FixVault
Home › Acura › 1999 › SLX › Repair and Diagnosis › Engine Performance › System › Engine Controls - Basic Diagnostic Procedures › Ignition Checks › Electronic Ignition System › Ignition Coil Test (Odyssey & SLX)

Ignition Coil Test (Odyssey & SLX)

NOTE: Ensure ignition, fuel and emission systems are working properly before performing ignition coil test.
  1. Remove ignition coil cover. Disconnect connector of suspect coil. Turn ignition on. Measure voltage between ground and ignition coil harness connector terminal No. 3 (Black/Yellow wire). See Fig 1. If battery voltage exists, go to next step. If battery voltage does not exist, check for open in Black/Yellow wire between suspect ignition coil and fuse No. 11 (15-amp) located at left side under-dash fuse/relay box.
  2. Turn ignition off. Check for continuity between ground and suspect ignition coil harness connector terminal No. 2 (Black wire). If continuity exists, go to next step. If continuity does not exist, check for open in Black wire between suspect ignition coil and ground connector G101. Ground connector G101 is located at left side of engine, on thermostat housing, under radiator fan switch.
  3. Disconnect PCM 31-pin connector "C". Check for continuity between body ground and PCM 31-pin harness connector "C" terminals No. 3 (Blue wire), No. 4 (Yellow/Green wire), No. 12 (Black/Red wire), No. 13 (Yellow wire), No. 14 (Red wire) and/or No. 23 (White/Blue wire), individually. If continuity does not exist, go to next step. If continuity exists, check for short in wire between suspect ignition coil terminal No. 1 and PCM 31-pin connector "C".
  4. Reconnect PCM 31-pin connector "C". Turn ignition switch to START position. Measure voltage between ground and suspect ignition coil harness connector terminal No. 1. If about .5 volts exists, replace ignition coil. If about .5 volts does not exist, check for open in wire between suspect ignition coil terminal No. 1 and PCM 31-pin connector "C".
Fig 1: Identifying Ignition Coil Terminals (Odyssey & SLX)
G99D08998Courtesy of AMERICAN HONDA MOTOR CO., INC.
IGNITION COIL RESISTANCE - Ohms @ 68°F (20°C)

Application Primary Secondary
Accord
F23A1 & F23A4 0.45-0.55 16,800-25,200
F23A5 0.63-0.77 12,800-19,200
J30A1 0.34-0.42 17,100-20,900
Civic
Hitachi 0.45-0.55 22,400-33,600
Tec 0.63-0.77 12,800-19,200
CR-V 0.63-0.77 12,800-19,200
Odyssey & SLX 0.34-0.42 17,100-20,900
Prelude 0.64-0.78 14,400-21,600
About FixVault