BCM DTC B334: Loss Of ECM Data: Intermittent
If only DTC B334 is stored as "History", check the power and grounds for intermittent faults and 800E for an intermittent open circuit. If ECM DTC EO52 history is also set, refer to SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
NOTE:
The following numbered steps refer to circled numbers on diagnostic chart. See Fig 1
. For circuit identification, see Figure
.
- This step checks for intermittent operating.
- This step checks to see if the open is in CKT 800F or 800D.
- If there is an open in CKT 800F or 800D, this step finds which side of the ALDL it is on.
- This step checks for an open in CKT 800E.