Step 7 | - |
| 7 |
|
Go to Step 2 | System OK |