PETROL INJECTION
Fault finding – System operation17B
17B - 7V12 MR-372-J84-17B000$090.mif
SAGEM 3000
Program No.: A7
Vdiag No.: 44, 48PETROL INJECTION
Fault finding – System operation
1. SYSTEM OPERATION
Composition
The injection system consists of the:
– accelerator potentiometer,
– accelerator pedal switch,
– TDC sensor,
– atmospheric pressure sensor,
– air temperature sensor,
– coolant temperature sensor,
– freon pressure sensor,
– upstream oxygen sensor,
– downstream oxygen sensor,
– cruise control switch,
– steering column switch,
– cruise control on/off switch,
– brake lights switch,
– fuel vapour absorber,
– injection computer,
– motorised throttle valve,
– four injectors,
– four pencil coils,
– + turbocharging pressure sensor,
– coolant pump
– turbocharging solenoid valve.
Computer
SAGEM S3000 flash EEPROM 128-track computer controlling the injection and the ignition.
Multipoint injection in sequential mode.
Connections to the other computers:
– Protection and Switching Unit (UPC)
– Passenger Compartment Control Unit (UCH),
– Automatic Transmission Electronic Control Unit (AUTO ECU).
JSAA741.0
MR-372-J84-17B000$090.mif
PETROL INJECTION
Fault finding – Fault summary table17B
17B - 19V12 MR-372-J84-17B000$270.mif
SAGEM 3000
Program No.: A7
Vdiag No.: 44, 48
*AT: Automatic Transmission
*BVR: Sequential gearboxTool
faultsHexadecimal
DTC codesDescriptionLevel 1 fault
warning lightNo warning
light onOBD warning
light
DF0840685Actuator relay control
circuit1.DEF
DF0850627Fuel pump relay control
circuitCO/ CC.0
CC.1
DF0862600Coolant pump control
circuitCO/ CO.0
CC.1
DF0880325 Pinking sensor circuit 1.DEF
DF0890105Inlet manifold pressure
sensor circuit1.DEF
2.DEF
DF0910500 Vehicle speed signal 1.DEF
DF0920130Upstream oxygen
sensor circuitCO.0
CC.1
1.DEF
DF0930136Downstream oxygen
sensor circuitCO.0/CC.1
DF0950120Throttle potentiometer
circuit gang 1CO.0/CC.1
1.DEF
DF0960220Throttle potentiometer
circuit gang 2CO.1/CC.0
DF099C101TA* or BVR*
connection via the
multiplex network1.DEF
DF100C155Instrument panel
multiplex connection1.DEF
DF101C122Multiplex ESP
connection1.DEF
DF1050585Cruise control/speed
limiter on/off circuit1.DEF
DF1060575Cruise Control/Speed
Limiter function selector
on steering wheel1.DEF
DF108C115LPG/CNG computer
multiplex connection1.DEF
JSAA741.0
PETROL INJECTION
Fault finding – Interpretation of faults17B
17B-71V12 MR-372-J84-17B000$360.mif
SAGEM 3000
Program No.: A7
Vdiag No.: 44, 48
DF106
PRESENT
OR
STOREDCRUISE CONTROL/SPEED LIMITER SELECTOR SWITCH ON
STEERING WHEEL
1.DEF : inconsistent data
IMPORTANT
To remove or check the Cruise control/speed limiter control switches, the airbag must be removed
(see MR 364, Mechanical, 88C, Airbag and pretensioners).
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is present after a road test using the cruise control then the speed limiter
function.
Check the cleanliness and condition of the incrementing switches on the steering wheel and their connections.
Repair if necessary.
Check that the earth is present on track 2 of the incrementing switches on the steering wheel.
Repair if necessary.
Disconnect the battery.
Disconnect the computer. Check the cleanliness and condition of the connections.
Using the Universal bornier, check the insulation and continuity of the following connections:
Computer, connector A, track D2 Track 2 of the steering wheel control switch
Computer, connector A, track D3 Track 1 of the steering wheel control switch
Repair if necessary.
If the fault is still present, deal with the other faults then proceed to the conformity check.
AFTER REPAIRDeal with any faults declared by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
JSAA741.0
PETROL INJECTION
Fault finding – Conformity check17B
17B-93V12 MR-372-J84-17B000$450.mif
SAGEM 3000
Program No.: A7
Vdiag No.: 44, 48
FUEL CIRCUIT SUB-FUNCTION (continued 1)
Order FunctionParameter or Status
Checked or ActionDisplay and notes Fault finding
5
Motorised
throttlePR090: Idle speed
regulation
programming
value- 12% < PR090 < 12%
PR090, an adaptive built-in action, is
a stored parameter designed to
program variation and engine ageing
for the idle speed regulator. These
are programmed only when the
engine is idling and warm, and no
electrical consumers (electrical
windscreen, air conditioning, GMV,
power steering) have been selected.
Therefore it adjusts slowly.
WITHOUT
6 PR141: Integral idling
speed
regulation
correction0%
The built-in correction is
continuously calculated to take into
account consumer air demand.
7 Motorised
throttlePR091: Theoretical
idle speed
regulation
OCR0% < PR091 < 100%
When the conditions for regulation
are met, the idle regulator continually
repositions the motorised throttle to
keep the engine speed at the idling
speed setting. The motorised throttle
opening ratio required to adhere to
the engine speed setpoint is then
given by parameter PR091.
