Dodge Viper SRT-10 (ZB). Manual — part 451
TEST
ACTION
APPLICABILITY
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?
All
Yes
→ Go To 5
No
→ Go To 6
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?
All
Yes
→ Go To 9
No
→ Replace the Throttle Position Sensor or the Throttle Body Assem-
bly on a 5.7.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
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?
All
Yes
→ Replace the sensor that is pulling down the (K7) 5-volt supply.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
No
→ Go To 7
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?
All
Yes
→ Repair the short to ground in the (K7) 5-volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
No
→ Go To 8
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?
All
Yes
→ Repair the short to ground in the (F888) 5-volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
No
→ Go To 9
211
STARTING
*NO RESPONSE FROM PCM WITH A NO START CONDITION —
Continued
TEST
ACTION
APPLICABILITY
9
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 is no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module per Service
Information.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
212
STARTING
*NO RESPONSE FROM PCM WITH A NO START CONDITION —
Continued
Symptom:
*START AND STALL CONDITION
POSSIBLE CAUSES
CHECKING DTCS
CHECKING SKIM DTCS
THROTTLE POSITION SENSOR SWEEP
TP SENSOR #1 VOLTAGE GREATER THAN 0.92 VOLTS WITH THROTTLE CLOSED
ECT SENSOR OPERATION
OTHER POSSIBLE CAUSES FOR START & STALL
FUEL CONTAMINATION
TEST
ACTION
APPLICABILITY
1
Ignition on, engine not running.
With the DRBIII
t, read DTCs.
Are any DTCs present?
All
Yes
→ Refer to the perform the appropriate Symptom diagnostics.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
No
→ Go To 2
2
Ignition on, engine not running.
NOTE: If you are unable to communicate with the SKIM, refer to the
Communication Category and perform the appropriate symptom.
With the DRBIII
t, read the SKIM codes.
Are there any SKIM DTCs?
All
Yes
→ Refer to the Sentry Key Immobilizer category and perform the
appropriate symptom diagnostics.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
No
→ Go To 3
3
Ignition on, engine not running.
With the DRBIII
t, read TP Sensor voltage.
While monitoring the DRBIII
t, slowly open and close the Throttle.
Was the voltage change smooth?
All
Yes
→ Go To 4
No
→ Replace the Throttle Position Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
4
Ignition on, engine not running.
With the DRBIII
t, read Throttle Position Sensor #1 voltage. Throttle must be against
stop.
Is the voltage 0.92 or less with the Throttle closed?
All
Yes
→ Go To 5
No
→ Check for a binding throttle condition. If OK, replace the Throttle
Position Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
213
STARTING
TEST
ACTION
APPLICABILITY
5
NOTE: For this test to be valid, the thermostat must be operating correctly.
NOTE: This test works best if performed on a cold engine (cold soaked).
NOTE: If the vehicle was allowed to sit over night with no engine start,
coolant temperature should be near ambient temperatures.
Ignition on, engine not running.
With the DRBIII
t, read the ECT value.
NOTE: If engine coolant temperature is above 82° C (180° F), allow the
engine to cool until 65° C (150° F) is reached.
Start the engine.
During engine warm-up, monitor the Engine Coolant Temperature value. The
temperature value change should be a smooth transition from start up to normal
operating temp 82° C (180° F). The value should reach at least 82° C (180° F).
Did the Engine Temperature value increase smoothly and did it reach at least 82° C
(180° F)?
All
Yes
→ Go To 6
No
→ Replace the Engine Coolant Temperature Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
6
The following additional items should be checked as a possible cause for a start and
stall condition.
Refer to any Technical Service Bulletins (TSBs) that may apply to the symptom.
The exhaust system must be free of any restrictions.
The engine compression must be within specifications.
The engine valve timing must be within specifications.
The engine must be free from vacuum leaks.
The throttle body must be free of carbon buildup and dirt.
Do any of the above conditions exist?
All
Yes
→ Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
No
→ Go To 7
7
Verify that the Fuel tank is not empty before continuing.
Follow the diagnostics for Checking Fuel Delivery in this manual.
Was the No Start condition solved after following the above diagnostic test?
All
Yes
→ Test Complete.
No
→ Check for contamination/water in the fuel. Ensure the fuel being
used in this vehicle meets manufactures Fuel Requirement, refer
to the service manual.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
214
STARTING
*START AND STALL CONDITION —
Continued
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