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 MANUALSHONDA2009S2000 BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 3 (IDLE CONTROL SYSTEM)STARTER SWITCH SIGNAL CIRCUIT TROUBLESHOOTING
2009 Honda S2000 Base
Starter Switch Signal Circuit Troubleshooting
2009 Honda S2000 BaseSECTION Starter Switch Signal Circuit Troubleshooting
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2005 Honda S2000, 2004 Honda S2000, 2003 Honda S2000, 2002 Honda S2000, and 2001 Honda S2000. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The clutch pedal must be pressed.
- Measure voltage between ECM connector terminals A24 and B20 with the ignition switch in the ON (II) position and the engine start button pressed.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there battery voltage?
- YES - The starter switch signal is OK.
- NO - Go to step 2.
- Inspect the No. 21 STARTER SIGNAL (7.5 A) fuse in the under-dash fuse/relay box.
Is the fuse OK ?
- YES - Repair open in the wire between the ECM (A24) and the No. 21 STARTER SIGNAL (7.5 A) fuse.
- NO - Repair short in the wire between the ECM (A24) and the No. 21 STARTER SIGNAL (7.5 A) fuse or the PGM-FI main relay. Replace the No. 21 STARTER SIGNAL (7.5 A) fuse.
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.