Lexus Car ES, IS, LS 1998-06

3.5L V6 - Auto 2

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Trouble Code: P1129



Electric Throttle Control System (ETCS) Malfunction

Possible Causes:



ETCS (system) is damaged or has failed
 
PCM has failed
 

Trouble Code: P1200



Fuel Pump Relay/ECU Circuit Malfunction

Possible Causes:



Fuel Pump ECU control circuit is open or shorted to ground
 
Fuel Pump ECU control circuit is shorted to system power (B+)
 
Fuel Pump ECU power circuit is open (check power from relay)
 
Fuel Pump ECU is damaged or has failed
 
Fuel Pump is damaged or has failed
 
PCM has failed
 

Trouble Code: P1630



Traction Control System Malfunction

Possible Causes:



ETC+ or ETC signal circuit is open, shorted to ground or power
 
EFI+ or EFI- signal circuit is open, shorted to ground or power
 
Throttle Control ECU or the PCM has failed
 

Trouble Code: P1633



Engine Throttle Control System Circuit Malfunction

Possible Causes:



Clear the codes and determine if this code resets. If the same trouble code (P1633 resets), the PCM has failed.
 
TSB TC002-03 (6/03) contains information related to this code
 

 
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