Symptom:
P1189-TIP SENSOR CIRCUIT LOW
When Monitored and Set Condition:
P1189-TIP SENSOR CIRCUIT LOW
When Monitored: Ignition on. Throttle Position Sensor voltage less than 1.2 volts.
Battery voltage greater than 10 volts.
Set Condition: The TIP Sensor signal voltage is less than 0.0782 volts for 1.7 seconds.
One trip Fault.
POSSIBLE CAUSES
TIP SENSOR VOLTAGE BELOW .078 VOLTS
(K6) 5 VOLT SUPPLY CIRCUIT SHORT TO GROUND
(K6) 5 VOLT SUPPLY CIRCUIT SHORT TO SENSOR GROUND
(K6) 5 VOLT SUPPLY OPEN
TIP SENSOR INTERNAL FAILURE
(A23) TIP SIGNAL CIRCUIT SHORTED TO GROUND
(A23) TIP SIGNAL CIRCUIT SHORTED TO (K167) SENSOR GROUND CIRCUIT
PCM
TEST ACTION APPLICABILITY
1 Start the engine.
With the DRBIIIt, read the TIP Sensor voltage.
Is the voltage below .078 of a volt?
All
Yes → Go To 2
No → Refer to the INTERMITTENT CONDITION symptom in the
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
2 Turn the ignition off.
Disconnect the TIP Sensor harness connector.
Ignition on, engine not running.
Measure the voltage of the (K6) 5 Volt Supply circuit in the TIP Sensor harness
connector.
Is the voltage between 4.5 to 5.2 volts?
All
Yes → Go To 3
No → Go To 6
253
DRIVEABILITY - NGC
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