Content .. 447 448 449 450 ..

Dodge Viper SRT-10 (ZB). Manual - part 449

Symptom:

*ENGINE CRANKS BUT DOES NOT START

POSSIBLE CAUSES

NO START PRE-TEST

POWERTRAIN FUSES OPEN

SECONDARY INDICATORS PRESENT

ENGINE MECHANICAL PROBLEM

(K342) ASD RELAY OUTPUT CIRCUIT OPEN

FUEL CONTAMINATION

TEST

ACTION

APPLICABILITY

NOTE: The following list of items must be checked before continuing with
any no start tests.
The battery must be fully charged and in good condition. A low charged battery may
produce invalid test results. If the battery is low, charge the battery and then attempt
to start the vehicle by cranking the engine for 15 seconds, 3 consecutive times.
This will allow any DTCs to set that may have been erased due to a dead battery.
Try to communicate with PCM if not able to communicate check fuses.
Ensure the Powers and Ground to the PCM are ok.
Make sure the PCM communicates with the DRBIII

t and that there are no DTCs

stored in the PCM memory. If the PCM reports a No Response condition, refer to the
Communication category for the proper tests.
Read the PCM DTCs with the DRBIII

t. If any DTCs are present, they must be

repaired before continuing with any other No Start diagnostic tests. Refer to the
Symptom list for the related P-code that is reported by the PCM.
Ensure that the Bus is functional. Attempt to communicate with the Instrument
Cluster and VTSS, If you are unable to establish communications refer to the
Communication category for the proper symptoms.
The Sentry Key Immobilizer System must be operating properly. Check for proper
communication with the DRBIII

t and check for DTCs that may be stored in the

Sentry Key Immobilizer Module (SKIM). Repair the DTC(s) before continuing.
If no DTCs are found, using the DRBIII

t, select Clear PCM (BATT Disconnect).

Crank the engine several times. Using the DRBIII

t, read DTCs. If a DTC is present

perform the DTC diagnostics before continuing.
Were any problems found?

All

Yes

→ Repair as necessary.

Perform POWERTRAIN VERIFICATION TEST VER - 1.

→ Go To 2

Check for any open fuses in the PDC or Junction Block that may be related to the No
Start condition.
Are any of the fuses open?

All

Yes

→ Replace the open fuse and check the related circuit(s) for a short

to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 1.

→ Go To 3

203

STARTING

TEST

ACTION

APPLICABILITY

Ignition on, engine not running.
With the DRBIII

t, under DTCs & Related Functions, read the Secondary Indicators

while cranking the engine.
Are there any Secondary Indicators present while cranking the engine?

All

Yes

→ Refer to symptom list and perform tests related to the secondary

indicator that is reported by the DRBIII

Perform POWERTRAIN VERIFICATION TEST VER - 1.

→ Go To 4

Check for any of the following conditions/mechanical problems.
ENGINE VALVE TIMING - must be within specifications, check for broken timing
components
ENGINE COMPRESSION - must be within specifications
ENGINE EXHAUST SYSTEM - must be free of any restrictions or leaks.
Are there any engine mechanical problems?

All

Yes

→ Repair as necessary.

Perform POWERTRAIN VERIFICATION TEST VER - 1.

→ Go To 5

Turn the ignition off.
Remove the ASD relay from the PDC.
Disconnect the PCM harness connectors.
Verify the ASD Relay is getting voltage on the Fused B+ circuits before continuing.
Measure the resistance of the ASD Relay Output circuit from the ASD Relay
connector to the PCM harness connector, Ignition coils, and the fuel injectors.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 6

→ Repair the open in the (K342) ASD Relay Output circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 1.

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.

→ 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.

204

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*ENGINE CRANKS BUT DOES NOT START —

Continued

Symptom:

*FUEL PRESSURE LEAK DOWN

POSSIBLE CAUSES

FAULTY FUEL PUMP MODULE

FUEL INJECTOR(S)

TEST

ACTION

APPLICABILITY

NOTE: Before continuing visually and physically inspect the fuel delivery
system for external leaks or damage. Repair /replace as necessary.
Turn the ignition off.
WARNING: The fuel system is under a constant pressure even with the
engine off. Before testing or servicing any fuel system hose, fitting or line,
the fuel system pressure must be released.
Install special tool #6539 (5/16

9) or #6631 (3/89) fuel line adapter.

Install the fuel pressure gauge.
Start the engine and allow the fuel system to reach maximum pressure.
Turn the ignition off.
NOTE: Fuel specification is 379 KPa +/- 14 KPa (55 psi +/- 2 psi).
Using special tool #C4390, Hose Clamp Pliers, pinch the rubber fuel line between the
fuel pressure gauge and the engine.
Monitor the fuel pressure gauge for a minimum of 5 minutes.
NOTE: The pressure should not fall below 276 KPa (40 psi)
Does the fuel pressure drop?

All

Yes

→ Replace Fuel Pump Module.

Perform POWERTRAIN VERIFICATION TEST VER - 2.

→ Go To 2

WARNING: The fuel system is under a constant pressure even with the
engine off. Before testing or servicing any fuel system hose, fitting or line,
the fuel system pressure must be released.
Remove special tool #C4390.
Start the engine and allow the fuel system to reach maximum pressure.
Turn the ignition off.
NOTE: Fuel specification is 379 KPa +/- 14 KPa (55 psi +/- 2 psi).
Move special tool #C4390, Hose Clamp Pliers, from between the fuel pressure gauge
and the engine to between the fuel pressure gauge and fuel pump module.
Monitor the fuel pressure gauge for a minimum of 5 minutes.
NOTE: The pressure should not fall below 276 KPa (40 psi)
Does the fuel pressure drop?

All

Yes

→ Replace the leaking fuel injectors.

Perform POWERTRAIN VERIFICATION TEST VER - 2.

→ Test Complete.

205

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Symptom:

*NO CRANK CONDITION

POSSIBLE CAUSES

POWERTRAIN FUSES OPEN

MECHANICAL CONDITION

BATTERY CIRCUIT RESISTANCE TOO HIGH

(G5) FUSED IGNITION SWITCH OUTPUT CIRCUIT

PUSH BUTTON STARTER SWITCH

(F145) FUSED IGNITION SWITCH OUTPUT CIRCUIT

CLUTCH INTERLOCK SWITCH

(F45) FUSED IGNITION SWITCH OUTPUT CIRCUIT

(K90) STARTER RELAY CONTROL CIRCUIT OPEN

STARTER RELAY

(A107) FUSED B+ CIRCUIT

(T40) STARTER RELAY OUTPUT CIRCUIT OPEN

STARTER

TEST

ACTION

APPLICABILITY

Check for any open fuses in the PDC or Junction Block that may be related to the No
Start condition.
Are any of the fuses open?

All

Yes

→ Replace any open fuses and check the related circuit(s) for a short

to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 1.

→ Go To 2

NOTE: Verify the battery is fully charged and capable of passing a load test
before continuing.
WARNING: MAKE SURE THE BATTERY IS DISCONNECTED, THEN WAIT
TWO MINUTES BEFORE PROCEEDING.
Turn the engine over by hand to ensure the engine is not seized.
Is the engine able to turn over?

All

Yes

→ Go To 3

→ Repair the mechanical condition preventing the starter motor

from cranking.
Perform POWERTRAIN VERIFICATION TEST VER - 1.

Check the Battery Cables for excessive resistance using the service information
procedure.
Did either Battery Cable have a voltage drop greater than 0.2 of a volt?

All

Yes

→ Repair the excessive resistance in the Battery circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 1.

→ Go To 4

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