Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBUICK2007RAINIER AWD L6-4.2LREPAIR AND DIAGNOSISSTARTING AND CHARGINGTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESSCAN TOOL DATA DEFINITIONS
2007 Buick Rainier AWD L6-4.2L
Scan Tool Data Definitions
2007 Buick Rainier AWD L6-4.2LSECTION Scan Tool Data Definitions
Scan Tool Data Definitions
Battery Voltage Signal
- The scan tool displays 0-20 volts. The scan tool displays the voltage as received by the module.
Crank Request Signal
- The scan tool displays Yes/No. The scan tool displays No until the ignition is placed into the START position, then Yes is displayed.
Generator L Terminal Signal Command
- The scan tool displays On/Off. The scan tool displays Off until the engine is running, at which time it will display On.
Generator F Terminal Signal
- The scan tool displays 0-100 percent. The scan tool displays 0-5 percent until the engine is running, then the percentage value varies depending on electrical loads.
Ignition 1 Signal
- The scan tool displays system voltage received by the module.
PNP Switch
- The scan tool displays Park/Neutral or In Gear. The scan tool displays the position of the PNP switch.
Starter Relay Circuit Status
- The scan tool displays Incomplete, Short Gnd/Open, Short to B+ or OK. The scan tool displays the status of the starter relay circuit.
Starter Relay Command
- The scan tool displays Off/On. The scan tool displays Off until engine start has been requested, then it displays On.
TR Sw
- The scan tool displays Park, Reverse, Neutral, Drive 5, Drive 4, Drive 3, Drive and Drive 1. The scan tool displays the position of the transmission range switch.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.