Dodge ZB 2005 Service Manual page 1268

P1297-NO CHANGE IN MAP FROM START TO RUN —
TEST
3 Install the MAP Sensor.
Ignition on, engine not running.
With the DRBIII , read the MAP Sensor voltage.
Is the voltage below 3.19 volts?
Yes → Go To 4
No
4 Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Ignition on, engine not running.
Measure the voltage on the (K7) 5-volt Supply circuit at the MAP Sensor harness
connector.
Is the voltage between 4.5 to 5.2 volts?
Yes → Go To 5
No
5 With the DRBIII , monitor the MAP Sensor voltage with Sensor harness connector
disconnected.
Is the voltage above 1.2 volts?
Yes → Replace the MAP Sensor.
No
6 Turn the ignition off.
Disconnect the PCM harness connectors.
Measure the resistance between ground and the (K1) MAP Sensor Signal circuit at
the MAP Sensor harness connector.
Is the resistance below 100 ohms?
Yes → Repair the short to ground in the (K1) MAP Sensor Signal circuit.
No
7 Measure the resistance between the (K1) MAP Sensor Signal circuit and the (K900)
Sensor ground circuit at the MAP Sensor harness connector.
Is the resistance below 100 ohms?
Yes → Repair the short between the (K900) Sensor ground and the (K1)
No
8 Turn the ignition off.
Disconnect the PCM harness connectors.
Measure the resistance of the (K7) 5-volt Supply circuit from the MAP Sensor
harness connector to the PCM harness connector.
Is the resistance below 5.0 ohms?
Yes → Go To 9
No
ACTION
→ Refer to the INTERMITTENT CONDITION Symptom (Diagnos-
tic Procedure).
Perform POWERTRAIN VERIFICATION TEST VER - 5.
→ Go To 8
Perform POWERTRAIN VERIFICATION TEST VER - 5.
→ Go To 6
Perform POWERTRAIN VERIFICATION TEST VER - 5.
→ Go To 7
MAP Sensor Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
→ Go To 10
→ Repair the open in the (K7) 5-volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
DRIVEABILITY - GAS
147
Continued
APPLICABILITY
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