Clutch Switch Circuit

CRUISE CONTROL: CRUISE CONTROL SYSTEM: Clutch Switch Circuit

Clutch Switch Circuit

DESCRIPTION

Clutch switch circuit inspection is necessary for M/T vehicles.
When the clutch pedal is released, the ECM receives the positive (+) battery voltage through the ECU-IG fuse and ignition switch. While the clutch pedal is depressed, the clutch switch assembly sends a signal to terminal D of the ECM. The ECM cancels cruise control when terminal D receives the signal (voltage of below 1 V).

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (ECM - BATTERY)




(a) Disconnect the C20 ECM connector.
(b) Turn the ignition switch to the ON position.
(c) Measure the voltage.
Standard voltage:





(d) Reconnect the ECM connector.
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
NG -- Continue to next step.
2. INSPECT CLUTCH SWITCH ASSEMBLY




(a) Disconnect the clutch switch connector.
(b) Measure the resistance.
Standard resistance:





(c) Reconnect the clutch switch connector.
NG -- REPLACE CLUTCH SWITCH ASSEMBLY
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (CLUTCH SWITCH ASSEMBLY - ECM)




(a) Disconnect the C20 ECM connector.
(b) Disconnect the A29 clutch switch connector.
(c) Measure the resistance.
Standard resistance:





(d) Reconnect the clutch switch connector.
(e) Reconnect the ECM connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (CLUTCH SWITCH ASSEMBLY - ECM)
OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (CLUTCH SWITCH ASSEMBLY - BATTERY)