Page 208 of 279
17B-208
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V2 MR-376-X76-17B050$130.mif
PETROL INJECTION
Fault finding – Interpretation of parameters17B
V42 Injection
Program No.: 2A
Vdiag No.: 04, 05, 06,
14, 16, 18
PR447DOWNSTREAM O2 SENSOR HEATING RESISTOR
PA R A M E T E R
DEFINITIONThis parameter indicates the heating resistance of the downstream oxygen sensor in
Ohms.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant temperature > 80°C
The value must be 9 at 20°C.
V42_V04_PR447/V42_V05_PR447/V42_V06_PR447/V42_V14_PR447/V42_V16_PR447/V42_V18_PR447
Page 209 of 279
17B-209V2 MR-376-X76-17B050$130.mif
PETROL INJECTION
Fault finding – Interpretation of parameters17B
V42 Injection
Program No.: 2A
Vdiag No.: 04, 05, 06,
14, 16, 18
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test, then check with the diagnostic tool.
PR448IGNITION ADVANCE
PA R A M E T E R
DEFINITIONThis parameter indicates the ignition advance in volts.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant temperature > 80°C
The value must be 0° V with the ignition on and 4 V at idle speed.
In the event of a fault, apply the interpretation of fault DF120 Engine speed sensor signal.
V42_V04_PR448/V42_V05_PR448/V42_V06_PR448/V42_V14_PR448/V42_V16_PR448/V42_V18_PR448
Page 210 of 279
17B-210V2 MR-376-X76-17B050$130.mif
PETROL INJECTION
Fault finding – Interpretation of parameters17B
V42 Injection
Program No.: 2A
Vdiag No.: 04, 05, 06,
14, 16, 18
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test, then check with the diagnostic tool.
PR538MEASURED THROTTLE VOLTAGE, GANG 2
PA R A M E T E R
DEFINITIONThis parameter indicates the throttle valve gang 2 voltage measured in volts.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant temperature
>80°C
The value must be 0.60 V.
In the event of a fault, apply the interpretation of fault DF096 Throttle potentiometer circuit gang 2.
V42_V04_PR538/V42_V05_PR538/V42_V06_PR538/V42_V14_PR538/V42_V16_PR538/V42_V18_PR538
Page 211 of 279
17B-211
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V2 MR-376-X76-17B050$130.mif
PETROL INJECTION
Fault finding – Interpretation of parameters17B
V42 Injection
Program No.: 2A
Vdiag No.: 04, 05, 06,
14, 16, 18
PR539THROTTLE VALVE GANG 1 MEASURE VOLTAGE
PA R A M E T E R
DEFINITIONThis parameter indicates the throttle valve voltage, gang 1 measured in volts.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant temperature > 80°C
The value must be 0.35 V.
In the event of a fault, apply the interpretation of fault DF095 Throttle potentiometer circuit gang 1.
V42_V04_PR539/V42_V05_PR539/V42_V06_PR539/V42_V14_PR539/V42_V16_PR539/V42_V18_PR539
Page 212 of 279
17B-212
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V2 MR-376-X76-17B050$130.mif
PETROL INJECTION
Fault finding – Interpretation of parameters17B
V42 Injection
Program No.: 2A
Vdiag No.: 04, 05, 06,
14, 16, 18
PR814NUMBER OF ACTIVE HEATING RESISTORS
PA R A M E T E R
DEFINITIONThis parameter indicates the number of active heating resistors and can be between 0
to 5 depending on the relays activated.
0 if no relay is active
1 if relay 1 is active
2 if relay 2 is active
3 if relays 1 and 2 are active
4 if relays 2 and 3 are active
5 if all of the relays are active
Conformity check: Engine stopped and ignition on, or engine running, and engine coolant temperature < 80°C
In the event of a fault, consult the interpretation of faults:
DF992 Additional heater relay 1 circuit,
DF993 Additional heater relay 2 circuit,
DF994 Additional heater relay 3 circuit.
V42_V04_PR814/V42_V05_PR814/V42_V06_PR814/V42_V14_PR814/V42_V16_PR814/V42_V18_PR814
Page 215 of 279
17B-215V2 MR-376-X76-17B050$150.mif
17B
V42 Injection
Program No.: 2A
Vdiag No.: 04, 05, 06,
14, 16, 18
NOTESSpecial note:
Only address this customer complaint after a complete check with the diagnostic
tool.
NO COMMUNICATION WITH THE COMPUTER ALP1
GENERAL APPEARANCE OF ENGINE COMPARTMENT ALP2
APPEARANCE AND MOUNTING OF THE EXHAUST ALP3
LEAK FROM THE ENGINE
FUEL LEAKALP4
ENGINE OIL LEAKALP5
COOLANT LEAKALP6
ODOURS UNDER BONNET
UNUSUAL ODOURALP7
FUEL ODOURALP8
PETROL INJECTION
Fault finding – Customer complaints
Page 217 of 279
17B-217V2 MR-376-X76-17B050$150.mif
PETROL INJECTION
Fault finding – Customer complaints17B
V42 Injection
Program No.: 2A
Vdiag No.: 04, 05, 06,
14, 16, 18
EXCESSIVE CONSUMPTION
EXCESSIVE FUEL CONSUMPTION ALP 13
EXCESSIVE COOLANT CONSUMPTION ALP14
EXCESSIVE OIL CONSUMPTION ALP15
ENGINE STARTING
IMPOSSIBLE TO START THE ENGINE ALP16
ENGINE STALLS WHEN COLD ALP17
THE ENGINE STARTS WITH DIFFICULTY ALP18
PERFORMANCE
LACK OF POWER OR TORQUE ALP19
ACCELERATION GAP ALP20
Page 221 of 279
17B-221
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V2 MR-376-X76-17B050$160.mif
PETROL INJECTION
Fault finding – Fault Finding Chart17B
V42 Injection
Program No.: 2A
Vdiag No.: 04, 05, 06,
14, 16, 18
ALP 2 General appearance of engine compartment
Check the fan assembly
Check the air filter unit.
Check the inlet manifold air pressure sensor by running TEST 7 Air inlet pressure sensor check.
Check the air pipes.
Check the coolant temperature sensor by running TEST 15 Coolant temperature sensor check.
Check the injector rail.
Check the inlet manifold.
Check the oil filter.
Check the catalytic converter.
Check the exhaust manifold.
Check the accessories belt.
Check the dipstick.
If the fault is still present, contact the techline.
V42_V04_ALP2/V42_V05_ALP2/V42_V06_ALP2/V42_V14_ALP2/V42_V16_ALP2/V42_V18_ALP2