TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the TP Sensor harness connector.
Turn the ignition on.
Connect a voltmeter to the (F855) 5-volt Supply circuit at the TP Sensor harness
connector.
Monitor the voltage display.
Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Turn the ignition on.
Did the (F855) 5-volt Supply go from below 4.5 volts to above 4.5 volts when MAP
Sensor was disconne
All
Yes
→ Replace the MAP Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 4
4
Turn the ignition off.
Disconnect the TP Sensor harness connector.
Turn the ignition on.
Connect a voltmeter to the (F855) 5-volt Supply circuit at the Throttle Position
Sensor harness connector.
Monitor the voltage display.
Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Turn the ignition on.
Did the (F855) 5-volt Supply go from below 4.5 volts to above 4.5 volts when the A/C
sensor was disc
All
Yes
→ Replace the A/C Pressure Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 5
5
Turn the ignition off.
Disconnect the TP Sensor harness connector.
Turn the ignition on.
Connect a voltmeter to the (F855) 5-volt Supply circuit at the TP Sensor harness
connector.
Monitor the voltage display.
Turn the ignition off.
Disconnect the EGR Solenoid harness connector.
Turn the ignition on.
Did the 5-volt Supply go from below 4.5 volts to above 4.5 volts when the EGR was
disconnected?
All
Yes
→ Replace the EGR Solenoid.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 6
187
DRIVEABILITY - SBEC
P1496-5 VOLT SUPPLY, OUTPUT TOO LOW —
Continued