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.
To be sure the brake switch terminal number, in according to the with or without the cruise control system, go to "Component Inspection" procedure
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