Tundra 2WD V6-4.0L (1GR-FE) (2005)
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Starter Motor: Testing and Inspection
Cranking Hold Function Circuit
CRANKING HOLDING FUNCTION CONTROL CIRCUIT
CIRCUIT DESCRIPTION
The system detects the ignition switch's starting signal (STSW signal) and then supplies current to the starter until the ECM judges that the engine has
started successfully. The purpose is to reduce the holding time of the ignition key.