1997 RENAULT KANGOO battery

DIESEL EQUIPMENT
Pre-postheating control
13
The pre-postheating function is controlled by the
computer, which controls the preheating plug re-
lay housing.
1) Ignition - Preheating
The preheating process is divided in two
phases :
a) Variable preheating
This is dependent on the coolant tempera-
ture, on the battery voltage and on alti-
tude (internal computer sensor) when the
ignition is switched on (the preheating
warning light illuminates).b) Fixed preheating
After the preheating warning light has
extinguished (variable preheating), the
plugs remain fed for 8 seconds before the
engine is started.
2) Starting the engine
During the action of the starter motor, the
four plugs are fed continuously.
3) Engine running - Postheating
The postheating also may be divided in two
phases:
a) Fixed postheating
After starting the engine, the plugs are
supplied simultaneously for a period of 10
seconds.
b) Variable postheating
Variable postheating begins when fixed
postheating ends. The time during which
the plugs are fed (continuously) depends
upon :
- the coolant temperature
- the engine speed ,
- the load (load potentiometer on pump
lever ).
Maximum preheating limit (battery vol-
tage lower than 9.3 volts and altitude hi-
gher than 2 000 m).
Minimum preheating limit (battery
voltage greater than 10.5 volts altitude
lower than 350 m).
13041S
13-33

DIESEL EQUIPMENT
Pre-postheating control
13
- 20 180time (s)
For an idle speed and load lever
position
Coolant temperature °C0204060
Variable postheating may be interrupted :
- permanently, if the coolant temperature is >
60°C,
- temporarily , if the unit receives full load
information for more than 3 seconds; the
function is established once again if the
engine returns to idle speed or low load,
- temporarily again if the battery voltage is
>16 V; the function is restored if Ubatt
< 15 V.
In all cases, the total duration of the postheating
function will never exceed 3 minutes.
13-34

DIESEL EQUIPMENT
Defect modes
13
If there is a fault with one of the components listed below, the computer enters "defect mode", which means
that replacement values are used to ensure engine operation.
Faulty
componentSet values (for replacement)
Advance
corrector Pre-postheating
timeEGR function Fast idle speed AC function
Coolant sensorRunning time
functionPreheating : -
30°C
Postheating :
80°CCutRunning time
function-
Air sensorTemperature
= 22°C- Cut - -
Load
potentiometer100 % load lever
positionPostheating:
30 % load lever
position Cut - 20 % load lever
position
Altitude sensorAltitude
= 900 mAltitude
= 900 mCut - -
Battery
16 V < U < 6 VUbatt = 13.5V Not controlled - - -
TDC sensorMinimum
advance
Solenoid valve
fully open
position Postheating :
Not controlled
until ignition is
switched off
then on againCutSpeed
= 2 000 rpmSpeed
= 2 000 rpm
Needle lift
sensorDefect mode
advance
(Carto soft
F8Q 662)
Maximum
advance
(F8Q 630)----
Vehicle speed
sensor--Position :
V = 175 km/hPosition :
V = 175 km/hPosition :
V = 175 km/h
Heater plugs
relay housing- Cut - - -
13-38

DIESEL EQUIPMENT
Pump
13
REMOVAL
Disconnect the battery. Then remove :
- the suspended engine mounting housing (1),
- the injection pump pulley housing (2).
DI1302-1
Pin the engine using tool Mot. 1054. For this
operation, turn the engine so that the index of
the camshaft sprocket is in line with the marking
on the timing cover (use a mirror).
SPECIAL TOOLING REQUIRED
Mot. 1054TDC pin
Mot. 1200
Pump-pulley retaining tool
Mot. 1317
99183R
Nut mounting the pump shaft
to the RAM pulley 4.5
Pump mounting bolt 2.2
TIGHTENING TORQUES (in daN.m)
13-39

