Measure the resistance of harness between ECM and fuel injector connector.
Connector & terminal
Euro 4 model
#1 (B134) No. 16 — Chassis ground: #2 (B134) No. 17 — Chassis ground: #3 (B134) No. 26 — Chassis ground: #4 (B134) No. 27 — Chassis ground:
Euro 5 model
#1 (B134) No. 15 — Chassis ground: #2 (B134) No. 16 — Chassis ground: #3 (B134) No. 25 — Chassis ground: #4 (B134) No. 26 — Chassis ground:
Is the resistance 1 MΩ or more?
Repair the short circuit to ground in harness between ECM and fuel injector connector.