DTC 43

Code 43:

Code 43:

CIRCUIT DESCRIPTION:

The ECM receives a 12 volt signal when the starter is in the cranking position. This signal is used by the ECM to know when to turn the fuel pump "ON." If the signal is not present, and engine speed is greater than 800 rpm, Code 43 will then set.

TEST DESCRIPTION: Numbers below refer to circled numbers on the diagnostic chart.

1. Battery voltage should be present on the BLACK wire while the engine is cranking.

2. When the ignition switch is released (engine running) no voltage should be present on BLACK wire.