1.CHECK CLUTCH SWITCH CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the clutch switch harness connector.
3) Turn the ignition switch to ON.
4) Measure the voltage between harness connector terminal and chassis ground.
Connector & terminal
(B107) No. 1 (+) — Chassis ground (−):
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Is the voltage 10 V or more?
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• Check fuse No. 4 (in fuse & relay box).
• Check open or shorted circuit of harness between clutch switch and fuse & relay box.
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2.CHECK CLUTCH SWITCH CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector of ECM.
3) Measure the resistance between clutch switch harness connector terminal and ECM harness connector terminal.
Connector & terminal
Gasoline engine model
(B107) No. 2 — (B136) No. 25:
Diesel engine model
(B107) No. 2 — (B135) No. 28:
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Is the resistance less than 10 Ω?
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3.CHECK CLUTCH SWITCH.
Check the clutch switch. 
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Replace the ECM. 
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Replace the clutch switch. 
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