The code is generally defined as an "ECU Fault" or "Electronic Control Unit Hardware". It indicates that the internal self-test of a control module—often the SRS (airbag) module or the Body Control Module (BCM)—has failed.
| Measurement | Diagnosis | Solution | | :--- | :--- | :--- | | | Dead pretensioner (squib) | Replace driver seatbelt buckle assembly (must match Isuzu part number). | | Stable 1.8-2.5Ω | Good pretensioner; problem is the body harness or SRS module. | Move to Step 4. | | Fluctuating | Intermittent short/break in seatbelt wire | Replace the seatbelt assembly (internal wiring fault). | isuzu isuzu -thailand- error b101d30
: The most direct cause is a physical failure of the module's RAM, ROM, or internal processor. The code is generally defined as an "ECU
Module Inspection: Locate the SRS unit (usually under the center console). Check for signs of moisture or loose plugs. Safety Warning | | Stable 1
The Airbag (SRS) light or Traction Control/ABS lights may illuminate on the dashboard.