
5-15
• Neutral Switch Malfunction
• Before following test, perform the neutral position check.
Engine speed does not increase in gears (BF150A only).
1. Switch condition check with the Dr. H
-1. Turn the ignition switch OFF and connect the Dr. H.
-2. Turn the ignition switch ON and check the neutral
switch condition using the Dr. H.
Does the switch position agree with the indication
of the tester?
YES – Substitute a known-good ECM and recheck.
NO – Perform “2. Neutral switch line check”.
2. Neutral switch line check
-1. Turn the neutral switch OFF and disconnect the neutral
switch 2P connector.
-2. Check for the continuity between the No. 1
(Black/Blue) terminal of the neutral switch harness
side 2P connector and the engine ground.
Is there the continuity?
YES – Repair short in the wire of the main harness.
NO – Go to the step 3.
-3. Check for the continuity between the No. 2 (Black)
terminal of the neutral switch harness side 2P con-
nector and the engine ground.
Is there the continuity?
YES – Go to the step 4.
NO – Repair open in the main wire harness.
-4. Disconnect the ECM connector B.
-5. Check for the continuity between the No. 13
(Black/Blue) terminal of the ECM harness side con-
nector B and the No. 1 (Black/Blue) terminal of the
neutral switch harness side 2P connector.
Is there the continuity?
YES – Perform “3. Neutral switch check”.
NO – Repair open in the main harness.
3. Neutral switch check
-1. Turn the ignition switch OFF and disconnect the neu-
tral switch 2P connector.
-2. Check for the continuity between the No. 1 (Black)
terminal and the No. 2 (Black/Blue) terminal of the
neutral switch side 2P connector.
Is there the continuity with the gear in Neutral and
no continuity with the gear in other than Neutral?
YES – Substitute a known-good ECM and recheck.
NO – The neutral switch is faulty.
VIEWED FROM THE
TERMINAL SIDE
BLACK/BLUE
NEUTRAL SWITCH HARNESS
SIDE 2P CONNECTOR
VIEWED FROM THE
TERMINAL SIDE
NEUTRAL SWITCH HARNESS
SIDE 2P CONNECTOR
NEUTRAL SWITCH
HARNESS SIDE 2P
CONNECTOR
ECM CONNECTOR B
VIEWED FROM THE
TERMINAL SIDE
VIEWED FROM THE
TERMINAL SIDE
NEUTRAL SWITCH SIDE 2P
CONNECTOR
BLACK
NTSW
(BLACK/BLUE)
Содержание BF135A
Страница 1: ...BF135A BF150A...
Страница 49: ...2008 66ZY600Z 2008 02...