TEST
ACTION
APPLICABILITY
17
Turn the ignition off.
Disconnect the MAP Sensor harness connector.
With the DRBIII
t, monitor the MAP Sensor voltage.
Turn the ignition on.
Connect a jumper wire between the MAP Sensor Signal circuit and the Sensor
ground circuit .
Cycle the ignition switch from off to on.
With the DRBIII
t, monitor the MAP Sensor voltage.
Does the DRBIII
t display MAP voltage from approximately 4.9 volts to below 0.5
volt?
All
Yes
→
Replace the MAP Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
Go To
18
18
Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the MAP Sensor Signal circuit from the MAP Sensor
harness connector to the PCM harness connector.
Is the resistance below 5 ohms?
All
Yes
→
Go To
19
No
→
Repair the MAP Sensor Signal circuit for high resistance.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
19
Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the MAP Sensor Signal circuit from the MAP Sensor
harness connector to ground.
Is the resistance above 5 ohms?
All
Yes
→
Go To
20
No
→
Repair the MAP Sensor Signal circuit for high resistance to
ground.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
20
Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the Sensor ground circuit from the MAP Sensor harness
connector to the PCM harness connector.
Is the resistance below 5 ohms?
All
Yes
→
Go To
21
No
→
Repair the Sensor Ground circuit for high resistance.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
21
If there are no possible causes remaining, view repair.
All
Repair
Replace the Powertrain Control Module.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
76
DRIVEABILITY - GAS
P0121-TPS VOLTAGE DOES NOT AGREE WITH MAP —
Continued