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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2001MONTE CARLO V6-3.4L VIN EREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESSCAN TOOL DATA, NORMAL VALUES AND DEFINITIONSSCAN TOOL DATA DEFINITIONS - POWERTRAIN SYSTEMSIGNITION MODE
2001 Chevrolet Monte Carlo V6-3.4L VIN E
Ignition Mode
2001 Chevrolet Monte Carlo V6-3.4L VIN ESECTION Ignition Mode
The scan tool displays Bypass/IC. The bypass indicates the Ignition Control (IC) module is keeping the spark advance at a fixed 10 degrees BTDC, bypass mode. The ignition control module determines the correct operating mode based on the level of the voltage that the PCM sends to the ignition control module on the bypass circuit. If the PCM does not turn ON the 5 volts, or if the ignition control module does not receive the voltage, the module will control spark timing. The ignition control (IC) indicates that the PCM has signaled the ignition module that the PCM is going to control the spark advance, IC mode. The ignition control module determines the correct operating mode based on the level of voltage that the PCM sends to the ignition control module on the bypass circuit. The PCM provides 5 volts to the ignition control module bypass circuit if the PCM is going to control spark timing, IC mode. If the PCM does not turn ON the 5 volts, or if the ignition control module does not receive the voltage, the module will control spark timing, bypass mode.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.