1) Start the engine.
2) Measure the voltage between ECM connector and chassis ground.
Connector & terminal
Gasoline engine model
(B135) No. 25 (+) — Chassis ground (−):
Diesel engine model
(B135) No. 11 (+) — Chassis ground (−):
Is the voltage 0 ←→ 14 V or more?
Inspect the ECM.
• Gasoline engine model:
• Diesel engine model: