Mazda MX-6 1998, Workshop Manual

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TROUBLESHOOTING [CRUISE CONTROL SYSTEM]
Symptom Troubleshooting
1 Set speed is not kept even when SET switch is depressed.
TROUBLESHOOTING HINTS
Improper operation by customer
• Steps 1, and 3 to 5
Malfunction of clock spring and related parts
• Step 6
Malfunction in DTC related areas which are detected by PCM self diagnosis inspection
• Step 7
Malfunction in power supply circuit for cruise actuator
• STOP 15 A fuse or TURN 10 A fuse malfunction
Malfunction of actuator cables and related parts
• Actuator cable malfunction
Malfunction of brake pedal and related parts
• Step 12
Malfunction of clutch pedal and related parts on MTX vehicles
• Step 13
Malfunction of clutch switch on/off signal and related parts
• Malfunction in wiring harness between cruise actuator and clutch switch
• Clutch switch malfunction
Malfunction of selector lever position signal and related parts
• Step 16
Malfunction of cruise actuator ignition 1 and GND signals and related parts
• Malfunction in wiring harness between TURN 10 A fuse and cruise actuator
• Malfunction in wiring harness between instrument cluster and ground
• Malfunction in wiring harness between cruise actuator and instrument cluster
• Instrument cluster’s base print plate malfunction
Malfunction of cruise control position signal switch and related parts
• Malfunction in wiring harness between cruise actuator and clock spring
• Short cord on clock spring malfunction : connected to cruise actuator or cruise control switch
• Cruise control switch malfunction
• Malfunction in wiring harness between TURN 10 A fuse and clock spring
• Short cord on clock spring malfunction : connected to TURN 10 A fuse or cruise control switch
• Cruise control switch malfunction
Malfunction of Brake on/off signal and related parts
• Malfunction in wiring harness between brake switch and cruise actuator
• Malfunction in wiring harness between STOP 15 A fuse and brake switch
• Malfunction in wiring harness between vehicle speedometer sensor and ground
• Malfunction in wiring harness between cruise actuator and vehicle speedometer sensor
• Speed sensor malfunction
• Malfunction
in wiring harness between STOP 15 A fuse and brake switch
• Malfunction in wiring harness between brake switch and cruise actuator
• Malfunction in wiring harness between STOP 15 A fuse and brake switch
• Brake switch malfunction
Malfunction of vehicle speedometer sensor on signal and related parts
• Cruise actuator malfunction
STEP INSPECTION ACTION
1 Did customer press SET switch within the
range of 40 km/h {25 MPH} to 160 km/h {100
MPH}? Yes Go to next step.
No The vehicle is operating normally. Explain to the customer
that the control cannot be set when the vehicle speed is
not within 40 km/h {25 MPH} to 160 km/h {100 MPH}.
2 Is it an ATX vehicle? Yes Go to step 4.
No
Go to next step.
3 Did a customer step on the clutch pedal when
depressing SET switch? Yes The vehicle is operating normally. Explain to the customer
that cruise control cannot be set as the system will be
canceled while stepping on the clutch pedal.
No Go to next step.
4
Did a customer step on the brake pedal when
depressing SET switch?
Yes
The vehicle is operating normally. Explain to the customer
that cruise control cannot be set as the system will be
canceled while stepping on the brake pedal.
No Go to next step.
5 Was the selector lever at N range when
depressing SET switch?
Yes
The vehicle is operating normally. Explain to the customer
that cruise control cannot be set as the system will be
canceled while the selector lever is at N range.
No Go to next step.
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