CS35 2013.04
3.1.13-19 3.1.13-19Electronic Control System - ME7
Intermittent Malfunction Diagnosis
CAUTION: Clear the DTC.
CAUTION: Carry out the simulation testing.
CAUTION: Inspect and shake the wiring harness, connectors and terminals.
If DTC inspection cannot confirm the fault, the fault occurs occasionally while using. Confirm the circuits
and components that may lead to malfunction. Carry out the basic inspections as shown in the flow chart
to find out trouble location effectively in many cases. Particularly the malfunctions such as bad contact of
wiring harness connector.
Malfunction definition: This malfunction currently does not appear, but the historical malfunction diagno-
sis code record indicates that the malfunction occurred before. Or customer reports the malfunction, but
as the malfunction is not related to the malfunction diagnosis code, and currently the malfunction symp-
toms can not show again.
Test Conditions Details/Results/Actions
1. Vibration method
A. If driving on a tough roads, the malfunction occurs
or becomes more serious, or the engine start
vibration, perform the following steps.
B. There are several reasons that will cause electric
faults to the vehicle or engine vibration. Inspect the
following items:
• The connector is not fully in position.
• The wiring harness does not have
enough clearance.
• The wiring harness layout cross the
stand, or moving components.
• The wiring harness lays too close to the
high temperature components.
C. Incorrect wiring, tight or loose wiring harness will
lead the connecting cable to be squeezed between
the components.
D. The connector joint, the vibration location, the
location of the wiring harness crossed, are all
required for focus inspection, such as: wiring
harness across the firewall and the body panels.
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