C1344

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CIRCUIT DESCRIPTION
DTC C1344 detects a stuck TCS motor or a seized hydraulic modulator. During initialization or after a TCS cycle, the EBCM/EBTCM commands the TCS motor in the reverse direction and the forward direction to ensure that the motor moves properly. If the TCS motor does not move, the EBCM/EBTCM detects improper current feedback. A Diagnostic Trouble Code (DTC) will then set.

CONDITIONS FOR SETTING THE DTC
DTC C1344 will set during initialization or after a TCS cycle. A malfunction exists if the EBCM/EBTCM detects a condition in which the EBCM/EBTCM cannot move the motor in either direction.

ACTION TAKEN WHEN THE DTC SETS
^ A malfunction DTC stores.
^ The TCS disables.
^ The amber TCS indicator turns on.
^ The red BRAKE warning indicator turns on.

CONDITIONS FOR CLEARING THE DTC
^ The condition responsible for setting the DTC no longer exists and the Scan Tool Clear DTCs function is used.
^ 100 drive cycles pass with no DTC(s) detected.

DIAGNOSTIC AIDS
An intermittent malfunction in DTC C1344 may be caused by one of the following conditions in a mechanical part of the system:
^ Sticking
^ Binding
^ Slipping

Use the enhanced diagnostic function of the Scan Tool in order to measure the frequency of the malfunction. Refer to the Scan Tool manual for the procedure.

Thoroughly inspect any circuitry that may cause the intermittent complaint for the following conditions:
^ Backed out terminals
^ Improper mating
^ Broken locks
^ Improperly formed or damaged terminals
^ Poor terminal-to-wiring connections
^ Physical damage to the wiring harness