Inspection Procedure 5

Inspection Procedure 5: Cruise Control cannot be Set (No Response "COAST/SET" Switch and "ACC/RES" Switch is Pressed.)

COMMENT

The fail-safe function is probably canceling cruise control system. In this case, checking the cruise control system, MFI system, CVT system [CVT], ASC system and CAN bus line system DTCs. The scan tool MB991958 can also be used to check if the circuits of each input switch are normal or not by checking the data list.
NOTE:
Press the cruise control switches one by one securely. Otherwise, the cruise control system may not be started.

TROUBLESHOOTING HINTS (THE MOST LIKELY CAUSES FOR THIS CASE:)

- Malfunction of the CAN bus line system.
- Malfunction of the MFI system.
- Malfunction of the CVT system[ CVT].
- Malfunction of the ASC system.
- Malfunction of the cruise control switch.
- Malfunction of the stoplight switch.
- Malfunction of the clutch switch[ M/T].
- Malfunction of the transmission range switch[ CVT].
- Malfunction of the TCM[ CVT].
- Malfunction of the ECM.

DIAGNOSTIC PROCEDURE

CAUTION:
If there is any problem in the CAN bus lines, an incorrect DTC may be set. Prior to this diagnosis, diagnose the CAN bus lines CAN Bus Line Diagnostics Flow.)

STEP 1. Using scan tool MB991958, diagnose the CAN bus line.

(1)
CAUTION:
To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.

Connect scan tool MB991958 to the data link connector (Refer to Reading and Clearing Diagnostic Trouble Codes).

(2)Turn the ignition switch to the "ON" position.

(3)Set scan tool MB991958 to diagnose the CAN bus line (Refer to Scan Tool Testing and Procedures).

Q. Is the check result satisfactory?

YES Go to Step 2.
NO Repair the CAN bus lines CAN Bus Diagnostics Chart). Then go to Step 12.
STEP 2. Using scan tool MB991958, check for ECM option coding data.

(1)Connect scan tool MB991958 to the data link connector (Refer to Reading and Clearing Diagnostic Trouble Codes.)

(2)Turn the ignition switch to the "ON" position.

(3)Check for ECM option coding data Programming and Relearning.)

Q. Is the cruise control item of the ECM option coding data enabled?

YES Go to Step 3.
NO Set the ECM option coding data again. Programming and Relearning.) Then go to Step 12.
STEP 3. Using scan tool MB991958, read the MFI system DTC.

(1)Connect scan tool MB991958 to the data link connector (Refer to CAN Bus Diagnostics Chart).

(2)Turn the ignition switch to the "ON" position.

(3)Set scan tool MB991958 to check for MFI system DTC Reading and Clearing Diagnostic Trouble Codes).

Q. Is any DTC set?

YES Repair the MFI system Multiport Fuel Injection (MFI)). Then go to Step 12.
NO Go to Step 5 [M/T].
NO Go to Step 4 [CVT].
STEP 4. Using scan tool MB991958, read the CVT system DTC [CVT].

(1)Connect scan tool MB991958 to the data link connector (Refer to Reading and Clearing Diagnostic Trouble Codes).

(2)Turn the ignition switch to the "ON" position.

(3)Set scan tool MB991958 to check for CVT system DTC Reading and Clearing Diagnostic Trouble Codes.)

Q. Is any DTC set?

YES Repair the CVT system Continuously Variable Transaxle (CVT)). Then go to Step 12.
NO Go to Step 5.
STEP 5. Using scan tool MB991958, read for ASC system DTC.

(1)Connect scan tool MB991958 to the data link connector (Refer to Reading and Clearing Diagnostic Trouble Codes).

(2)Turn the ignition switch to the "ON" position.

(3)Set scan tool MB991958 to check for ASC system DTC Reading and Clearing Diagnostic Trouble Codes.)

Q. Is any DTC set?

YES Repair the ASC system Active Stability Control System (ASC)) . Then go to Step 12.
NO Go to Step 6.
STEP 6. Read the cruise control system DTC.

(1)Disconnect the negative (-) battery terminal, to erase the DTC of the cruise control system.

(2)Connect the negative (-) battery terminal.

(3)Turn the ignition switch to the "ON" position, and press the "ON/OFF" switch to turn the cruise control system to ON (turn on the "CRUISE" indicator light).

(4)After turning the cruise control system to ON, when 2 minutes or more has elapsed without operating the cruise control switches, read the DTC of the cruise control system (Refer to Reading and Clearing Diagnostic Trouble Codes).

