Control module power supply
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Control module power supply
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The main relay, fuel pump relay and fuse 17 are supplied with +30 from maxi fuse 2. Control module pin 23 is supplied from fuse 17.
The control module uses +30 for its memory.
Control module pin 43 is supplied with +15 from fuse 27. When +15 is applied to pin 43, the control module will be activated.
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If +30 or +15 is missing, the engine will not start and the system cannot be contacted using the diagnostic tool.
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When the ignition is in position ON, the main relay will operate.
Control module pin 1 is supplied from main relay pin 87 via fuse 14. This connection is used internally to feed the throttle motor.
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If the supply from the main relay to the control module is missing, diagnostic trouble code P1640 will be generated, the throttle will close and the engine will stop.
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