PCM/ECM sets DTC P0122 if the PCM/ECM detects signal voltage lower than the possible range of a properly operating TPS1.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Voltage range check | 1. Open in power supply or signal harness 2. Short to ground in power supply or signal harness 3. Poor connection or damaged harness 4. Faulty TPS1 |
Enable Conditions |
•
Ignition "ON" | |
Threshold Value |
•
TPS1 < 0.12V | |
Diagnostic Time |
•
0.05 sec. | |
Mil On Condition |
•
1 Drive Cycles | |
Limp-Home |
•
Forced limited power mode : When the DTC is set, the PCM/ECM reduces engine torque by 25% of normal value.
•
The PCM/ECM uses TPS2 signal to monitor the controlled opening angle of the throttle valve. |
