2007 ISUZU KB P190 Workshop Repair Manual

Page 2313 of 6020

ISUZU KB P190 2007  Workshop Repair Manual ENGINE DRIVEABILITY AND EMISSIONS 6E–143
DIAGNOSTIC TROUBLE CODE (DTC) P0122 THROTTLE POSITION SENSOR LOW INPUT
Condition for setting the DTC and action taken when the DTC sets 
Circuit Description

Page 2314 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 6E–144 ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Trouble Code (DTC) P0122 Throttle Position Sensor Low Input
StepAction Value(s) Yes No
1 Was the “On-Board Diagnostic (OBD) System Check” perf

Page 2315 of 6020

ISUZU KB P190 2007  Workshop Repair Manual ENGINE DRIVEABILITY AND EMISSIONS 6E–145
7 Using the DVM and check the TPS power supplycircuit.
1. Ignition “On”, engine “Off”.  
2. Disconnect the TPS connector.  
3. Check the circuit for

Page 2316 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 6E–146 ENGINE DRIVEABILITY AND EMISSIONS
9 Using the DVM and check the TPS signal circuit.Breaker box is available: 
1. Ignition “Off”, engine “Off”.  
2. Install the breaker box as type A.

Page 2317 of 6020

ISUZU KB P190 2007  Workshop Repair Manual ENGINE DRIVEABILITY AND EMISSIONS 6E–147
DIAGNOSTIC TROUBLE CODE (DTC) P0123 THROTTLE POSITION SENSOR HIGH INPUT
Condition for setting the DTC and action taken when the DTC sets 
Circuit Description

Page 2318 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 6E–148 ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Trouble Code (DTC) P0123 Throttle Position Sensor High Input
StepAction Value(s) Yes No
1 Was the “On-Board Diagnostic (OBD) System Check” per

Page 2319 of 6020

ISUZU KB P190 2007  Workshop Repair Manual ENGINE DRIVEABILITY AND EMISSIONS 6E–149
7 Using the DVM and check the TPS power supplycircuit.
1. Ignition “On”, engine “Off”.  
2. Disconnect the TPS connector.  
3. Check the circuit for

Page 2320 of 6020

ISUZU KB P190 2007  Workshop Repair Manual 6E–150 ENGINE DRIVEABILITY AND EMISSIONS
11 Using the DVM and check the TPS ground circuit.Breaker box is available: 
1. Ignition “Off”, engine “Off”.  
2. Install the breaker box as type A.