STARTING - CHARGING
Alternator
16
OPERATION - FAULT FINDING
These vehicles are equipped with alternators with
internal ventilation and integral regulator, also
with a warning light on the instrument panel
which has the following functions :
- when the ignition is switched on, the light illu-
minates
- when the engine is started the light extin-
guishes,
- if the light illuminates whilst the engine is
running there is a "charging "fault.
LOOKING FOR FAULTS
The warning light does not illuminate when the
ignition is switched on.
Check:
- all electrical connections are good.
- the bulb has not blown. (Earth the circuit and
the bulb should illuminate).
The warning light illuminates when the engine is
running.
This indicates a charging fault which could be
caused by :
- the alternator drive belt being broken or the
charging wiring being cut,
- internal alternator damage (rotor, stator,
diodes or brush),
- a regulator fault,
- excess voltage.The customer complains of a lack of charge and
the warning light is operating correctly.
If the regulated voltage is less than 13.5 V, check
the alternator. The fault could be caused by :
- a diode which has been damaged,
- a phase which is cut,
- contaminated or worn tracks.
Checking the voltage
Connect a voltmeter across the battery terminals
and read the battery voltage.
Start the engine and increase the engine speed
until the needle registers a stable regulated
voltage.
This voltage should be between 13.5 V and 14.8 V.
Connect as many consumers as possible, the
regulated voltage should be between 13.5 V and
14.8 V.
IMPORTANT: if arc welding work is to be carried
out on the vehicle, the battery and regulator
must be disconnected.
16-2

STARTING - CHARGING
Alternator
16
OPTIMA 5800 Diagnostic station
CHECKING THE CHARGING CIRCUIT USING THE DIAGNOSTIC STATION
The OPTIMA 5800 diagnostic station allows the alternator to be checked by measuring the voltage and cur-
rent delivered , with or without electrical consumers .
NOTE : the Amps clamp used for this station is of the inductive type (measurement range: 0 to 1 000 A). It
is fitted without disconnecting the battery, which allows the the computer memory and adaptive informa-
tion to be saved.
Fit the Amps clamp directly at the alternator output, with the arrow pointing towards the alternator (any in-
correct positioning is detected by the station).
The measurement is carried out in three stages :
- measurement of the battery voltage, ignition off,
- measurement of the regulated voltage and of the current supplied, without consumers,
- measurement of the regulated voltage and current supplied, with a maximum number of consumers.
On completion of the test, the values noted will lead to the following fault finding messages :
- Battery voltage, no load < 12.3 V = battery uncharged.
Without consumers :
- Regulated voltage > 14,8 V = > regulator faulty ,
- (regulated voltage, no load < 13.2 V) or (charging current< 2 A) = >charging fault.
With consumers :
- Regulated voltage > 14.8 V = > regulator faulty,
- Regulated voltage < 12.7 V = > it is necessary to check the alternator supply in relation to its specifica-
tions :
Engine
Current (amps)D7F E7J F8Q
Nominal current 70 75 75
Minimum current which the alternator must
supply, all consumers connected 53 51 55
FAULT FINDING
SPECIAL TOOLING REQUIRED
16-3

STARTING - CHARGING
Alternator
16
If the electrical supply measured is too low, check:
- the wear of the alternator (brush...),
- the battery connections,
- the engine earth strap,
- the conformity of the alternator,
- the belt tension.
If the electrical supply measured is correct and the regulated voltage is too low, the alternator is not faulty.
The cause of the problem is to be attributed to one of the following sources :
- the vehicle has too many electrical consumers,
- the battery is discharged.
FAULT FINDING (continued)
16-4

STARTING-CHARGING
Alternator
16
REMOVAL
Place the vehicle on a two post lift .
Disconnect the battery as well as all electrical
connections leading to the alternator.
Remove :
- the alternator belt and that of the power as-
sisted steering pump for the D7F engine (if
fitted),
- the alternator.
REFITTING
Refitting is the reverse of removal.
D7F Engine
Tensioning of the alternator belt is carried out
using the locally manufactured tool shown be-
low (threaded rod 100 mm in length (X) and three
M6 nuts).
D7F / E7J
Engines
SPECIAL TOOLING REQUIRED
Mot. 1273 Tool for checking belt tension
10617R
E7J Engine
Tension the belt using the bolt at (1) and tighten
the nut at (2) , having measured the tension.
13363R
See section 07 "Accessories belt tension" for the
tension values.
16-5