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LeSabre Custom
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ECM/Pcm Code Charts
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DTC P1860: TCC PWM Solenoid
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Test Description
Test Description
NOTE:
Test numbers refer to numbers on diagnostic chart.
Ensures PCM is capable of controlling solenoid.
Checks TCC PWM driver circuit for short to ground.
Fig 1: Code 1860 Schematic (3.8L) TCC PWM Solenoid
Fig 2: Code 1860 Diagnostic Flow Chart (3.8L) TCC PWM Solenoid