ECUFLASH.PRO FIRMWARE, DAMOS & WIKI
EN • USD / USDT
ECU INFORMATION ENCYCLOPEDIA (WIKI LAYER 1) • HOWTO & TECHARTICLE

MT22.3 ECU Bench Pinout (Bench / Boot / GPT Mode) — Connection Diagram

Step-by-step bench connection diagram for the MT22.3 ECU (Platform Bench, no case opening, and Boot Mode): T30/T15 power pinout, CAN-H/CAN-L twisted pair and GPT0/GPT1 signals.

OEM PINOUT DIAGRAM: DELPHI MT22.3.png (Platform / Bench)607,236 bytes
DELPHI MT22.3.png
STEP-BY-STEP BENCH CONNECTION PROTOCOL (HOWTO)BENCH / BOOT
  1. Step 1 (Terminal 30 & Terminal 15 power): Apply stabilized 13.5V — 13.8V to the permanent power (T30) and ignition (T15) pins, plus ground (GND), following the cable color coding above.
  2. Step 2 (CAN bus & GPT0 / GPT1 generator lines): Connect the CAN-H and CAN-L, plus the signal wires GPT0 (S1) and GPT1 (S2) to enter service mode without opening the ECU case.
  3. Step 3 (Full PFLASH + DFLASH backup read): Before any write operation, read and save a full backup of the internal flash (PFLASH) and the EEPROM area (DFLASH).
VEHICLES FITTED WITH THE MT22.3 ECU (2)FITMENT
BrandModel & EngineECU & MCUOpen
GAC Changfeng (All engine variants with this ECU) ChinaDelphi MT22.3 (SPC5634) Open vehicle →
Universal ECU Protocol Universal Bosch MPC5xx / Delphi MTxx / Continental Easy-U Protocol (Direct bench connector access (Bench / Boot)) ChinaDelphi MT22.3 (SPC5634) Open vehicle →