Ignition Control Module Input Test
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1998 Acura Integra, 1998 Acura 3.5RL, 1998 Acura 3.2TL, 1998 Acura 3.0CL, and 1998 Acura 2.5TL. However, it is still accessible from the selected car via links, so may be relevant.
- Turn ignition off. Disconnect Ignition Control Module (ICM) 8-pin harness connector. Check for continuity between ground and ICM harness connector terminals No. 2 (Black wire) and No. 7 (Black wire). See Fig 1. If continuity exists, go to next step. If continuity does not exist, repair open in Black wire between ICM and ground.
- Turn ignition on. Measure voltage between ground and ICM harness connector terminals No. 1 (White/Black wire), No. 3 (White/Green wire), No. 4 (White wire), No. 5 (White/Red wire), No. 6 (White/Yellow wire on 3.2TL; Red/Green wire on 3.5RL), and No. 8 (White/Blue wire).
- If battery voltage exists at all indicated terminals, replace ICM. On 3.2TL, if battery voltage does not exist at all terminals, check for a blown 30-amp fuse located in ignition coil fuse holder. On 3.5TL, if battery voltage does not exist at all terminals, check for a blown IG-COIL fuse No. 25 (30-amp) located in underdash panel fuse panel.
- On all models, if battery voltage does not exist at a specific terminal, check for open or shorted circuit between ignition coil and ICM harness connector. If circuit is okay, substitute suspect ignition coil with known-good coil.