2001 NISSAN ALMERA bulb

strand will have a high resistance to the current. This will be picked
up as a slight voltage drop.
Unwanted resistance can be caused by many situations as follows:
+Undersized wiring (single strand example)
+Corrosion on switch contacts
+Loose wire connections or splices.
If repairs are needed always use wire that is of the same or larger
gauge.
Measuring Voltage Drop Ð Accumulated Method
1) Connect the voltmeter across the connector or part of the cir-
cuit you want to check. The positive lead of the voltmeter
should be closer to power and the negative lead closer to
ground.
2) Operate the circuit.
3) The voltmeter will indicate how many volts are being used to
ªpushº current through that part of the circuit.
Note in the illustration that there is an excessive 4.1 volt drop
between the battery and the bulb.
SGI974
Measuring Voltage Drop Ð Step by Step
The step by step method is most useful for isolating excessive
drops in low voltage systems (such as those in ªComputer Con-
trolled Systemsº).
Circuits in the ªComputer Controlled Systemº operate on very low
amperage.
The (Computer Controlled) system operations can be adversely
affected by any variation in resistance in the system. Such resis-
tance variation may be caused by poor connection, improper
installation, improper wire gauge or corrosion.
The step by step voltage drop test can identify a component or wire
with too much resistance.
HOW TO PERFORM EFFICIENT DIAGNOSES FOR AN ELECTRICAL INCIDENT
Circuit Inspection (Cont'd)
GI-28

A
A/C HFC134a (R134a) system precaution . HA-2
A/C HFC134a (R134a) system service
procedure .............................................. HA-78
A/C HFC134a (R134a) system service
tools ....................................................... HA-11
A/C HFC134a system service equip-
ment precaution ....................................... HA-6
A/C air flow ............................................... HA-20
A/C component layout .............................. HA-18
A/C compressor clutch removal and
installation .............................................. HA-83
A/C compressor precaution ........................ HA-5
A/C compressor special service tool .......... HA-9
A/C control linkage adjustment
(manual A/C) ......................................... HA-41
A/C control operation (manual A/C) .......... HA-19
A/C diagnostic work flow
(manual A/C) ........................................ HA-33
A/C harness layout (manual A/C) ............. HA-22
A/C lubricant (R134a) ............................... HA-80
A/C operational check ............................... HA-34
A/C performance chart .............................. HA-71
A/C performance test diagnoses .............. HA-69
A/C relay ................................................... HA-66
A/C service data specification .................. HA-97
A/C switch ................................................. HA-67
A/C, M - Wiring diagram ........................... HA-27
A/CCUT - Wiring diagram ....................... EC-830
A/T - Wiring diagram - AT - 1ST .............. AT-207
A/T - Wiring diagram - AT - 2ND ............. AT-214
A/T - Wiring diagram - AT - 3RD ............. AT-220
A/T - Wiring diagram - AT - 4TH .............. AT-227
A/T - Wiring diagram - AT - BA/FTS ....... AT-167,
276
A/T - Wiring diagram - AT - ENG SS ...... AT-173,
201
A/T - Wiring diagram - AT - FTS .............. AT-191
A/T - Wiring diagram - AT - LPSV ... AT-178, 241
A/T - Wiring diagram - AT - MAIN ........... AT-123
A/T - Wiring diagram - AT -
NONDTC .............................................. AT-292
A/T - Wiring diagram - AT -
OVRCSV ...................................... AT-155, 270
A/T - Wiring diagram - AT - PNP/SW ...... AT-185
A/T - Wiring diagram - AT - SSV/A .. AT-144, 248
A/T - Wiring diagram - AT - SSV/B .. AT-150, 254
A/T - Wiring diagram - AT - TCV ..... AT-161, 235
A/T - Wiring diagram - AT - TPS ..... AT-136, 261
A/T - Wiring diagram - AT - VSS/AT ....... AT-128,
197
A/T - Wiring diagram - AT -
VSSMTR ...................................... AT-132, 283
A/T IND - Wiring diagram ........................ EL-195
A/T control ............................................... EC-532
A/T diagnosis communication line .......... EC-434
A/T fluid temperature sensor ................... AT-194A/T shift lock system - Wiring
diagram ................................................ AT-344
A/T shift lock system ................................ AT-343
A/T trouble diagnoses .......................... AT-69, 74
AAC/V - Wiring diagram ................. EC-378, 513
ABS (anti-lock brake system) ................... BR-49
ABS - Wiring diagram ............................... BR-54
ABS sensor rotor ....................................... AX-24
APS - Wiring diagram ............................. EC-685
ATDIAG - Wiring diagram ............... EC-435, 533
Accelerator control system .................... FE-3, 19
Accelerator position sensor .................... EC-685
Air bag disposal ........................................ RS-40
Air bag precautions ...................................... GI-3
Air bag ....................................................... RS-20
Air bleeding (hydraulic clutch) ................... CL-10
Air bleeding for brake system ..................... BR-9
Air conditioner cut control ................. EC-35, 612
Air flow meter - See Mass air flow
sensor .......................................... EC-187, 673
Air mix door control linkage
adjustment ............................................. HA-43
Air spoiler, rear .......................................... BT-47
Alternator ................................................... SC-31
Angular tightening application .............. EM-4, 77
Antenna - See Power antenna ................ EL-282
Anti-lock brake system - Wiring
diagram .................................................. BR-54
Audio and A/C control removal and
installation - See Instrument panel ........ BT-25
Audio ........................................................ EL-258
Automatic transaxle number ...................... GI-41
Auxiliary air control (AAC) valve ..... EC-376, 511
B
Back-up lamp switch (M/T) ....................... MT-21
Back-up lamp ............................................. EL-87
Ball joint (front) .......................................... SU-13
Basic inspection ...................... EC-100, 128, 641
Battery ......................................................... SC-3
Baulk ring (M/T) ............................ MT-31, 55, 93
Blower motor ............................................. HA-54
Blower resistor .......................................... HA-54
Board-on lift ................................................ GI-44
Body alignment .......................................... BT-77
Brake booster ............................................ BR-20
Brake fluid change ...................................... BR-8
Brake fluid level and line check .................. BR-8
Brake hydraulic line .................................. BR-10
Brake master cylinder ............................... BR-14
Brake pedal ............................................... BR-12
Bulb specifications ................................... EL-574
Bumper, front .............................................. BT-7
Bumper, rear .............................................. BT-10
ALPHABETICAL INDEX
IDX-2