Diagnosis Procedure
- CHECK ECM POWER SUPPLY
- Turn ignition switch OFF, wait at least 10 seconds and then turn it ON.
- Check the voltage between ECM harness connector terminals.
ECM Voltage Connector + - Terminal Terminal E16 121 128 Battery voltage Is the inspection result normal?
YES: GO TO 2.
NO: Refer to "DIAGNOSIS PROCEDURE ".
- CHECK CONDENSER POWER SUPPLY
- Turn ignition switch OFF.
- Disconnect condenser harness connector.
- Turn ignition switch ON.
- Check the voltage between condenser harness connector and ground.
Condenser Ground Voltage Connector Terminal F13 1 Ground Battery voltage Is the inspection result normal?
YES: GO TO 4.
NO: GO TO 3.
- CHECK CONDENSER POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect IPDM E/R harness connector.
- Check the continuity between IPDM E/R harness connector and condenser harness connector.
IPDM E/R Condenser Continuity Connector Terminal Connector Terminal F12 49 F13 1 Existed - Also check harness for short to ground and short to power.
Is the inspection result normal?
YES: Refer to "DIAGNOSIS PROCEDURE ".
NO: Repair open circuit, short to ground or short to power in harness or connectors.
- CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Check the continuity between condenser harness connector and ground.
Condenser Ground Continuity Connector Terminal F13 2 Ground Existed - Also check harness for short to power.
Is the inspection result normal?
YES: GO TO 5.
NO: Repair open circuit or short to power in harness or connectors.
- CHECK CONDENSER
Check condenser. Refer to "COMPONENT INSPECTION (CONDENSER) "
Is the inspection result normal?
YES: GO TO 6.
NO: Replace condenser.
- CHECK IGNITION COIL POWER SUPPLY
- Reconnect all harness connectors disconnected.
- Disconnect ignition coil harness connector.
- Turn ignition switch ON.
- Check the voltage between ignition coil harness connector and ground.
Ignition coil Ground Voltage Cylinder Connector Terminal 1 F31 3 Ground Battery voltage 2 F32 3 3 F33 3 4 F34 3 5 F35 3 6 F36 3 Is the inspection result normal?
YES: GO TO 7.
NO: Repair or replace harness or connectors.
- CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Check the continuity between ignition coil harness connector and ground.
Ignition coil Ground Continuity Cylinder Connector Terminal 1 F31 2 Ground Existed 2 F32 2 3 F33 2 4 F34 2 5 F35 2 6 F36 2 - Also check harness for short to power.
Is the inspection result normal?
YES: GO TO 8.
NO: Repair open circuit or short to power in harness or connectors.
- CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
- Disconnect ECM harness connector.
- Check the continuity between ignition coil harness connector and ECM harness connector.
Ignition coil ECM Continuity Cylinder Connector Terminal Connector Terminal 1 F31 1 F7 11 Existed 2 F32 1 10 3 F33 1 9 4 F34 1 15 5 F35 1 14 6 F36 1 13 - Also check harness for short to ground and short to power.
Is the inspection result normal?
YES: GO TO 9.
NO: Repair open circuit, short to ground or short to power in harness or connectors.
- CHECK IGNITION COIL WITH POWER TRANSISTOR
Check ignition coil with power transistor. Refer to "COMPONENT INSPECTION (IGNITION COIL WITH POWER TRANSISTOR) ".
Is the inspection result normal?
YES: Check intermittent incident. Refer to "INTERMITTENT INCIDENT ".
NO: Replace malfunctioning ignition coil with power transistor. Refer to "EXPLODED VIEW ".