1.CHECK CRUISE CONTROL COMMAND SWITCH CIRCUIT.
1) Remove the driver’s airbag module. 
2) Disconnect the harness connector of cruise control command switch.
3) Turn the ignition switch to ON.
4) Measure the voltage between harness connector terminal and chassis ground.
Connector & terminal
(ST3) No. 8 (+) — Chassis ground (−):
(ST3) No. 7 (+) — Chassis ground (−):
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Is the voltage 5 V or more?
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Check the harness between cruise control command switch and ECM, and the steering roll connector for open or short circuit, or for poor contact.
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2.CHECK CRUISE CONTROL COMMAND SWITCH CIRCUIT.
1) Turn the ignition switch to OFF.
2) Remove the cruise control command switch. 
3) Measure the resistance between harness connector terminal and chassis ground.
Connector & terminal
(ST3) No. 6 — Chassis ground:
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Is the resistance less than 10 Ω?
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Check for open circuit between cruise control command switch, ECM, and chassis ground and check the ECM.
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3.CHECK CRUISE CONTROL COMMAND SWITCH.
Measure the resistance between switch terminals when the cruise control command switch is not depressed.
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Is the resistance approx. 4 kΩ?
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Replace the cruise control command switch. 
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4.CHECK CANCEL SWITCH.
1) Turn the ignition switch to OFF.
2) Remove the cruise control command switch. 
3) Measure the resistance between switch terminals with the CANCEL switch pressed.
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Is the resistance approx. less than 1 Ω when the CANCEL switch is pressed?
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Replace the cruise control command switch. 
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5.CHECK SET/COAST SWITCH.
Measure the resistance between switch terminals with the SET/COAST switch pressed.
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Is the resistance approx. 250 Ω when SET/COAST switch is pressed?
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Replace the cruise control command switch. 
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6.CHECK RESUME/ACCEL SWITCH CIRCUIT.
Measure the resistance between switch terminals with the RESUME/ACCEL switch pressed.
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Is the resistance approx. 1,500 Ω when RESUME/ACCEL switch is pressed?
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Replace the ECM. 
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Replace the cruise control command switch. 
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