Owner`s manual

90
Chapter 12 Troubleshooting Procedures
12-1. Individual Troubleshooting Procedures
This chapter describes troubleshooting guidelines for the causes of main error messages as well
as error symptoms.
Note:
 The messages described herein sometimes appear simultaneously with other screens.
 For details regarding circuit inspection, see the electrical wiring diagrams of the applicable
vehicle.
 Communications lines are determined by the system and communication method.
 For details regarding the data-link-connector terminal configuration, see the electrical wiring
diagrams of the applicable vehicle.
No. Message/Symptom Cause Remedy
1. Verify that the V.C.I. switch is ON.
2. Verify the vehicle battery is sufficiently charged
(12V).
3. Disconnect and reconnect the connector.
4. Check if there is a short in the harness. (Try using a
different harness.)
1
The V.C.I. does not
power up when
connected to the
vehicle correctly. Be
sure the IG switch is
ON.
Vehicle power supply
failure due to:
 V.C.I. switch turned
OFF
 Low battery
 Vehicle harness not
connected or a short
exists
 Hardware error
5. If the problem is not resolved by remedies 1-4,
there may be a hardware error. Request inspection
with the harness.
1. Verify that PC is ON.
2. Verify that appropriate USB cable is firmly
connected between the PC and V.C.I. (Do not use a
USB hub.)
3. Disconnect and reconnect the connector.
4. Check if there is a short in the cable. (Try using a
different harness.)
2
The V.C.I. does not
power up from the PC
connection with the
USB cable. V.C.I. is
not connected to
vehicle at this time.
PC power supply
failure due to:
 PC power not
activated
 USB cable not
connected or a short
exists
 Hardware error
(PC or V.C.I.)
5. If the problem is not resolved by remedies 1-4,
there may be a hardware error. Request inspection
with the PC.
1. Turn the V.C.I. OFF.
2. Disconnect USB cable and connector.
3. Turn the V.C.I. power ON.
(Do not touch “Esc” key.)
3
The screen
“Maintenance Mode”
appears as soon as
the V.C.I. is powered
up.
V.C.I. was powered on
with pressing “Esc” key.
4. If the “Main Menu” or “PC Communication” display
does not appear, the V.C.I.may be at fault.
Request inspection.
Individual Troubleshooting Procedures