Measure the resistance between ECM connector and chassis ground.
Connector & terminal
(B135) No. 90 — Chassis ground:
(B135) No. 60 — Chassis ground:
Is the resistance 1 MΩ or more?
In this case, repair or replace the following item:
• Short circuit to ground in harness between ECM connector and glow relay connector
• Blown out of fuse (relay block)