MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-1014
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.
• Dirtiness around throttle valve.
DIAGNOSIS
Required Special Tools:
• MB991958: Scan Tool (MUT-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: USB Cable
• MB991910: Main Harness A
STEP 1. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 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 the DTC set?
YES : Refer to Diagnostic Trouble Code Chart
P.13A-33
.
NO : Refer to On-vehicle Service
− Clean the throttle valve
area.
AK303804AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827