Clutch Switch: Testing and Inspection

Clutch Switch Schematic:

A faulty clutch switch will set code 52 in the on-board diagnostic system. Refer to the schematic diagram and test the coolant sensor with the diagnostic chart.

Wire color code identification:

L: Blue
B: Black
Y: Yellow
G: Green
R: Red
W: White
Br: Brown
Lg: Light green
Gr: Gray

Clutch Switch Diagnostic Chart:

CLUTCH SWITCH DIAGNOSTIC CHART

ECU Connectors:

CHECK ECU AND CLUTCH SWITCH VOLTAGE AND RESISTANCE

1. With ignition switch "ON," measure voltage between ECU connector terminal and ground as follows:

Connector & terminal: Voltage:
(F120)5-Ground Below 1V (clutch released)
(F120)5-Ground Above 8V (clutch depressed)

2. Turn ignition "OFF" and disconnect clutch switch connector.
3. Measure resistance between clutch switch connector terminals as follows:

Connector & terminal: Resistance:
(F82)1-(F82)2 Below 1 Ohm (pedal released)
(F82)1-(F82)2 Infinite (pedal depressed)

CHECK ECU HARNESS

1. With ignition "OFF," disconnect ECU connector.
2. Measure resistance between ECU and clutch switch harness connector and between ECU connector and ground:

Connector & terminal: Resistance:
(F120)5-(F82)2 Below 1 Ohm
(F119)1-(F82)1 Below 1 Ohm
(F120)10-(F82)1 Below 1 Ohm
(F120)5-Ground Infinite
(F119)1-Ground Below 10 Ohms
(F120)10-Ground Below 10 Ohms