Lotus Eleven/Elise/Exige. Manual - part 50

 

 

Lotus Service Notes   

 

 

  Section EMP

Page 55

Throttle Actuator Control Module Performance              P2108

Monitor: Continuous

Enable Criteria: Engine running

Disable Criteria: None

Potential failure modes:

# ECU internal failure

# Short circuit to throttle actuator

Pedal Position Sensor 'D' Circuit Low                    P2122

Description

Two potentiometers are built into the throttle pedal  unit in order to provide a throttle demand signal to the ECU.  

Note that the potentiometers operate on 5 volts.

Enable Criteria: None

Disable Criteria: None

Potential failure modes:

# Signal short circuit (< 0.283 V)

# Reference voltage open circuit

# Reference voltage short to ground

# Sensor failure

Notes: A maximum throttle opening of 15% may be imposed due to this single code.  In the case of multiple 

codes, a mechanically sprung 7% opening may be applied.

Pedal Position Sensor 'D' Circuit High                    P2123

Enable Criteria: None

Disable Criteria: None

Potential failure modes:

# Signal open circuit (> 4.487 V)

# Reference voltage open circuit

# Reference voltage short to ground

# Sensor failure

Notes: A maximum throttle opening of 15% may be imposed due to this single code.  In the case of multiple 

codes, a mechanically sprung 7% opening may be applied.

Page 56

 

 

Lotus Service Notes   

 

 

  Section EMP

Pedal Position Sensor 'E' Circuit Low                    P2127

Description

Two potentiometers are built into the throttle pedal  unit in order to provide a throttle demand signal to the ECU.  

Note that the potentiometers operate on 5 volts.

Enable Criteria: None

Disable Criteria: None

Potential failure modes:

# Signal short circuit (< 0.283 V)

# Reference voltage open circuit

# Reference voltage short to ground

# Sensor failure

Notes: A maximum throttle opening of 15% may be imposed due to this single code.  In the case of multiple 

codes, a mechanically sprung 7% opening may be applied.

Pedal Position Sensor 'E' Circuit High                    P2128

Enable Criteria: None

Disable Criteria: None

Potential failure modes:

# Signal open circuit (> 4.487 V)

# Reference voltage open circuit

# Reference voltage short to ground

# Sensor failure

Notes: A maximum throttle opening of 15% may be imposed due to this single code.  In the case of multiple 

codes, a mechanically sprung 7% opening may be applied.

Throttle Position Sensor 'A'/'B' Voltage Correlation           P2135

Description

Two potentiometers are built into the throttle actuator unit in order to provide a throttle position signal to the 

ECU.  Two processors within the ECU compare the two output signals, which should match within a defined 

tolerance. Note that the potentiometers operate on 5 volts.

Enable Criteria: None

Disable Criteria: Throttle position greater than 60%

Potential failure modes:

# TPS1 reading incorrectly

# TPS2 reading incorrectly

Notes: A maximum throttle opening of 15% may be imposed.

 

 

Lotus Service Notes   

 

 

  Section EMP

Page 57

Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation        P2138

Description

Two potentiometers are built into the throttle pedal unit in order to provide a throttle demand signal to the ECU.  

Two processors within the ECU compare the two output signals, which should match within a defined tolerance. 

Note that the potentiometers operate on 5 volts.

Enable Criteria: None

Disable Criteria: None

Potential failure modes:

# PPS1 reading incorrectly

# PPS2 reading incorrectly

Notes: A maximum throttle opening of 15% may be imposed.

Throttle Actuator Control System – High Airflow Detected      P2173

Description

The mass air flow is compared with the throttle position to determine whether an incorrect correlation exists.

Enable Criteria: None

Disable Criteria: MAF fault(s) present

Potential failure modes:

# Throttle plate damage

# Air leak in intake system

Notes: A mechanically sprung 7% throttle opening may be imposed, or the injectors may be shut off to stop 

the engine.

Page 58

 

 

Lotus Service Notes   

 

 

  Section EMP

EMP.7 - DIAGNOSTIC CODE SUPPLEMENT - 2011 M.Y. ELISE (Euro 5)

DTC    Fault Description                                               Page

P0011 A   Camshaft Position - Timing Over-Advanced or System Performance    

P0012   A Camshaft Position - Timing Over-Retarded                  

P0014   B Camshaft Position - Timing Over-Advanced or System Performance 

P0015   B Camshaft Position - Timing Over-Retarded 

P0016   Crankshaft Position - Camshaft Position Correlation - Bank1 Sensor A

P0017   Crankshaft Position - Camshaft Position Correlation - Bank1 Sensor B

P0076  Intake Valve Control Solenoid Circuit Low                       

P0077  Intake Valve Control Solenoid Circuit High                      

P0079  Exhaust Valve Control Solenoid Circuit Low  

P0080  Exhaust Valve Control Solenoid Circuit High 

P0101  Mass or Volume Air Flow Circuit Range/Performance                    

P0102  Mass or Volume Air Flow Circuit Low Input                         

P0103  Mass or Volume Air Flow Circuit High Input                         

P0107  Manifold Absolute Pressure/Barometric Pressure Circuit Low Input           

P0108  Manifold Absolute Pressure/Barometric Pressure Circuit High Input          

P0112   Intake Air Temperature Sensor 1 Circuit Low                       

P0113   Intake Air Temperature Sensor 1 Circuit High                        

P0116   Engine Coolant Temperature Circuit Range/Performance                 

P0117   Engine Coolant Temperature Circuit Low                           

P0118   Engine Coolant Temperature Circuit High                          

P0122  Throttle Position Sensor 'A' Circuit Low                                  

P0123  Throttle Position Sensor 'A' Circuit High                                

P0131  O2 Sensor Circuit Low Voltage (Pre Catalyst)                              

P0132  O2 Sensor Circuit High Voltage (Pre Catalyst)                              

P0133  O2 Sensor Circuit Slow Response (Pre Catalyst)                            

P0134  O2 Sensor Circuit No Activity Detected (Pre Catalyst)                         

P0135  O2 Sensor Heater Circuit (Pre Catalyst)                                  

P0137  O2 Sensor Circuit Low Voltage (Post Catalyst)                              

P0138  O2 Sensor Circuit High Voltage (Post Catalyst)

P0139  O2 Sensor Circuit Slow Response (Post Catalyst)                              

P0140  O2 Sensor Circuit No Activity Detected (Post Catalyst)                       

P0141  O2 Sensor Heater Circuit (Post Catalyst)                         

P0171  System Too Lean                                        

P0172  System Too Rich                                        

P0222  Throttle Position Sensor 'B' Circuit Low 

P0223  Throttle Position Sensor 'B' Circuit High

P0261     Cylinder 1 Injector Circuit Low

P0262     Cylinder 1 Injector Circuit High

P0264     Cylinder 2 Injector Circuit Low

P0265     Cylinder 2 Injector Circuit High

P0267     Cylinder 3 Injector Circuit Low

P0268     Cylinder 3 Injector Circuit High

P0270     Cylinder 4 Injector Circuit Low

P0271     Cylinder 4 Injector Circuit High

P0300  Random/Multiple Cylinder Misfire Detected                               

P0301  Cylinder 1 Misfire Detected                                         

P0302  Cylinder 2 Misfire Detected                                         

P0303  Cylinder 3 Misfire Detected                                         

P0304  Cylinder 4 Misfire Detected                               

P0327  Knock Sensor 1 Circuit Low                                         

P0328  Knock Sensor 1 Circuit High                  

P0335  Crankshaft Position Sensor “A” Circuit Range/Performance