Check for damaged harness and terminals including rubber seals :
-. contact resistance, oxidation, corrosion, bent or broken terminals
-. harness connector connection, loose wires etc.
Check for poor connection between ECM and component :
-. backed out terminal, improper mating, broken locks and poor terminal to wire connection
ARE THE WIRES O.K ? & ARE THE CONNECTIONS O.K ?
YES
Go to "Signal Circuit Inspection" procedure
NO
Repair as necessary and go to " Verification of Vehicle Repair " procedure
DTCs listed below is stored in the scan tool
P0704
Check items with the scan tool and the multimeter
① Wiring harness inspection
② Check the fuse
③ Check the clutch switch
Specification
Resitance : below 1 Ω for open in the wire
Resitance : infinite for short to ground in the wire
Voltage : below 0.5V for short to power in the wire
Battery voltage : Approx. 12V
Refer to the component and full circuit for connector configrations details
Disconnect the clutch switch and turn the ignition switch ON, measure the voltage between the clutch switch terminal 1 and the clutch switch terminal 2.
IS THERE A BATTERY VOLTAGE ?
YES
Go to step 5
NO
Repair open or short in the wire between the clutch switch terminal 1 and the ECM terminal 61/C230-1.
Repair open or short in the wire between the clutch switch terminal 2 and the body ground.
Go to step 3
Check the voltage at the ECM terminal 61/C230-1 directly.
IS THERE A BATTERY VOLTAGE ?
YES
Repair open or short in the wire between the clutch switch terminal 1 and the ECM terminal 61/C230-1
Go to step 5
NO
Replace a known - good ECM and recheck. If approx. 12V is checked, replace the ECM.
Go to step 5
Connect the clutch switch and check the votage at the clutch switch terminal 1 when pressing the clutch pedal.
IS THERE 0 V ?
YES
Go to "Verification of Vehicle Repair" procedure
NO
Repair open in the wire between the clutch s/w terminal 2 and the body ground
Replace the clutch switch for checking the brake s/w, Go to "Component Inspection" procedure