P0122

DTC P0122
plausibility check - throttle angle Drive cycle B:Signal out of range - below minimum.

DTC P0123
plausibility check - throttle angle Drive cycle B:Signal out of range - above maximum.

Possible causes by suggested order of priority:
^ Connectors C175, ECM C636 (B).
^ Open circuit - C636/24 (YLG) to C175/3 (YLG).
^ Open circuit - C636/25 (RB) to C175/2 (RB).
^ 5V MAFS supply voltage C175/1 (R) to C175/2 (RB).
^ Throttle position sensor fault.

Connectors C175, ECM C636 (B).
CONNECTOR
^ Check for connector not correctly latched, backed out pins, damaged pins, corroded pins.

Open Circuit - C636/24 (YLG) to C175/3 (YLG).
OPEN_CIRCUIT
^ Check resistance > 1M Ohm

Open Circuit - C636/25 (RB) to C175/2 (RB).
OPEN_CIRCUIT
^ Check resistance > 1M Ohm

5V MAFS Supply Voltage C175/1 (R) to C175/2 (RB).
CHECK THE FOLLOWING:
^ 5V MAFS supply voltage C175/1 (R) to C175/2 (RB).
ACCEPTABLE RESULTS
^ Between 4.5V and 5.5V.
DIAGNOSTIC HINTS
^ If the voltage is too high a short circuit to battery or faulty ECM should be suspected.
^ If the voltage is too low an open circuit or connector problem should be suspected.

Throttle Position Sensor Fault.
CHECK THE FOLLOWING:
^ Throttle position sensor resistance, pins /1 to /3
ACCEPTABLE RANGE
^ 5K Ohms.
CHECK THE FOLLOWING:
^ Throttle position sensor resistance, pins /3 to /2
ACCEPTABLE RANGE
^ Reading should vary from below 100 ohms when the throttle is CLOSED to 5K Ohms as the sensor is moved to fully OPEN.
^ The reading should vary smoothly with no jumps in the reading as the throttle is moved.