TOHATSU BFT75A Service Manual page 147

dummyhead dummyhead
FUEL SYSTEM
READING DTC WITH THE Dr.H
• The Dr.H can readout the DTC and other engine
conditions.
• Refer to the Instruction Manual for the Dr. H how to
use.
Turn the combination switch to OFF.
Remove the dummy connector [1] from the DLC [2].
Connect the Dr.H [3] to the DLC.
Turn the combination switch ON and check the DTC.
Read the DTC and follow the troubleshooting index
(page 5-13).
READING DTC WITHOUT THE Dr.H
• If the ECM has any DTC in its memory, it can be
read out by the number of blinks of the MIL.
Turn the combination switch to OFF.
Remove the engine cover.
Disconnect the dummy connector [1] from the DLC [2]
and short DLC terminals using the special tool.
TOOL:
SCS short connector [3]
Turn the combination switch ON, note the MIL blinks,
and refer to the "MIL INDEX". (page 5-43).
• The number of blinks of the MIL is the same as that
of the DTC main code. Note that the MIL does not
show any sub code.
• The MIL has two types of blinks, a long blink and
short blink. One long blink is the equivalent of 10
short blinks. For example, when 1 long blink is
followed by 4 short blinks, the MIL is 14 (1 long
blinks = 10 blinks, plus 4 short blinks).
• When multiple problems occur simultaneously, the
MIL repeatedly indicates them by blinking separate
codes, one after another.
INSPECTION AT ECM CONNECTOR
• Always clean around and keep any foreign material
away
disconnecting it.
• A faulty PGM-FI system is often related to poorly
connected or corroded terminals. Check those
connections before proceeding.
• In testing at the ECM connector (wire harness side)
terminal, always use the test probe. Insert the test
probe into the connector terminal, and then attach
the digital multimeter probe to the test probe.
TOOL:
Test probe [2]
5-6
070PZ-ZY30100
from the ECM [1] connector
07ZAJ-RDJA110
[1]
[2]
[1]
[2]
Single problem:
Multiple problems:
before
[1]
[2]
[3]
[3]
See DTC 3
See DTC 14
See DTC 3 and 4
See DTC 3 and 14