Ce-niehoff-co N1387-1/EPM Troubleshooting Guides Uživatelský manuál stáhnout pdf (Strana 11)

Page 11

TG0019A

Section 6: Troubleshooting the EPM

CAUTION

Troubleshooting sequences must be performed during 3-minute delay after battery-connect button on

vehicle is pressed. If main LED on EPM is not flashing GREEN, press switch to reactivate system. LED on

EPM must be flashing GREEN while performing tests.

Chart 5 – Engine Will Not Crank at Start-Up

Yes

Check and repair

vehicle battery-

connect button and

wiring as necessary.

Re-test.

Disconnect 4-socket harness at EPM. While

pressing vehicle battery-connect button, check

for continuity between socket C on EPM harness

plug and ground. Does continuity exist?

Ye s

Turn START-RUN switch to OFF. Press vehicle battery-connect button. Check LED on EPM.

Is LED flashing GREEN?

Before Troubleshooting, Check Batteries for Proper Charge Voltage. See Page 1.

Ye s

EPM is

defective.

Check for continuity across 28 V and 14 V

terminals on EPM. Does continuity exist?

Check and repair

starter and starter

wiring as necessary.

Re-test.

EPM is

defective.

Chart 6 – No Power to Aux. Loads –One or More LEDs are OFF

Ye s

Disconnect Aux. Load harness from EPM. Turn start-run switch to OFF.

Press vehicle battery-connect button. Is LED on EPM flashing GREEN?

Before Troubleshooting, Check Batteries for Proper Charge Voltage. See Page 1.

Ye s

EPM is

defective.

Are all five Aux diagnostic LEDs lit on EPM?

Check and repair

load and load wiring

as necessary.

Re-test.

EPM is

defective.

(CONT’D)

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