JSAA741.0
PETROL INJECTION
Fault finding – Conformity check17B
17B-114V12 MR-372-J84-17B000$450.mif
SAGEM 3000
Program No.: A7
Vdiag No.: 44, 48
FUEL CIRCUIT SUB-FUNCTION (continued 1)
Order FunctionParameter or Status
Checked or ActionDisplay and notes Fault finding
5
Motorised
throttlePR090: Idle speed
regulation
programming
value- 12% < PR090 < 12%
PR090, an adaptive built-in action, is
a stored parameter designed to
program variation and engine ageing
for the idle speed regulator. These
are programmed only when the
engine is idling and warm, and no
electrical consumers (electrical
windscreen, air conditioning, GMV,
power steering) have been selected.
Therefore it adjusts slowly.
WITHOUT
6 PR141: Integral idling
speed
regulation
correction4.7% < PR141 < 32%
The built-in correction is
continuously calculated to take into
account consumer demand for air.
7 Motorised
throttlePR091: Theoretical idle
speed
regulation OCR5% < PR091 < 50%
When the conditions for regulation
are met, the idle regulator continually
repositions the motorised throttle to
keep the engine speed at the idling
speed setting. The motorised throttle
opening ratio required to adhere to
the engine speed setpoint is then
given by parameter PR091.
JSAA741.0
PETROL INJECTION
Fault finding – Interpretation of statuses17B
17B - 135V12 MR-372-J84-17B000$540.mif
SAGEM 3000
Program No.: A7
Vdiag No.: 44, 48PETROL INJECTION
Fault finding – Interpretation of statuses
ET042
CONTINUED 1
INACTIVEWhen the main switch is in rest position (or neutral), status ET042 is INACTIVE.
If CRUISE CONTROL or SPEED LIMITER appears despite the main button being in the
rest (or neutral) position, carry out the following operations:
Check the connections on the steering column top control module.
Check for +12 V APC on track 9 of the steering column top control module
connector.
Disconnect the top steering column control module connector and with the switch in
the rest position, check the insulation between tracks 9 and 6 and between tracks 9
and 12.
Check the continuity of the top steering column control module connector between
tracks 9 and 6, with the switch in the speed limiter position.
Check the continuity of the steering column top control module connector on
tracks 9 and 12, with the control in the cruise control position.
If the these checks do not produce the correct results, replace the steering column top
control module.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
JSAA741.0
PETROL INJECTION
Fault finding – Interpretation of statuses17B
17B - 136V12 MR-372-J84-17B000$540.mif
SAGEM 3000
Program No.: A7
Vdiag No.: 44, 48PETROL INJECTION
Fault finding – Interpretation of statuses
ET042
CONTINUED 2
SPEED LIMITERWhen the driver presses the main switch in the speed limiter position, status ET042
becomes SPEED LIMITER.
If CRUISE CONTROL or INACTIVE appears although the switch was pressed in the
speed limiter position, carry out the following operations:
Check the connections on the steering column top control module.
Check for + 12 V APC on track 9 of the steering column top control module connector.
Disconnect the top steering column control module connector and with the switch in
the rest position, check the insulation between tracks 9 and 6 and between tracks 9
and 12.
Check the continuity of the top steering column control module connector between
tracks 9 and 6, with the switch in the speed limiter position.
Check the continuity of the steering column top control module connector on
tracks 9 and 12, with the control in the cruise control position.
If the these checks do not produce the correct results, replace the steering column top
control module.
Check the insulation, continuity and absence of interference resistance on the
following connections:
Steering column top
control module,
white connector track 12
Steering column top
control module,
white connector track 6Injection computer, black connector
track A2
Injection computer, black connector
track C3
Check the engine management computer connections.
Repair if necessary.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition and carry out a road test followed by a check with the diagnostic
tool.
JSAA741.0
PETROL INJECTION
Fault finding – Interpretation of statuses17B
17B - 137V12 MR-372-J84-17B000$540.mif
SAGEM 3000
Program No.: A7
Vdiag No.: 44, 48PETROL INJECTION
ET042
CONTINUED 3
CRUISE CONTROLWhen the driver presses the main switch in the speed limiter position, status ET042
becomes SPEED LIMITER.
If CRUISE CONTROL or INACTIVE appears although the switch was pressed in the
speed limiter position, carry out the following operations:
Check the connections on the steering column top control module.
Check for + 12 V APC on track 9 of the steering column top control module connector.
Disconnect the top steering column control module connector and with the switch in
the rest position, check the insulation between tracks 9 and 6 and between tracks 9
and 12.
Check the continuity of the top steering column control module connector between
tracks 9 and 6, with the switch in the speed limiter position.
Check the continuity of the steering column top control module connector on
tracks 9 and 12, with the control in the cruise control position.
If the these checks do not produce the correct results, replace the steering column top
control module.
Check the insulation, continuity and absence of interference resistance on the
following connections:
Steering column top
control module,
white connector track 12
Steering column top
control module,
white connector track 6Injection computer, black connector
track A2
Injection computer, black connector
track C3
Also check the engine management computer connectors.
Repair if necessary.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.