Page 206 of 279
17B-206
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
PR444BUILT-IN CORRECTION FOR IDLE SPEED REGULATION
PA R A M E T E R
DEFINITIONThis parameter indicates the built-in correction for idle speed regulation in N.m.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant temperature > 80°C
The built-in idle speed regulation correction is continuously calculated to take into account consumer air demand.
V42_V04_PR444/V42_V05_PR444/V42_V06_PR444/V42_V14_PR444/V42_V16_PR444/V42_V18_PR444
Page 207 of 279
17B-207
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
PR446UPSTREAM 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_PR446/V42_V05_PR446/V42_V06_PR446/V42_V14_PR446/V42_V16_PR446/V42_V18_PR446
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