Electrical systems consist of a lot of harness and connectors, poor connection of terminals can cause various problems and damge of component.
Perform checking procedure as follows.
Check damage of harness and terminals : Check terminals for contact resistance, corrosion and deformation.
Check connecting condition of ECM and component connector : Check terminal seperation, damage of locking device and connecting condition between terminal and wiring.
Disconnect the pin which requires checking at male connector and insert it to the terminal at female connector for checking connecting condition. ( after checking, reconnect the pin at correct position. )
Is the problem found?
YES
Repair the trouble causing part and go to "Verification of Vehicle Repair".
NO
Go to "Signal Circuit Inspection".
Check clutch switch pull-up voltage
IG KEY "OFF", ENGINE "OFF".
Disconnect clutch switch connector.
IG KEY "ON".
Measure the voltage of terminal 2 of clutch switch connector.
Secification : 11.5V~13.0V
Is the measured voltage within the specification?
YES
Go to "Ground Circuit Inspection".
NO
Go to "2. Check open in clutch switch signal circuit" as follows.
Check open in clutch switch signal circuit
IG KEY "OFF", ENGINE "OFF".
Disconnect clutch switch connector and ECM connector.
Check continuity between clutch switch connector terminal 2 and ECM connector(CUD-K) terminal 79.
Secification : Continuity ( below 1.0Ω )
Is the measured resistance within the specification?
YES
Repair short to ground in signal circuit and go to "Verification of Vehicle Repair".
NO
Repair open in signal circuit and go to "Verification of Vehicle Repair".
IG KEY "OFF", ENGINE "OFF".
Disconnect clutch switch connector.
Check continuity between clutch switch connector terminal 1 and chassis ground.
Specification : Continuity ( below 1.0Ω )
Is the measured resistance within the specification?
YES
Go to "Component Inspection".
NO
Repair open or poor connection in ground circuit and go to "Verification of Vehicle Repair".