IN−32 − INTRODUCTION HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS V08425 32 Author : Date: Indicates the position of the ignition switch during the check. Inspection Procedure LOCK ON Use the inspection procedure to determine if Ignition Switch LOCK (OFF) Ignition Switch ON the circuit is normal or abnormal, and, if it is abnormal, use it to determine whether the START ACC Ignition Switch START Ignition Switch ACC problem is located in the sensors, actuators, wire harness or ECU. INSPECTION PROCEDURE 1 Check continuity between terminal KNK of ECM connector and body ground. LOCK PREPARATION: KNK (a) Remove the glove compartment (See page SF−68). (b) Disconnect the E6 connector of ECM.
CHECK: Measure resistance between terminal KNK of ECM connector and body ground. E6 Connector OK: Resistance: 1 MΩ or higher AB0117 A00265 A00255 OK Go to step 3. NG 2 Check knock sensor (See page SF−61). OK Replace knock sensor. Indicates the place to check the voltage or resistance. Indicates the connector position to checked, from the front or back side. Wire Harness Check from the connector back side. Check from the connector front side. (without harness) (with harness) In this case, care must be taken not to bend the terminals. Indicates the condition of the connector of ECU during the check. KNK KNK E6 Connector E6 Connector Connector being checked is connected.
Connector being checked is disconnected. Inspection Procedure Use the inspection procedure to determine if the circuit is normal or abnormal, and, if it is abnormal, use it to determine whether the problem is located in the sensors, actuators, wire harness or ECU. Indicates the place to check the voltage or resistance. Indicates the connector position to checked, from the front or back side. Wire Harness Check from the connector back side. Check from the connector front side. (without harness) (with harness) In this case, care must be taken not to bend the terminals. Indicates the condition of the connector of ECU during the check.
KNK KNK E6 Connector E6 Connector Connector being checked is connected. Connector being checked is disconnected. 1 Check continuity between terminal KNK of ECM connector and body ground. 2 Check knock sensor (See page SF−61).