Nissan March K13. Manual - part 504

PG-4

< SYSTEM DESCRIPTION >

COMPONENT PARTS

SYSTEM DESCRIPTION

COMPONENT PARTS

Circuit Breaker

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The PTC thermistor generates heat in response to current flow. The
temperature (and resistance) of the thermistor element varies with
current flow. Excessive current flow will cause the element's temper-
ature to rise. When the temperature reaches a specified level, the
electrical resistance will rise sharply to control the circuit current.
Reduced current flow will cause the element to cool. Resistance falls
accordingly and normal circuit current flow is allowed to resume.

Battery

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NOTE:
For the battery type application, refer to the following list.
• Type 1
- For Pakistan without rear wiper
- For Thailand (M/T models)
• Type 2
- Except for Pakistan without rear wiper
- Except for Thailand (M/T models)

Harness Connector

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HARNESS CONNECTOR (TAB-LOCKING TYPE)

• The tab-locking type connectors help prevent accidental looseness or disconnection.
• The tab-locking type connectors are disconnected by pushing or lifting the locking tab(s). Refer to the figure

below.

CAUTION:

Never pull the harness or wires when disconnecting the connector.

SEL109W

Application

Type 1

Type 2

Type

34B19L

46B19L

20 hour rate capacity

[V – Ah]

12 – 30

12 – 45

Cold cranking current (For reference value)

[A]

272

325

PG

COMPONENT PARTS

PG-5

< SYSTEM DESCRIPTION >

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[Example]

HARNESS CONNECTOR (SLIDE-LOCKING TYPE)

• A new style slide-locking type connector is used on certain systems and components, especially those

related to OBD.

• The slide-locking type connectors help prevent incomplete locking and accidental looseness or disconnec-

tion.

• The slide-locking type connectors are disconnected by pushing or pulling the slider. Refer to the figure

below.

CAUTION:

• Never pull the harness or wires when disconnecting the connector.
• Be careful not to damage the connector support bracket when disconnecting the connector.

SEL769DA

PG-6

< SYSTEM DESCRIPTION >

COMPONENT PARTS

[Example]

HARNESS CONNECTOR (LEVER LOCKING TYPE)

• Lever locking type harness connectors are used on certain control units and control modules such as ECM,

ABS actuator and electric unit (control unit), etc.

• Lever locking type harness connectors are also used on super multiple junction (SMJ) connectors.
• Always confirm the lever is fully locked in place by moving the lever as far as it will go to ensure full connec-

tion.

CAUTION:

SEL769V

PG

COMPONENT PARTS

PG-7

< SYSTEM DESCRIPTION >

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Always confirm the lever is fully released (loosened) before attempting to disconnect or connect these
connectors to avoid damage to the connector housing or terminals.

Standardized Relay

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NORMAL OPEN, NORMAL CLOSED AND MIXED TYPE RELAYS

Relays can mainly be divided into three types: normal open, normal closed and mixed type relays.

TYPE OF STANDARDIZED RELAYS

LKIA0670E

1.

Control unit with single lever
A. Fasten
B. Loosen
C. Lever

2.

Control unit with dual levers
A. Levers
B. Fasten
C. Loosen

3.

SMJ connector
A. Lever
B. Fasten
C. Loosen

SEL881H