dodge Workshop Repair Guides

Dodge Workshop Service and Repair Manuals

Component Tests and General Diagnostics|Page 1992 > < Component Tests and General Diagnostics|Page 1990
Page 145
background image

Connectors

CIRCUIT OPERATION

When the passing switch is on or the front-ECU is illuminating the headlights (high-beam), the ETACS-ECU illuminates the high-beam indicator light.

TECHNICAL DESCRIPTION (COMMENT)

If the headlights (high-beam and passing) operate normally, the combination meter (high-beam indicator light bulb or printed-circuit board), the front
ECU or the ETACS-ECU is suspected to be defective.

TROUBLESHOOTING HINTS

-

Malfunction of the combination meter (high-beam indicator light bulb or printed-circuit board)

-

Malfunction of the front-ECU

-

Malfunction of the ETACS-ECU

-

Damaged harness wires or connectors

DIAGNOSIS

Required Special Tool:

-

MB991223: Test Harness Set

STEP 1. Check the headlights (high-beam and passing) operation.

Q: Do the headlights (high-beam and passing) illuminate normally?

YES: Go to Step 2.
NO: Solve the problem first. 

STEP 2. Check the high-beam indicator light circuit at the ETACS-ECU connector C-313.

1. Disconnect the ETACS-ECU connector C-313 and measure at the harness side.

Component Tests and General Diagnostics|Page 1992 > < Component Tests and General Diagnostics|Page 1990