RM38T0EC _57 Power Source / Network _145000 M20F-FXS, M20G-FXS BATTERY / CHARGING _0605077 CHARGING SYSTEM G

M20F-FXS, M20G-FXS BATTERY / CHARGING  CHARGING SYSTEM  ON-VEHICLE INSPECTION  


CAUTION / NOTICE / HINT

PROCEDURE

Hide 1.CHECK AUXILIARY BATTERY

a.

Check that the auxiliary battery cables are connected to the correct terminals.

If they are not, connect them properly.


b.

Check the auxiliary battery for damage and deformation. If severe damage, deformation or leakage is found, replace the auxiliary battery.


c.

Check the electrolyte level in each cell.

i.

If the electrolyte level is below the lower line, add distilled water to each cell. Then, recharge the auxiliary battery and check the electrolyte specific gravity.

Standard Specific Gravity:

1.25 or higher at 20°C (68°F)



ii.

If the electrolyte level is above the lower line, check the auxiliary battery voltage when cranking the engine. If the auxiliary battery voltage is less than 11 V, recharge or replace the auxiliary battery.

HINT:

Before checking the auxiliary battery voltage, turn off all the electrical systems (headlights, blower motor, rear window defogger, etc.).




Hide 2.CHECK AUXILIARY BATTERY VOLTAGE

a.

Turn the ignition switch off and turn on the high beam headlights for 30 seconds. This will remove the surface charge from the auxiliary battery.


b.

Measure the auxiliary battery voltage according to the value(s) in the table below.

Result:
Tester Connection Condition Specified Condition Result
Positive (+) auxiliary battery terminal - Negative (-) auxiliary battery terminal 20°C (68°F), Ignition switch off 12.0 V or higher Auxiliary battery is OK
Less than 12.0 V Recharge auxiliary battery



Hide 3.RECHARGE AUXILIARY BATTERY

a.

Recharge the auxiliary battery.

HINT:
·

Recharge the auxiliary battery according to the charger's instructions.

·

Apply the appropriate charging current according to the type of auxiliary battery shown in the table below.


Charge Method Charging Current
Normal Below 5 A
Quick Below 15 A



b.

Turn the ignition switch off and turn on the high beam headlights for 30 seconds. This will remove the surface charge from the auxiliary battery.


c.

Measure the auxiliary battery voltage according to the value(s) in the table below.

Result:
Tester Connection Condition Specified Condition Result
Positive (+) auxiliary battery terminal - Negative (-) auxiliary battery terminal 20°C (68°F), Ignition switch off 12.0 V or higher Auxiliary battery is OK
Less than 12.0 V Recharge auxiliary battery



Hide 4.CHECK AUXILIARY BATTERY TERMINAL, FUSIBLE LINK AND FUSE

a.
A520287C01
1.052,0.677 1.188,1.021 true 1.771,0.479 2.01,0.625 true 1.552,0.365 1.771,0.573 0.219,0.208 10 true *a 0.844,0.552 1.052,0.75 0.208,0.198 10 true *b
*a Positive (+) Auxiliary Battery Terminal
*b Negative (-) Auxiliary Battery Terminal


Check that the auxiliary battery terminals are not loose or corroded.

Torque:
Positive (+) Auxiliary Battery Terminal : 5.6 N*m (57 kgf*cm, 50 in.*lbf)
Negative (-) Auxiliary Battery Terminal : 5.4 N*m (55 kgf*cm, 48 in.*lbf)

If a terminal is loose or corroded, tighten or clean the terminal.


b.

Measure the resistance of each fusible link and fuse for the auxiliary battery charging system.

Standard Resistance:

Below 1 Ω


If the result is not as specified, replace the fusible link or fuse as necessary.


Hide 5.CHECK AMD TERMINAL

CAUTION:
·
A340386

This vehicle contains high voltage circuits standardized with orange colored wiring and connectors, so follow the instructions in this manual to perform the procedures correctly.

Click hereGeneral>INTRODUCTION>REPAIR INSTRUCTION>PRECAUTION

·

If the correct procedures are not followed according to the instructions in this manual, there is a danger of electric shock from the high voltage circuits.


·
A340358

Be sure to wear insulating gloves when working on high voltage wiring or components.

·

If work is performed without wearing insulating gloves, there is a danger of electric shock.



a.

Remove the service plug grip.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>SERVICE PLUG GRIP>REMOVAL


b.

Check that the AMD terminal is connected securely, and there is no contact problem.

If there are any arc marks, replace the affected parts.


c.
C464234C01
1.26,0.615 1.021,0.906 true 2.688,0.615 2.875,0.365 true 1.26,0.479 1.448,0.688 0.188,0.208 10 true *a 2.865,0.229 3.052,0.448 0.188,0.219 10 true *b
*a Inverter with Converter Assembly Side
*b No. 1 Engine Room Relay Block Side


Check that the nut for the AMD terminal is tightened to the specified torque.

Torque:
Inverter with Converter Assembly Side : 16 N*m (163 kgf*cm, 12 ft.*lbf)
No. 1 Engine Room Relay Block Side : 8.4 N*m (86 kgf*cm, 74 in.*lbf)

If there are no arc marks and the AMD terminal connection is faulty, connect the AMD terminal securely.


d.

Install the service plug grip.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>SERVICE PLUG GRIP>INSTALLATION


Hide 6.CHECK DC/DC CONVERTER FUNCTION

a.
A111747C26
0.813,1.323 1.104,1.615 true 1.469,0.906 1.229,1.167 true 1.177,1.542 1.365,1.698 0.188,0.156 10 false *a 1.5,0.771 1.698,0.917 0.198,0.146 10 false *b
*a Probe Direction
*b Current Flowing into Auxiliary Battery


Connect the AC/DC 400 A probe to the positive (+) auxiliary battery cable.


b.

Turn the ignition switch to ON (READY) and leave the vehicle as is until the electric current flowing to the auxiliary battery becomes 10 A or less.


c.

Turn on the high beam headlights, and turn the blower motor switch to the HI position and the rear window defogger on.


d.
A314451C06
0.781,1.719 1.198,1.302 true 0.802,0.927 1.219,0.51 true 1.25,0.375 1.563,0.531 0.313,0.156 10 false *a 0.625,1.646 0.938,1.802 0.313,0.156 10 false *b
*a Probe Direction
*b Current Flowing from Auxiliary Battery


Measure the current and voltage according to the value(s) in the table below.

Result:
Item Tester Connection Condition Specified Condition
Current flowing from auxiliary battery Positive (+) auxiliary battery cable Ignition switch ON (READY)
(The high beam headlights are on, the blower motor switch is in the HI position, and the rear window defogger is turned on.) 		0 A or less
(No current from auxiliary battery)
Auxiliary battery voltage Positive (+) auxiliary battery terminal - Negative (-) auxiliary battery terminal 12.5 to 15 V


If the result is not as specified, replace the inverter with converter assembly.