Dodge ZB 2005 Service Manual page 1332

*NO RESPONSE FROM PCM WITH A NO START CONDITION —
TEST
4 Connect the PCM harness connectors.
Disconnect the TP Sensor harness connector.
Ignition on, engine not running.
Measure the voltage on the (K7) 5-volt Supply circuit.
Is the voltage between 4.5 and 5.2 volts?
Yes → Go To 5
No
5 Turn the ignition off.
Disconnect the CKP Sensor harness connector.
NOTE: Connect the TP Sensor harness connector.
Ignition on, engine not running.
Measure the voltage on the (K7) 5-volt Supply circuit in the CKP Sensor harness
connector.
Is the voltage between 4.5 and 5.2 volts?
Yes → Go To 9
No
6 Turn the ignition off.
Disconnect the TP Sensor harness connector.
Ignition on, engine not running.
Measure the voltage on the (K7) 5-volt Supply circuit.
Disconnect all the sensors that use the (K7) 5-volt Supply circuit.
Did the voltage return to 4.5 to 5.2 volts when disconnecting any of the sensors?
Yes → Replace the sensor that is pulling down the (K7) 5-volt supply.
No
7 Turn the ignition off.
Disconnect PCM harness connectors.
Disconnect all the sensors that share the (K7) 5-volt Supply circuit.
Measure the resistance between ground and the (K7) 5-volt Supply circuit at one of
the sensor harness connectors.
Is the resistance below 100 ohms?
Yes → Repair the short to ground in the (K7) 5-volt Supply circuit.
No
8 Disconnect all sensors that use the (F888) 5-volt Supply.
Measure the resistance between ground and the (F888) 5-volt Supply circuit at one
of the sensors harness connector.
Is the resistance below 100 ohms?
Yes → Repair the short to ground in the (F888) 5-volt Supply circuit.
No
ACTION
→ Go To 6
→ Replace the Throttle Position Sensor or the Throttle Body Assem-
bly on a 5.7.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
→ Go To 7
Perform POWERTRAIN VERIFICATION TEST VER - 1.
→ Go To 8
Perform POWERTRAIN VERIFICATION TEST VER - 1.
→ Go To 9
211
STARTING
Continued
APPLICABILITY
All
All
All
All
All