MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-578
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 con-
necting 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 the DTC is output?
YES :
Refer to, Diagnostic Trouble Code Chart
.
NO :
Go to Step 2.
STEP 2. Using scan tool MB991502, check actuator test
items 01, 02, 03, 04, 05, 06: Injector.
(1) Check following items in the actuator test. Refer to, Actuator
Test Reference Table
a. Item 01, 02, 03, 04, 05, 06: Injector.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the actuator operating properly?
YES :
Go to Step 3.
NO :
Refer to, DTC P0201, P0203, P0205
−
Injector Circuit
, DTC P0202, P0204, P0206
−
Injector
Circuit
STEP 3. Check the ignition timing.
(1) Refer to GROUP 11C, On-vehicle Service
−
Ignition Timing
Check
Q: Is the ignition timing normal?
YES :
Go to Step 4.
NO :
Check that the crankshaft position sensor and timing
belt cover are in the correct position. Then confirm
that the malfunction symptom is eliminated.
AKX01177
16 PIN
MB991502
AB
AKX01177
16 PIN
MB991502
AB
