Clutch Switch Circuit

DESCRIPTION

Clutch switch circuit inspection is necessary for M/T vehicles.
When the clutch pedal is released, the ECM receives positive (+) battery voltage through the LH-IG fuse. While depressing the clutch pedal, the clutch switch sends a signal to terminal CLSW of the ECM. The ECM cancels cruise control drive when terminal CLSW receives the signal.

WIRING DIAGRAM

INSPECTION PROCEDURE

1. INSPECT ECM (CLSW TERMINAL)

1. Disconnect the A5 connector from the ECM.

2. Turn the engine switch on (IG).

3. Measure the voltage according to the value(s) in the table below.

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   A5-9 (CLSW) - Body ground	Clutch pedal depressed	Below 1 V
   	Clutch pedal released	10 to 14 V

OK	PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2. INSPECT CLUTCH SWITCH

1. Turn the engine switch off.

2. Disconnect the A21 connector from the clutch switch.

3. Remove the clutch switch (Click here).

4. Measure the resistance according to the value(s) in the table below.

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   1 - 2	Switch pin free (Clutch pedal depressed)	10 kΩ or higher
   	Switch pin pushed in (Clutch pedal released)	Below 1 Ω

NG	REPLACE CLUTCH SWITCH

OK

3. CHECK HARNESS AND CONNECTOR (ECM - CLUTCH SWITCH)

1. Measure the resistance according to the value(s) in the table below.

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   A5-9 (CLSW) - A21-2	Always	Below 1 Ω
   A5-9 (CLSW) - Body ground	Always	10 kΩ or higher

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - CLUTCH SWITCH)