Lexus Car ES, IS, LS 1998-06

4.7L V8 VIN N Auto 5

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Trouble Code: P0573



Brake Switch No. 1 Stuck High/Off

Possible Causes:



BS No. 2 signal open or shorted to ground
 
BS No. 1 signal shorted to ground or to voltage
 
Ground circuit is open
 
Fused ignition switch output is open
 
Stop lamp switch is damaged or has failed
 
PCM has failed
 

Trouble Code: P0579



Speed Control Switch No. 1 Performance

Possible Causes:



S/C switch signal circuit is shorted to chassis or Sensor ground
 
S/C switch signal circuit is open or shorted to system power
 
S/C switch is damaged or it has failed
 
Sensor ground circuit is open
 
PCM has failed
 

Trouble Code: P0580



Speed Control Switch No. 1 Circuit Low Input

Possible Causes:



Intermittent condition
 
S/C switch signal circuit is shorted to chassis or Sensor ground
 
S/C On/Off switch is damaged or it has failed
 
S/C Resume/Accel switch is damaged or it has failed
 
PCM has failed.
 

Trouble Code: P0581



Speed Control Switch No. 1 Circuit High Input

Possible Causes:



S/C switch No.1 signal circuit is shorted to system power (B+)
 
S/C switch ground circuit is open
 
S/C switch signal circuit is open between PCM and clockspring
 
S/C Sensor ground circuit is open between PCM and clockspring or clockspring and S/C switch
 
Clockspring has failed
 
S/C switch (one or more) is damaged or has failed
 
PCM has failed
 

Trouble Code: P0582



Speed Control Vacuum Solenoid Circuit Malfunction

Possible Causes:



S/C supply circuit is open or is short to ground or to battery voltage
 
S/C vacuum solenoid control circuit is open
 
S/C vacuum solenoid control circuit is shorted to ground
 
S/C vacuum solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P0586



Speed Control Vent Solenoid Circuit Malfunction

Possible Causes:



S/C supply circuit is open or is short to ground
 
S/C vent solenoid control circuit is open
 
S/C vent solenoid control circuit is shorted to ground
 
S/C vent solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P0591



Speed Control Switch No. 2 Malfunction

Possible Causes:



S/C switch No. 2 signal circuit is open or is shorted to ground or to battery voltage
 
S/C return circuit is open
 
S/C switch No. 2 signal circuit is shorted to switch return circuit
 
S/C switch No. 2 has failed
 
Clockspring has failed
 
PCM has failed
 

Trouble Code: P0592



Speed Control Switch No. 2 Circuit Low

Possible Causes:



S/C switch No. 2 signal circuit is shorted to ground or to switch return circuit
 
S/C switch No. 2 has failed
 
Clockspring has failed
 
PCM has failed
 

Trouble Code: P0593



Speed Control Switch No. 2 Circuit High

Possible Causes:



S/C switch No. 2 signal circuit shorted to voltage or open between PCM and clockspring
 
S/C switch No. 2 signal circuit is open between the clockspring and S/C switch
 
S/C switch return circuit is open between PCM and clockspring or S/C switch
 
S/C switch No. 2 or clockspring has failed
 
PCM has failed
 

Trouble Code: P0594



Speed Control Servo Power Circuit Malfunction

Possible Causes:



S/C solenoid or vent solenoid has failed
 
Brake switch is damaged or it has failed
 
S/C brake switch circuit is open or it is shorted to ground
 
S/C power circuit is open or it is shorted to ground
 
PCM has failed
 

Trouble Code: P0600



PCM Internal Failure, No SPI Communications

Possible Causes:



Turn the key off. Remove the PCM connector(s) and inspect the wiring harness connector pins and PCM pins for damaged, bent or missing pins. If any problems are located, make the repair and then perform the PCM Reset function. If this code resets after the repairs are made, the PCM has failed.
 
PCM needs to be replaced, and then reprogrammed
 

Trouble Code: P0601



PCM Random Access Memory Failure, Self-Test Failed

Possible Causes:



PCM needs to be replaced, and then reprogrammed
 

Trouble Code: P0604



TCM Random Access Memory Failure, Self-Test Failed

Possible Causes:



TCM needs to be replaced, and then reprogrammed
 

Trouble Code: P0605



TCM Random Access Memory Failure, Self-Test Failed

Possible Causes:



TCM needs to be replaced, and then reprogrammed
 

Trouble Code: P0606



Engine Control Module Processor Malfunction

Possible Causes:



PCM has failed
 

Trouble Code: P0060



Engine Temperature Control A-D Ground Malfunction

Possible Causes:



PCM need to be reprogrammed
 
PCM has failed
 

Trouble Code: P0061



Engine Temperature Control Level 2 RPM Performance

Possible Causes:



PCM need to be reprogrammed
 
PCM has failed
 

Trouble Code: P0622



Generator Field Control Circuit Malfunction

Possible Causes:



Generator field control circuit is open or is shorted to ground
 
Generator field control circuit is shorted to system power (B+)
 
Generator field ground circuit is open
 
Generator is damaged or PCM has failed
 
PCM has failed
 

Trouble Code: P0627



Fuel Pump Relay Control Circuit Malfunction

Possible Causes:



Fuel pump relay control circuit is open or is shorted to ground
 
Fuel pump relay control circuit is shorted to system power (B+)
 
