Dodge ZB 2005 Service Manual page 1283

DRIVEABILITY - GAS
P1492-AMBIENT/BATTERY TEMPERATURE SENSOR VOLTAGE TOO
HIGH —
Continued
TEST
3 Turn the ignition off.
Disconnect the PCM harness connectors.
Ignition on, engine not running.
Measure the voltage on the (K25) Battery Temp Signal circuit at the Sensor harness
connector.
Is the voltage above 5.2 volts?
Yes → Repair the short to voltage in the (K25) Batt Temp Signal circuit.
→ Go To 4
No
4 Turn the ignition off.
Measure the resistance of the (K25) Battery Temp Signal circuit from the Battery
Temp Sensor harness connector to the PCM harness connector.
Is the resistance below 5.0 ohms?
Yes → Go To 5
→ Repair the open in the (K25) Batt Temp Signal circuit.
No
5 Measure the resistance in the (K900) Sensor ground circuit from the PCM harness
connector to the Sensor connector.
Is the resistance below 5.0 ohms?
Yes → Go To 6
→ Repair the open in the (K900) Sensor ground circuit.
No
6 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.
Repair
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Replace and program the Powertrain Control Module per Service
Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
162
APPLICABILITY
All
All
All
All