Inspection
IGNITION COIL AND IGNITION POWER TRANSISTORUsing Scan Tool
HARNESS INSPECTION
STEP 1. Check for continuity between the ignition coil and the ignition switch-IG.
- Ignition switch connector: Disconnected
- Ignition coil connector: Disconnected
NOTE
- Touch the ohmmeter problems to both ends of the harness.
OK: GO TO STEP 2NG: Repair the harnesses. (A1 - E2, B1 - E2, C1 - E2)
STEP 2. Check for continuity between the ignition power transistor unit and the ignition coil.
- Ignition coil connector: Disconnected
- Ignition power transistor connector: Disconnected
OK: GO TO STEP 3
NG: Repair the harnesses. (A1 - D6, B1 - D6, C1 - D6)
STEP 3. Measure the power supply voltage of the ignition coil.
- Ignition power transistor: Disconnected
- Ignition switch: ON
Voltage (V): Battery positive voltage
OK: GO TO STEP 4
NG: Repair the harnesses. (DII, D12, D13 - Ignition coil)
STEP 4. Check for an open circuit or a short-circuit to ground between the ignition power transistor and the engine control module.
- Ignition power transistor connector: Disconnected
- Engine control module connector: Disconnected
OK: GO TO STEP 5
NG: Repair the harnesses. (D1 - 11, D2 - 23, D3 - 10, D5 - 51)
STEP 5. Check for continuity in the ground circuit of the ignition power transistor.
- Ignition power transistor connector: Disconnected
OK: GO TO STEP 6
NG: Repair the harnesses. (D4 - Ground)
STEP 6. Measure the ignition power transistor control signal voltage.
- Ignition power transistor connector: Disconnected
- Ignition switch: START
Voltage (V): 0.5 - 4.0
OK: STOP
NG: Repair the harnesses. (D1 - 11, D2 - 23, D3 - 10)