Eaton Fuller Hybrid Transmission Power-Up Sequence Test2019-05-30T00:08:07+00:00

Eaton Fuller Hybrid Transmission Power-Up Sequence Test

This test must be performed only when experiencing a
vehicle won’t crank” with a double dash “- -”, double star “**”, or blank gear display. The Electrical Pretest must be performed prior to this procedure.

Power-Up Sequence Test Detection

The power-up self-check is performed automatically at each key on. Turn key on and watch the “Service” light. If power up stops with the “Service” light constantly on, or it never comes on, self-check has failed.

Power-Up Sequence Test Detection Fallback:

There is no fallback for this test and the vehicle will not crank if the Transmission Electronic Control Unit (TECU) or power supply harness has failed

Possible Causes

This may be caused by any of the following:

  • TECU Power Supply
  • TECU

Eaton Fuller Hybrid Transmission Power-Up Sequence Test

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