Toyota Tundra (2015 year). Manual — part 2658
Last Modified: 9-16-2014
6.6 U
Doc ID: RM00000322D020X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FBE CHARGING: CHARGING SYSTEM: SYSTEM DIAGRAM; 2015 MY Tundra [08/2014 - ]
SYSTEM DIAGRAM
3UR-FBE CHARGING: CHARGING SYSTEM: SYSTEM DIAGRAM; ...
Last Modified: 9-16-2014
6.6 G
Doc ID: RM0000017VF04NX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FBE 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 above the lower line, check the battery voltage when cranking the
engine. If the voltage is less than 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.
(e) Reference:
The indicator shows the battery condition.
HINT:
Blue: OK
White: Charging necessary
Red: Insufficient electrolyte
2. INSPECT BATTERY TERMINAL AND FUSE
(a) Visually check the battery terminals.
(1) Check that the battery terminals are not loose or corroded.
Torque:
Positive (+) battery terminal -
5.9 N·m {60 kgf·cm, 52in·lbf}
3UR-FBE CHARGING: CHARGING SYSTEM: ON-VEHICLE INSPEC...
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 fuses as necessary.
3. INSPECT FAN AND GENERATOR V BELT
generator V belt.
The belt is cracked.
The belt is worn out to the extent that the cords are
exposed.
The belt has chunks missing from the ribs.
(b) Check that the belt fits properly in the ribbed grooves.
HINT:
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.
3UR-FBE CHARGING: CHARGING SYSTEM: ON-VEHICLE INSPEC...
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
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 amperage.
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 less than the standard amperage, repair the generator.
HINT:
If the battery is fully charged, the indication will sometimes be less than the standard amperage. If this is
the case, add more electrical load (operate the wipers, rear window defogger, etc.) and check the reading
on the ammeter again.
3UR-FBE CHARGING: CHARGING SYSTEM: ON-VEHICLE INSPEC...
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