FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Traction Control System (TCL)

TCL TROUBLE CODE DIAGNOSIS
Retrieving TCL Diagnostic Trouble Codes
USING SCAN TOOL MB991502

Required Special Tool:
^ MB991502 Scan Tool (MUT-II)

CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOOK" (OFF) position before connecting or disconnecting the scan tool MB991502.





1. Connect scan tool MB991502 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Use scan tool MB991502 to check for TCL diagnostic trouble codes.
4. Turn the ignition switch to the "LOCK" (OFF) position
5. Disconnect scan tool MB991502.

USING THE ABS WARNING LIGHT AND SPECIAL TOOL
MB991529

NOTE: The TCL system is controlled by the ABS-ECU. TCL diagnostic trouble codes are also indicated by flashing of the ABS warning light.

Required Special Tool:
^ MB991529: Diagnostic Trouble CODE Check Harness





1. Use special tool MB991529 to ground number 1 terminal of the data link connector.

CAUTION: Do not depress the brake pedal after the ignition switch is turned "ON." If the brake pedal is depressed while the ABS is inoperative and the ignition switch is "ON," the ABS warning light will remain on. Because of this, diagnostic trouble codes will not be read out. 2 Turn the ignition switch to the "ON" position.








3. Read out a diagnostic trouble code by observing how the warning light flashes.
4. Disconnect special tool MB991529.