Q. Is any DTC set?

YES Repair the cruise control system (Refer to Cruise Control, Diagnostic Trouble Code Chart). Then go to Step 12.
NO Go to Step 7.
STEP 7. Using scan tool MB991958, check the data list item 75: Cancel switch, item 86: Main switch, item 91: Resume switch and item 92: Set switch.

(1)Connect scan tool MB991958 to the data link connector (Refer to Reading and Clearing Diagnostic Trouble Codes.)

(2)Turn the ignition switch to the "ON" position.

(3)Set scan tool MB991958 to data reading mode for cruise control system (Refer to Scan Tool Testing and Procedures.)

- Item 75: Cancel switch.
- When "CANCEL" switch is pressed, the display on scan tool MB991958 should be "ON".
- When "CANCEL" switch is released, the display on scan tool MB991958 should be "OFF".
- Item 86: Main switch.
- When "ON/OFF" switch is pressed, the display on scan tool MB991958 should be "ON".
- When "ON/OFF" switch is pressed again, the display on scan tool MB991958 should be "OFF".
- Item 91: Resume switch.
- When "ACC/RES" switch is pressed, the display on scan tool MB991958 should be "ON".
- When "ACC/RES" switch is released, the display on scan tool MB991958 should be "OFF".
- Item 92: Set switch.
- When "COAST/SET" switch is pressed, the display on scan tool MB991958 should be "ON".
- When "COAST/SET" switch is released, the display on scan tool MB991958 should be "OFF".

Q. Is the switch operating properly?

YES Go to Step 8.
NO Repair the cruise control switch system (Refer to DTC 15, Diagnostic Trouble Code Procedures - DTC 15: Cruise Control Switch System.) Then go to Step 12 .
STEP 8. Using scan tool MB991958, check the data list item 74: Brake light switch, item 89: Normally closed brake switch.

(1)Connect scan tool MB991958 to the data link connector (Refer to Reading and Clearing Diagnostic Trouble Codes).

(2)Turn the ignition switch to the "ON" position.

(3)Set scan tool MB991958 to data reading mode for cruise control system (Refer to Scan Tool Testing and Procedures).

- Item 74: Brake light switch.
- When the brake pedal is depressed, the display on scan tool MB991958 should be "ON".
- When the brake pedal is released, the display on scan tool MB991958 should be "OFF".

- Item 89: Normally closed brake switch.
- When the brake pedal is depressed, the display on scan tool MB991958 should be "ON".
- When the brake pedal is released, the display on scan tool MB991958 should be "OFF".

Q. Is the switch operating properly?

YES Go to Step 9 [M/T].
YES Go to Step 10 [CVT].
NO Repair the stoplight switch system (Refer to DTC 22, Diagnostic Trouble Code Procedures - DTC 22: Stoplight Switch System.) Then go to Step 12 .
STEP 9. Using scan tool MB991958, check data list item 78: Clutch switch [M/T.]

(1)Connect scan tool MB991958 to the data link connector (Refer to Reading and Clearing Diagnostic Trouble Codes.)

(2)Turn the ignition switch to the "ON" position.

(3)Set scan tool MB991958 to data reading mode for cruise control system (Refer to Scan Tool Testing and Procedures.)

- Item 78: Clutch switch.
- When the clutch pedal is depressed, the display on scan tool MB991958 should be "ON".
- When the clutch pedal is released, the display on scan tool MB991958 should be "OFF".

Q. Is the switch operating properly?

YES Go to Step 11.
NO Repair the clutch switch system (Refer to , Symptom Procedures - Inspection Procedure 2.) Then go to Step 12.
STEP 10. Using scan tool MB991958, check the data list item 88: Neutral switch [CVT].

(1)Connect scan tool MB991958 to the data link connector (Refer to Reading and Clearing Diagnostic Trouble Codes).

(2)Turn the ignition switch to the "ON" position.

(3)Set scan tool MB991958 to data reading mode for cruise control system (Refer to Scan Tool Testing and Procedures).

- Item 88: Neutral switch.
- When the selector lever is moved to "N" or "P" position, the display on scan tool MB991958 should be "ON".
- When the selector lever is moved to other than "N" or "P" position, the display on scan tool MB991958 should be "OFF".

Q. Is the switch operating properly?

YES Go to Step 11.
NO Repair the CVT system P0705). Then go to Step 12.
STEP 11. Check the symptom.

Q. Can cruise control be set?

YES It can be assumed that this malfunction is intermittent How to Cope With Intermittent Malfunctions).
NO Replace the ECM [ Removal and Replacement]. Then go to Step 12.
STEP 12. Check the symptom.

Q. Can cruise control be set?

YES The procedure is complete.
NO Return to Step 1.