NO.28 CRUISE CONTROL SYSTEM OPERATION CANCELLATION IS PERFORMED REGARDLESS OF CRUISE CONTROL SWITCH (CANCEL SWITCH) OPERATION [MZR-CD 2.2]

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CRUISE CONTROL SYSTEM OPERATION CANCELLATION IS PERFORMED REGARDLESS OF CRUISE CONTROL SWITCH (CANCEL SWITCH) OPERATION
DESCRIPTION
•  During cruise control system operation (while PCM controls at set vehicle speed), the cruise control system operation stops even though the CANCEL switch is not operated.
POSSIBLE CAUSE
•  Cruise control switch signal error
•  Brake switch signal error
•  CPP switch signal error
•  Neutral switch signal error
•  ECT sensor signal error
•  CKP sensor signal malfunction
•  CMP sensor malfunction
•  Vehicle speed signal error from ABS HU/CM, DSC HU/CM
Note
•  If any of the following conditions is met during cruise control system operation (while PCM controls at set vehicle speed), the cruise control system operation stops regardless of the CANCEL switch operation (cruise indicator light changes from cruise set indicator light (green) to cruise main indicator light (amber)).
―  Brake switch (No.1): ON (brake pedal depressed)
―  Brake switch (No.2): ON (brake pedal depressed)
―  Clutch switch: ON (clutch pedal depressed)
―  Neutral switch: ON (shift lever is in neutral)
―  Engine speed: 5,000 rpm or more
―  Engine coolant temperature: -40 °C {-40 °F} or less
―  Vehicle speed: Lower than 15 km/h {9.3 mph} to set vehicle speed
―  Vehicle speed: 310 km/h {193 mph} or more, or 20.5 km/h {12.7 mph} or less
―  Rapid acceleration or deceleration
(Acceleration speed of 9.8 m/s {32 ft/s} or more for 1 s, or deceleration speed of 9.8 m/s {32 ft/s} or more for 1 s)
―  Cruise control switch (SET+, SET-switch): Long press for 60 s or more
―  Input signal to PCM from CKP sensor is cut (not a malfunction such as DTC is detected)
―  Input signal to PCM from CMP sensor is cut (not a malfunction such as DTC is detected)

Diagnostic Procedure

STEP

INSPECTION

RESULTS

ACTION
1
Connect the M-MDS to the DLC-2.
Verify that no DTCs are stored in the PCM, ABS HU/CM, and DSC HU/CM.
(See ON-BOARD DIAGNOSTIC TEST [MZR-CD 2.2].)
(See ON-BOARD DIAGNOSIS [ABS].)
(See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)
Is DTC stored?
Yes
Repair the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [MZR-CD 2.2].)
(See ON-BOARD DIAGNOSIS [ABS].)
(See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)
No
Go to the next step.
2
Using the M-MDS, display the cruise control switch signal PID.
•  SC_CANCEL
•  SC_LMP
•  SC_OFF
•  SC_ON
•  SC_RES
•  SC_SET-
•  SC_SET+
•  SCCS
Does the monitor value correspond to the cruise control switch operation?
(See PCM INSPECTION [MZR-CD 2.2].)
Yes
Go to the next step.
No
Inspect the cruise control switch and related wiring harness.
(See CRUISE CONTROL SWITCH INSPECTION [MZR-CD 2.2].)
•  Malfunction in the switch or wiring harness:
―  Repair or replace the malfunctioning location.
•  No malfunction in the switch or wiring harness:
―  Go to the next step.
3
Using the M-MDS, display the clutch pedal position (CPP) switch signal PID.
•  CPP
Does the monitor value correspond to the clutch pedal operation?
(See PCM INSPECTION [MZR-CD 2.2].)
Yes
Go to the next step.
No
Inspect the CPP switch and related wiring harness.
(See CLUTCH PEDAL POSITION (CPP) SWITCH INSPECTION [MZR-CD 2.2].)
•  Malfunction in the switch or wiring harness:
―  Repair or replace the malfunctioning location.
•  No malfunction in the switch or wiring harness:
―  Go to the next step.
4
Using the M-MDS, display the engine coolant temperature signal PID.
•  ECT
Does the monitor value correspond to the engine coolant temperature?
(See PCM INSPECTION [MZR-CD 2.2].)
Yes
Go to the next step.
No
Inspect the ECT sensor and related wiring harness.
(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [MZR-CD 2.2].)
•  Malfunction in the sensor or wiring harness:
―  Repair or replace the malfunctioning location.
•  No malfunction in the sensor or wiring harness:
―  Go to the next step.
5
Using the M-MDS, display the vehicle speed signal PID.
•  VSS
Does the monitor value correspond to the vehicle speed?
(See PCM INSPECTION [MZR-CD 2.2].)
Yes
Go to the next step.
No
Inspect the ABS wheel speed sensor and related wiring harness.
(See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.)
(See REAR ABS WHEEL-SPEED SENSOR INSPECTION.)
•  Malfunction in the sensor or wiring harness:
―  Repair or replace the malfunctioning location.
•  No malfunction in the sensor or wiring harness:
―  Go to the next step.
6
Using the M-MDS, display the brake switch No.1 signal PID.
•  BOO
Does the monitor value correspond to the brake pedal operation?
(See PCM INSPECTION [MZR-CD 2.2].)
Yes
Go to the next step.
No
Inspect the brake switch No.1 and related wiring harness.
(See BRAKE SWITCH INSPECTION.)
•  Malfunction in the switch or wiring harness:
―  Repair or replace the malfunctioning location.
•  No malfunction in the switch or wiring harness:
―  Go to the next step.
7
Inspect the brake switch No.2 and related wiring harness.
(See BRAKE SWITCH INSPECTION.)
Is the brake switch No.2 and wiring harness normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location.
(See BRAKE PEDAL REMOVAL/INSTALLATION [L.H.D.].)
(See BRAKE PEDAL REMOVAL/INSTALLATION [R.H.D.].)
8
Inspect the CKP sensor and related wiring harness.
(See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [MZR-CD 2.2].)
Is the CKP sensor and wiring harness normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location.
(See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [MZR-CD 2.2].)
9
Visually inspect the CKP sensor pulse wheel.
Is there any damage or scratching to the CKP sensor pulse wheel?
Yes
Replace the crankshaft pulley.
(See TIMING CHAIN REMOVAL/INSTALLATION [MZR-CD 2.2].)
No
Go to the next step.
10
Inspect the CMP sensor and related wiring harness.
(See CAMSHAFT POSITION (CMP) SENSOR INSPECTION [MZR-CD 2.2].)
Is the CMP sensor and wiring harness normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location.
(See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [MZR-CD 2.2].)
11
Visually inspect the CMP sensor pulse wheel.
Is there any damage or scratching to the CMP sensor pulse wheel?
Yes
Replace the intake side camshaft assembly.
(See CYLINDER HEAD GASKET REPLACEMENT [MZR-CD 2.2].)
No
Go to the next step.
12
Inspect the neutral and related wiring harness switch.
(See NEUTRAL SWITCH INSPECTION [MZR-CD 2.2].)
Is the neutral switch and wiring harness normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location.
(See NEUTRAL SWITCH REMOVAL/INSTALLATION [A26M-R].)
13
Verify test results.
•  If normal, return to the diagnostic index to service any additional symptoms.
•  If the malfunction remains, inspect the related Service Information and perform repair or diagnosis.
―  If the vehicle is repaired, troubleshooting completed.
―  If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if later calibration is available. Retest.