Code 41

This is the power source for the ECU and becomes power source for the CPU and actuators.

CODE 41 CIRCUIT DESCRIPTION

Code	Diagnostic Code Detecting Condition	Trouble Area
41	ECU power supply voltage is 9.5 V or lower for a set period of time. ECU power supply voltage is 17 V or higher for a set period of time.	* Battery * Charging circuit * Harness and connector between battery and ECU, ECU and body ground. * ECU

Fig 1: Code 41 Wiring Schematic

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Fig 2: Code 41 Ignition Power Source Circuit Check (1 of 2)

Fig 3: Code 41 Ignition Power Source Circuit Check (2 of 2)