Scan Tool Data Definitions
- Battery Voltage Signal
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The scan tool displays 0-20 Volts. The scan tool displays the voltage as received on the battery positive voltage circuit of the body control module (BCM).
- Crank Request Signal
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The scan tool displays Yes/No. The scan tool displays No until the ignition is placed into the START position then Yes is displayed.
- GEN F-Terminal Signal
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The scan tool displays 0-100%. The scan tool displays the percentage of the field current on the GEN F-Terminal circuit.
- GEN L-Terminal Circuit Status
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The scan tool displays Incomplete, Short Gnd/Open, Short to B+ or OK. The scan tool displays the status of the GEN L-terminal circuit.
- GEN L-Terminal Command
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The scan tool displays 0-100%. The scan tool displays the percentage of the GEN L-terminal signal.
- Idle Boost Level
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The scan tool displays amps. The scan tool displays the current engine idle boost level as commanded by the ECM.
- Ignition 1 Signal
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The scan tool displays 0-20 Volts. The scan tool displays the voltage as received on the ignition 1 circuit to the ECM.
- Ignition Accessory Signal
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The scan tool displays On and Off. The scan tool displays if the ignition 0 signal is On or Off.
- Run/Crank Relay
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The scan tool displays On or Off. The scan tool display actual state of the Run/Crank relay.
- Run/Crank Relay Command
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The scan tool displays On or Off. The scan tool displays the commanded state of the Run/Crank relay.
- Starter Relay Command
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The scan tool displays ON/OFF. The scan tool displays Off until engine start has been requested, then it reads On.
- TR Sw.
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The scan tool displays Park, Reverse, Neutral, Drive 5, Drive 4, Drive 3, Drive 2, Drive 1. The scan tool displays the position of the transmission range switch.