DTC B1577 IMM Control Module EEPROM
DTC DETECTING CONDITION:
- Body integrated unit malfunctioning
- Failed to access ROM inside the body integrated unit.
CAUTION:
When the body integrated unit is replaced, registration of the immobilizer system is required. For details, refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 PERFORM ECM REGISTRATION. Perform ECM registration. Refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume. |
Is registration complete? | Finish the diagnosis. | Go to step 2 . |
| 2 PERFORM ECM REGISTRATION. Perform the Clear Memory Mode. (ECM and body integrated unit) <Ref. to CLEAR MEMORY MODE .> Perform ECM registration. Refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume. |
Is registration complete? | Even if DTC is detected, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.
NOTE:
In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
|
Refer to "Correspondence table when registration is not possible" in the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume. If the registration still does not work properly, replace the body integrated unit. <Ref. to Body Integrated Unit .> |