Toyota Tundra (2015 year). Manual — part 2653
Last Modified: 9-16-2014
6.6 G
Doc ID: RM0000017VF04MX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 1UR-FE CHARGING: CHARGING SYSTEM: ON-VEHICLE INSPECTION; 2015 MY Tundra [08/2014 - ]
ON-VEHICLE INSPECTION
1. CHECK BATTERY CONDITION
NOTICE:
If the battery is weak or if the engine is difficult to start, perform the following procedures.
(a) Check the battery for damage and deformation. If severe damage, deformation or leakage is found,
replace the battery.
If the electrolyte quantity is below the lower line, replace the battery.
If the electrolyte quantity is above the lower line, check the battery voltage when cranking the
engine. If the voltage is below 9.6 V, recharge or replace the battery.
HINT:
Before checking the battery voltage, turn off all the electrical systems (headlights,
blower motor, rear defogger, etc.).
(2) For non-maintenance-free batteries:
If the electrolyte quantity is below the lower line, add distilled water to each cell. Then,
recharge the battery and check the electrolyte's specific gravity.
Standard specific gravity:
1.25 to 1.29 at 20°C (68°F)
If the electrolyte quantity is above the lower line, check the battery voltage when cranking the
engine. If the voltage is below 9.6 V, recharge or replace the battery.
HINT:
Before checking the battery voltage, turn off all the electrical systems (headlights,
blower motor, rear defogger, etc.).
(c) Turn the ignition switch off and turn on the headlight for 20 to 30 seconds. This will remove the surface
charge from the battery.
(d) Measure the battery voltage between the negative (-) and
12.5 to 12.9 V at 20°C (68°F)
If the voltage is below the specification, recharge the battery.
2. INSPECT BATTERY TERMINAL AND FUSE
(a) Visually check the battery terminals.
(1) Check that the battery terminals are not loose or corroded.
1UR-FE CHARGING: CHARGING SYSTEM: ON-VEHICLE INSPEC...
Torque:
Positive (+) battery terminal -
5.9 N·m {60 kgf·cm, 52in·lbf}
Negative (-) battery terminal -
5.9 N·m {60 kgf·cm, 52in·lbf}
(b) Check the H-fuse and fuses.
(1) Measure the resistance according to the value(s) in the table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
ALT H-fuse
Always
Below 1 Ω
ALT-S fuse
MET fuse
LH-IG fuse
If the result is not as specified, replace the fuse as necessary.
3. INSPECT FAN AND GENERATOR V BELT
4. INSPECT GENERATOR WIRING
(a) Visually check the generator wiring.
(1) Check that the wiring is in good condition.
5. CHECK FOR ABNORMAL NOISES
(a) Listen for abnormal noises from the generator.
(1) Check that no abnormal noises are heard from the generator while the engine is running.
6. INSPECT CHARGE WARNING LIGHT CIRCUIT
(a) Turn the ignition switch to ON. Check that the charge warning light comes on.
(b) Start the engine and check that the light goes off.
If the light does not operate as specified, troubleshoot the charge warning light circuit.
7. INSPECT CHARGING CIRCUIT WITHOUT LOAD
(a) Connect a voltmeter and ammeter to the charging circuit as
follows.
(1) Keep the engine speed at 2000 rpm and check the reading on
1UR-FE CHARGING: CHARGING SYSTEM: ON-VEHICLE INSPEC...
the ammeter and voltmeter.
Standard current:
10 A or less
Standard voltage:
13.2 to 14.8 V
If the voltmeter reading is higher than the standard voltage,
replace the voltage regulator.
HINT:
If the battery is not fully charged, the ammeter reading will
sometimes be higher than the standard current.
8. INSPECT CHARGING CIRCUIT WITH LOAD
(a) With the engine running at 2000 rpm, turn the high beam headlights ON and turn the heater blower switch
to the "HI" position.
(b) Check the reading on the ammeter.
Standard current:
30 A or higher
If the ammeter reading is below the standard current, repair the generator.
HINT:
If the battery is fully charged, the indication will sometimes be below the standard current. If this is the
case, add more electrical load (operate the wipers, rear window defogger, etc.) and check the reading on
the ammeter again.
1UR-FE CHARGING: CHARGING SYSTEM: ON-VEHICLE INSPEC...
Last Modified: 9-16-2014
6.6 K
Doc ID: RM000002BSG02QX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 1UR-FE CHARGING: GENERATOR: COMPONENTS; 2015 MY Tundra [08/2014 - ]
COMPONENTS
ILLUSTRATION
1UR-FE CHARGING: GENERATOR: COMPONENTS; 2015 MY Tundra...
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