Isuzu N-Series. Manual — part 1025
CAB AND CHASSIS ELECTRICAL 8-205
2-2. Backup Light on the Left (or Right) Side Inoperative
2-3. Backup Light Remains on
Starter Switch
Refer to “START AND CHARGING” in this section.
Horn
Inspection
Check to see if horn sound when a battery voltage be-
tween horn terminal and the fixing bracket. Repair or re-
place the horn when the result of inspection is found
abnormal.
N8A5226E
REPAIR OR REPLACE THE BACKUP LIGHT SW OR INHIBITOR SW
N8A0191E
N8A0192E
8-206 CAB AND CHASSIS ELECTRICAL
Removal
Preparation:
Disconnect the battery ground cable.
1. Bumper
Refer to “BUMPER” in section 2.
2. Horn
Disconnect the connector (3).
Installation
To install, follow the removal steps in the reverse order.
Horn Switch
Inspection
With the contact point of the horn switch pressed to the
switch bracket, check the continuity between the con-
nector terminal and the bracket of the switch.
Check the contact condition between horn contact of the
combination switch and contact plate of steering wheel.
Repair or replace the switch when the result of inspec-
tion is found abnormal.
Removal
Preparation:
Disconnect the battery ground cable.
1. Horn Pad
1) Hold the horn pad and pull it upward.
2. Steering Wheel
1) Remove the steering shaft nut.
2) Remove the steering wheel by using steering
wheel remover.
(Refer to Section 3B4 “STEERING COLUMN”
for steering wheel removal steps.)
3. Horn Switch
Installation
To install, follow the removal steps in the reverse order,
noting the following point.
1. Tighten the steering shaft nut to the specified
torque.
Tighten:
Shaft nut to 49 N
⋅m (5 kg⋅m / 36 lb⋅ft)
1
2
3
N8A5485E
N8A0194E
N8A0476E
CAB AND CHASSIS ELECTRICAL 8-207
Backup Light Bulb
Removal
Preparation:
Disconnect the battery ground cable.
1. Lens
2. Bulb
Installation
To install, follow the removal steps in the reverse order.
Backup Light Switch
Inspection
1. With the switch installed to the transmission, check
the continuity between the terminals of the switch
connectors.
When the continuity is found between the terminals
only with the switch shifted to the reverse position,
the switch is normal.
2. When the result of the above inspection is found
abnormal, remove the switch from the transmis-
sion and conduct a test on the switch alone.
If the continuity appears between the connector
terminals when the ball of the switch is released,
the switch is normal. (When the ball is pushed, the
continuity disappears.)
3. If there is no continuity with the switch installed to
the transmission, even though the switch is found
to be normal, then adjust the stroke of the switch by
changing the thickness of the switch gasket.
Removal
Preparation:
Disconnect the battery ground cable.
1. Backup Light Switch
1) Disconnect the connectors.
2) Remove the switch by turning it counterclock-
wise.
Installation
1. Backup Light Switch
Apply liquid gasket to the screw portion of the
switch to prevent oil leak.
Backup Buzzer
Inspection
Apply battery voltage to the backup buzzer connector to
check the buzzer sound.
Repair or replace the buzzer when the result of inspec-
tion is found abnormal.
N8A0195E
N8A0196E
N8A0197E
8-208 CAB AND CHASSIS ELECTRICAL
Removal
Preparation:
Disconnect the battery ground cable.
1. Rear Combination Light Cover
2. Backup Buzzer
1) Remove the rear combination light connector
fixing screw.
2) Remove buzzer fixing screw.
3) Disconnect the connector.
Installation
To install, follow the removal steps in the reverse order.
N8A0198E
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