Inspection Procedure 17

Deceleration Shock

COMMENT
- There may be a sudden change in air flow through the throttle valve, causing the vehicle to decelerate rapidly for an instant.

TROUBLESHOOTING HINTS (The most likely causes for this case:)
- Malfunction of the electronic control throttle valve system.

DIAGNOSIS

Required Special Tool:
- MB991502: Scan Tool (MUT-II)




STEP 1. Using scan tool MB991502, read the diagnostic trouble code (DTC).

CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502.

1. Connect scan tool MB991502 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Read the DTC.
4. Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is DTC set?

YES: Refer to Diagnostic Trouble Code Chart.

NO: Refer to On-vehicle Service - Clean the throttle valve area.