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P1297-NO CHANGE IN MAP FROM START TO RUN —
TEST
3
Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Turn the ignition on.
Measure the voltage of the (K6) 5-volt Supply circuit in the MAP Sensor harness
connector.
Is the voltage between 4.5 to 5.2 volts?
Yes → Go To 4
No
4
Turn the ignition off.
Disconnect the MAP Sensor harness connector.
With the DRBIII , monitor the MAP Sensor voltage.
Turn the ignition on.
Is the voltage above 1.2 volts?
Yes → Replace the MAP Sensor.
No
5
Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the (K1) MAP Sensor Signal circuit in the MAP Sensor
harness connector to ground.
Is the resistance below 100 ohms?
Yes → Repair the short to ground in the (K1) MAP Sensor Signal circuit.
No
6
Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between the (K1) MAP Sensor Signal circuit and the (K4)
Sensor ground circuit in the MAP Sensor harness connector.
Is the resistance below 100 ohms?
Yes → Repair the short between the (K4) Sensor ground circuit and the
No
7
If there are no possible causes remaining, view repair.
Repair
ACTION
→ Go To 8
Perform POWERTRAIN VERIFICATION TEST VER - 5.
→ Go To 5
Perform POWERTRAIN VERIFICATION TEST VER - 5.
→ Go To 6
(K1) MAP Sensor Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
→ Go To 7
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
DRIVEABILITY - GAS
177
Continued
APPLICABILITY
All
All
All
All
All
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