Fuel pump relay power circuit (fused ignition) circuit is open
 
Fuel pump relay is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0062



Engine Temperature Control Level 2 MPH Performance

Possible Causes:



PCM need to be reprogrammed
 
PCM has failed
 

Trouble Code: P0628



Fuel Pump Relay Control Circuit Malfunction

Possible Causes:



Fuel pump relay circuit is open, shorted to ground or to power
 
Fuel pump relay power circuit (fused ignition) circuit is open
 
Fuel pump relay is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0630



VIN Not Programmed Into The PCM

Possible Causes:



Reprogram the correct VIN into the PCM
 
PCM has failed
 

Trouble Code: P0632



Odometer Not Programmed Into The PCM

Possible Causes:



Reprogram the correct mileage into the PCM
 
PCM has failed
 

Trouble Code: P0633



SKIM Key Not Programmed Into The PCM

Possible Causes:



Reprogram the SKIM key into the PCM
 
PCM has failed
 

Trouble Code: P0642



Sensor Reference Voltage 1 Circuit Low

Possible Causes:



Primary 5v supply shorted to ground
 
Sensor is shorted to ground
 
5v Sensor has failed
 
PCM has failed
 

Trouble Code: P0643



Sensor Reference Voltage 1 Circuit High

Possible Causes:



Primary 5v supply shorted to battery voltage
 
PCM has failed
 

Trouble Code: P0645



A/C Clutch Relay Circuit Malfunction

Possible Causes:



Internally fused ignition switch output circuit is faulty
 
A/C relay clutch control circuit is open or it is shorted to ground
 
A/C relay clutch power supply (fused ignition) circuit is open
 
A/C relay is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0652



Sensor Reference Voltage 2 Circuit Low

Possible Causes:



Auxiliary 5v supply shorted to ground
 
Sensor is shorted to ground
 
CMP Sensor has failed
 
PCM has failed
 

Trouble Code: P0653



Sensor Reference Voltage 2 Circuit High

Possible Causes:



Auxiliary 5v supply shorted to battery voltage
 
PCM has failed
 

Trouble Code: P0660



Manifold Tune Valve Solenoid Circuit Malfunction

Possible Causes:



Fused B+ circuit has failed
 
MTV solenoid/relay circuit is open or it is shorted to ground
 
MTV solenoid/relay circuit is shorted to power
 
MTV solenoid/relay ground circuit is open
 
MTV solenoid/relay is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0685



ASD Relay Control Circuit Malfunction

Possible Causes:



Fused B+ circuit faults
 
ASD relay connector is damaged, loose or shorted
 
ASD relay control circuit is open or it is shorted to ground
 
ASD power supply (fused B+) circuit is open
 
ASD relay is damaged, has high resistance, or it has failed
 
PCM has failed
 

Trouble Code: P0688



ASD Relay Sense Circuit Low

Possible Causes:



ASD relay output circuit is open
 
ASD power supply (fused B+) circuit is open
 
ASD relay is damaged or it has failed
 
Problem in fuse/relay center
 
PCM no start condition
 
PCM has failed
 

Trouble Code: P0700



Automatic Transmission Control System Malfunction

Possible Causes:



The presence of this code means the TCM detected a problem
 
TCM related Sensor has solenoid is damaged or has failed
 
This code is for information only - check for other TCM codes
 
TCM or PCM has failed
 

Trouble Code: P0703



A/T Brake Switch Sense Circuit Malfunction

Possible Causes:



Brake switch signal circuit or the switch ground circuit is open
 
Brake switch is damaged, out of adjustment or has failed
 
PCM has failed
 

Trouble Code: P0705



A/T Check Shifter Signal Circuit Malfunction

Possible Causes:



TR1, T3, T41 or T42 sense circuit is open
 
TR1, T3, T41 or T42 sense circuit is shorted to ground
 
TR1, T3, T41 or T42 Sensor circuit is shorted to system power
 
Transmission Range Sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0706



A/T Check Shifter Signal Circuit Malfunction

Possible Causes:



Shifter out of adjustment
 
TRS T1, T3, T41 or T42 sense circuit is open, shorted to ground or to voltage
 
TRS Sensor has failed
 
Intermittent wiring or connector problems
 
PCM has failed
 

Trouble Code: P0711



A/T Transmission Fluid Temperature Sensor Signal - No Rise After Startup

Possible Causes:



TFT Sensor signal has an intermittent high resistance condition
 
TFT Sensor is damaged, skewed or has drifted out of range
 
PCM has failed
 

Trouble Code: P0712



A/T Transmission Fluid Temperature Sensor Low Input

Possible Causes:



TFT Sensor signal circuit is shorted to ground
 
TFT Sensor is damaged or has failed (it may be shorted)
 
PCM has failed
 

Trouble Code: P0713



A/T Transmission Fluid Temperature Sensor High Input

Possible Causes:



TFT Sensor signal circuit is open between the Sensor and PCM
 
TFT Sensor ground circuit is open between Sensor and PCM
 
TFT Sensor is damaged or has failed (it may be open internally)
 
PCM has failed
 

Trouble Code: P0714



A/T Transmission Fluid Temperature Sensor Intermittent

Possible Causes:



Related DTCs are present
 
TFT Sensor is damaged or has failed (it may be shorted)
 
Intermittent wiring or connector problems
 
PCM has failed
 

 
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