Repair Car Lighter
Buying a used “old” car
may have several drawbacks; some of them are aging parts. On electrical side,
there is usually just a “simple” breakage on connection. Such as: loose
connection, rusty/oxidation, or rotten cables (due to heat or humidity exposures).
Following tutorial is an example of malfunctioning
car lighter repair. The impact of this malfunction is not functioning USB charger
which is plugged into it.- Multimeter (Voltmeter and Ohmmeter)
- Pliers
- Cutter/file
- Contact Cleaner or any anti rust spray (such as WD4o*)
Repair Step:
- Measure voltage on (+) terminal and (-) of the lighter using voltmeter. Normal voltage shall be greater than 12V.
a.
If it is 0V,
there must be loose wire or connection. Measure resistance between both
terminals. Resistance must be 100K Ohms, or oL (no connection, there must be no
short circuit). If there is short circuit, trace “wild connection” which causes
the short, and break it. Change the Fuse after the wild connection has been broken.
b.
If it is
less than 12V, there is usually an oxidation or rust at connecting terminal.
The example on my case is only 9V which is insufficient to power up USB
Charger.
2. Unplug and
measure the voltage at connector behind the lighter. If it is greater than 12V,
meaning the voltage up to the connector is good.
The damage location is at the lighter after
the connector.
3. Remove
cover panel of the lighter by pulling it straight forward:
4. Measure the terminal connection resistance:
a. Measure
terminal connector (-) to the body of the lighter using Ohmmeter. The
resistance must .
be less than 3 Ohms.
b. Measure terminal connector (+) to centre screw
(terminal) of the lighter using Ohmmeter. The
resistance must be less than 3
Ohms.
c. If
terminal resistance above is high, meaning there “damage” is at the terminal.
The example on my case is the resistance between terminal (+) to the centre
screw intermittently varies between 17 to 150 Ohms. This means there is bad
connection.
d. Trace
every connection using Ohmmeter, where is the location of the problematic
resistance:
5.
After the
problematic resistance location is found, repair the connection at the place as
following: open the crimping, scratch
the metal contact surface using cutter or file from rust/oxidation.
6.
Fasten it
back using pliers.
7.
Spray Contact
Cleaner/anti rust WD4* to prevent the rust growing back. Do not wipe off.
8.
Re-measure
the resistance at the ex-problematic location to ensure it is already less than
3 Ohms.
9.
Measure
the resistance between (+) and (-) too. There must be no short circuit (the
resistance must be above 100 Kilo Ohms, or oL (no connection)).
10.
Install
back, check the function:
Profil
Ceria:
Baru kesampaian memiliki Ceria di 30 Juli 2017. Kondisi 2nd murah-meriah, dengan beberapa PR yang perlu di-optimasi. Kesempatan untuk belajar bertahap, dan mencicil biaya perbaikan pelan-pelan, daripada kredit Mobil Baru melibatkan bank/leasing/rentenir = dosa riba :[
Baru kesampaian memiliki Ceria di 30 Juli 2017. Kondisi 2nd murah-meriah, dengan beberapa PR yang perlu di-optimasi. Kesempatan untuk belajar bertahap, dan mencicil biaya perbaikan pelan-pelan, daripada kredit Mobil Baru melibatkan bank/leasing/rentenir = dosa riba :[
Wallahu
musta’an
Great post, and great website. Thanks for the information! 4 in 1 dual usb car cigarette lighter
ReplyDeleteThanks bro
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