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Dodge Workshop Service and Repair Manuals

Component Tests and General Diagnostics|Page 2092 > < Component Tests and General Diagnostics|Page 2090
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Connectors

CIRCUIT OPERATION

The ETACS-ECU operates various functions according to the input signal from the speed sensor.

TECHNICAL DESCRIPTION (COMMENT)

The speed sensor input signal is used to operate the following device or system:

-

Door ajar tone alarm function

-

Rolling lock function

-

Windshield intermittent wiper

If the signal fails these device or system will not work normally.

TROUBLESHOOTING HINTS

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Malfunction of the speed sensor

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Malfunction of the ETACS-ECU

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Damaged harness wires or connectors

DIAGNOSIS

Required Special Tools:

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MB991223: Test Harness Set

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MB991502: Scan Tool (MUT-II)

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MB991529: Diagnostic Trouble Code Check Harness

STEP 1. Check the speedometer operation.

Q: Does the speedometer work normally? 

Component Tests and General Diagnostics|Page 2092 > < Component Tests and General Diagnostics|Page 2090