Name: AllOEMManuals
Address: 316 Brandywine Ave, Streetman, TX, 75859, US
Telephone: +14699867883
Price range: $$

Turn ignition off. Remove distributor cap, rotor and leak cover. Disconnect wires from ICM. See Fig 1 . Turn ignition on. Check for voltage between ground and Black/Yellow wire. If battery voltage exists, go to next step. If battery voltage does not exist, check Black/Yellow wire between fuse No. 9 (15-amp) in underdash fuse/relay box and ICM. See the WIRING DIAGRAMS article. Repair wire as necessary.
Turn ignition on. Check for voltage between ground and White/Blue wire. If battery voltage exists, go to next step. If battery voltage does not exist, check ignition coil. Replace coil as necessary. If ignition coil is okay, check for an open in White/Blue wire between ICM and ignition coil. See the WIRING DIAGRAMS article.
Check for continuity in Blue wire between tachometer test connector and ICM. If continuity exists, go to next step. If continuity does not exist, repair open in Blue wire.
Check for continuity between ground and Blue wire. If continuity exists, repair short to ground in Blue wire. If continuity does not exist, wiring is okay. Replace ICM.

Fig 1: Exploded View Of Distributor
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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.

Safety Warning

Ignition Control Module (ICM) Input Test