Dodge ZB 2005 Service Manual page 1267

DRIVEABILITY - GAS
Symptom:
P1297-NO CHANGE IN MAP FROM START TO RUN
When Monitored and Set Condition:
P1297-NO CHANGE IN MAP FROM START TO RUN
When Monitored: With engine RPM +/- 64 of target idle and the throttle blade at closed
throttle.
Set Condition: Too small of a difference is seen between barometric pressure with ignition
on (engine running) and manifold vacuum for 8.80 seconds.
GOOD TRIP EQUAL TO ZERO
MAP SENSOR VACUUM PORT
MAP SENSOR VOLTAGE BELOW 3.19 VOLTS
(K7) 5-VOLT SUPPLY CIRCUIT OPEN
(K7) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
MAP SENSOR
(K1) MAP SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
(K1) MAP SENSOR SIGNAL CIRCUIT SHORTED TO (K900) SENSOR GROUND CIRCUIT
PCM
TEST
1 NOTE: If a MAP high or Low DTC set along with P1297, diagnose the High
or Low DTC first before continuing.
Ignition on, engine not running.
With the DRBIII , read DTCs and record the related Freeze Frame data.
Is the Good Trip Counter displayed and equal to zero?
Yes → Go To 2
→ Refer to the INTERMITTENT CONDITION Symptom (Diagnos-
No
2 Turn the ignition off.
Remove the MAP Sensor.
Inspect the vacuum port, check for restrictions or any foreign materials.
Were any restriction found?
Yes → Repair as necessary.
→ Go To 3
No
POSSIBLE CAUSES
ACTION
tic Procedure).
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
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APPLICABILITY
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All