TEST
ACTION
APPLICABILITY
6
Turn the ignition off.
Disconnect the TP Sensor harness connector.
Disconnect the MAP Sensor harness connector.
Disconnect the A/C Pressure Sensor harness connector.
Disconnect the EGR Solenoid harness connector.
Disconnect the PCM harness connectors.
Measure the resistance of the (F855) 5-volt Supply circuit in the TP Sensor harness
connector to ground.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the short to ground in the (F855) 5-Volt Supply Circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 7
7
NOTE: Before Continuing: Disconnect the PCM harness connector and
check the related wiring terminals for corrosion, damage or terminal push
out. Repair as necessary.
NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors. Pay
particular attention to all Power and Ground circuits.
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
8
NOTE: The TP Sensor harness connector must be connected during this
test.
Disconnect the MAP Sensor harness connector.
Turn the ignition on.
Measure the (F855) 5-volt Supply circuit in the MAP Sensor harness connector.
Is the Voltage below 4.5 Volts?
All
Yes
→ Replace the TP Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 9
188
DRIVEABILITY - SBEC
P1496-5 VOLT SUPPLY, OUTPUT TOO LOW —
Continued