TEST
ACTION
APPLICABILITY
2
When monitored: Continuously with the ignition key on.
When set: The Throttle Position Sensor Signal circuit is out of range for 7 seconds or
the Sensor Ground circuit is open or shorted to voltage for 7 seconds.
This is the When monitored / When set conditions for DTC P0122.
All
Continue
Go To
3
3
With the DRBIII
t, read PCM DTC’s.
Are there any TPS related DTC’s stored in the PCM?
All
Yes
→
Repair all Powertrain TPS codes before performing the Transmis-
sion diagnostics.
Perform AW4 TRANS VERIFICATION TEST-VER1.
No
→
Go To
4
4
Start the engine. Allow the engine to idle.
With the DRBIII
t, Check the Throttle Position Sensor Voltage under Transmission
sensors.
Is the Throttle Position Sensor voltage below 0.3 or above 1.0 volts?
All
Yes
→
Go To
5
No
→
Go To
11
5
Ignition Off.
Disconnect the Throttle Position Sensor (TPS).
Disconnect the Transmission Control Module (TCM).
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the TPS Signal Circuit from the TCM connector to the TPS
Connector.
Is the resistance below 5.0 ohms?
All
Yes
→
Go To
6
No
→
Repair the open TPS Signal circuit.
Perform AW4 TRANS VERIFICATION TEST-VER1.
6
Ignition Off.
Disconnect the TPS harness connector.
Disconnect the TCM harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the Sensor Ground Circuit between the TPS connector and
the Transmission Control Module connector.
Is the resistance below 5.0 ohms?
All
Yes
→
Go To
7
No
→
Repair the open TPS Sensor Ground circuit.
Perform AW4 TRANS VERIFICATION TEST-VER1.
13
TRANSMISSION
P0122-THROTTLE POSITION SENSOR —
Continued