Dodge ZB 2005 Service Manual page 1169

DRIVEABILITY - GAS
Symptom:
P0122-THROTTLE POSITION SENSOR #1 VOLTAGE TOO LOW
When Monitored and Set Condition:
P0122-THROTTLE POSITION SENSOR #1 VOLTAGE TOO LOW
When Monitored: With the ignition on and battery voltage above 10.4 volts.
Set Condition: Throttle Position Sensor voltage at the PCM is lower than 0.1 of a volt for
1.3 seconds.
TP SENSOR SWEEP
INTERMITTENT CONDITION
(K7) 5-VOLT SUPPLY CIRCUIT OPEN
(K7) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
TP SENSOR
(K22) TP SENSOR NO.1 SIGNAL CIRCUIT SHORTED TO GROUND
(K22) TP SENSOR NO.1 SIGNAL CIRCUIT SHORTED TO (K900) SENSOR GROUND CIRCUIT
PCM
TEST
1 Ignition on, engine not running.
With the DRBIII , read DTCs and record the related Freeze Frame data.
With the DRBIII , read the Throttle Position Sensor voltage.
Is the voltage below 0.2 of a volt?
Yes → Go To 2
→ Go To 9
No
2 Turn the ignition off.
Disconnect the TP Sensor harness connector.
Ignition on, engine not running.
Measure the voltage of the (K7) 5-volt Supply circuit at the TP Sensor harness
connector.
Is the voltage between 4.5 to 5.2 volts?
Yes → Go To 3
→ Go To 6
No
3 Ignition on, engine not running, and the TP Sensor still disconnected.
With the DRBIII , monitor the TP Sensor voltage.
Is the voltage above 4.5 volts?
Yes → Replace the Throttle Position Sensor.
→ Go To 4
No
POSSIBLE CAUSES
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5.
48
APPLICABILITY
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