Dodge Viper SRT-10 (ZB). Manual - part 426

TEST

ACTION

APPLICABILITY

Visually inspect the Evap purge hose that goes from the Purge Solenoid to the Evap
Canister. Look for any physical damage such as a pinched, plugged, ripped or dry
rotted hose.
Were any problems found?

All

Yes

→ Repair or replace hose as necessary.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

→ Go To 4

Visually inspect the Evap Purge hose that goes between the Evap canister and the
fuel tank. Look for any physical damage such as a pinched, plugged, ripped or dry
rotted hose.
Were any problems found?

All

Yes

→ Repair or replace hose as necessary.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

→ Go To 5

Carefully inspect the Evap Purge Solenoid vacuum supply hose for proper routing.
Also check for a pinched or plugged hose from the throttle body to the Purge Solenoid.
Inspect the vacuum nipple at the throttle body for any damage or plugging.
Make sure vacuum fitting at the purge solenoid is not over installed.
Is the vacuum supply hose and throttle body vacuum nipple free from defects?

All

Yes

→ Go To 6

→ Repair the vacuum supply hose/tube as necessary.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

Note: After disconnecting the Evap Purge Solenoid vacuum connections,
inspect the lines and solenoid for any signs of contamination from the EVAP
Canister. This may indicate a faulty rollover valve. Replace purge solenoid
if contamination is found
Disconnect the vacuum hoses at the EVAP Purge Solenoid.
Using a hand vacuum pump, apply 10 inches of vacuum to the Evap Purge Solenoid
vacuum source port. (component side)
Does the Evap Purge Solenoid hold vacuum?

All

Yes

→ Go To 7

→ Replace the Evap Purge Solenoid and the Evap Canister and

clean out Evap lines as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

Using a hand vacuum pump, apply 10 inches of vacuum to the Evap Purge Solenoid
vacuum source port. (component side)
Ignition on, engine not running.
With the DRBIII

t, actuate the EVAP Purge Solenoid and observe the vacuum gauge.

Does the vacuum drop when the solenoid is actuated?

All

Yes

→ Refer to the INTERMITTENT CONDTION Symptom (Diagnostic

Procedure).
Perform POWERTRAIN VERIFICATION TEST VER - 5.

→ Replace the Evap Purge Solenoid.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

111

DRIVEABILITY - GAS

P0441-EVAP PURGE FLOW MONITOR —

Continued

Symptom List:

P0442-EVAP LEAK MONITOR MEDIUM (0.040) LEAK DETECTED
P0455-EVAP LEAK MONITOR LARGE LEAK DETECTED

Test Note:

All symptoms listed above are diagnosed using the same tests.

The title for the tests will be P0442-EVAP LEAK MONITOR
MEDIUM (0.040) LEAK DETECTED.

When Monitored and Set Condition:

P0442-EVAP LEAK MONITOR MEDIUM (0.040) LEAK DETECTED

When Monitored:

Immediately after a cold start, with battery/ambient temperature

between 40° F and 90° F and coolant temperature within 10° F of battery/ambient.

Set Condition:

If there is a leak larger than 0.040

9 and smaller than 0.0809 in the

evaporative system.

P0455-EVAP LEAK MONITOR LARGE LEAK DETECTED

When Monitored:

Immediately after a cold start, with battery/ambient temperature

between 40° F and 90° F and coolant temperature within 10° F of battery/ambient.

Set Condition:

There is a leak larger than 0.080

9 in the evaporative system.

POSSIBLE CAUSES

GOOD TRIP EQUAL TO ZERO

INTERMITTENT CONDITION

VERIFY EVAPORATIVE EMISSION SYSTEM LEAK

EVAPORATIVE EMISSION LEAK DETECTION

EVAP PURGE SOLENOID

TEST

ACTION

APPLICABILITY

Note: A loose gas cap could have caused this DTC to set. Make sure gas cap
is tight and in good condition. Ensure the gas cap meets OEM specifications.
NOTE: Engine vacuum at must be present at the LDP vacuum port.
Ignition on, engine not running.
With the DRBIII

t, read DTCs and record the related Freeze Frame data.

Is the Good Trip Counter displayed and equal to zero?

All

Yes

→ Go To 2

→ Refer to the INTERMITTENT CONDITION Symptom (Diagnos-

tic Procedure).
Perform POWERTRAIN VERIFICATION TEST VER - 6.

112

DRIVEABILITY - GAS

TEST

ACTION

APPLICABILITY

To continue testing you will need Miller Tool #8404 Evaporative Emission Leak
Detector (EELD).
WARNING: Keep lit cigarettes, sparks, flames, and other ignition sources
away from the test area to prevent the ignition of explosive gases. Keep the
test area well ventilated.
NOTE: The fuel tank should have between 20% and 80% of fuel tank capacity
to properly test the Evap system.
Disconnect the vacuum supply hose at the Leak Detection Pump.
Connect and apply a continuous vacuum supply (i.e. 20

9Hg) to the Leak Detection

Pump. A vacuum pump such as an A/C recovery unit works well.
Using the DRBIII

t, select Engine/System Tests and actuate the Leak Detect Pump

Test (Option 3/Hold PSI).
NOTE: The above energizes the LDP solenoid and allows the constant
vacuum source to apply vacuum to the LDP pump diaphragm. This lifts the
diaphragm up and seals the atmospheric canister vent valve at the bottom
of the Leak Detection Pump.
Connect the red power lead of Miller Tool #8404 to the battery positive terminal and
the black ground lead to battery negative terminal.
NOTE: See Charts and Graph support material EELD Calibration Setup for
an example.
Connect shop air to the #8404 EELD.
Set the smoke/air control switch to AIR.
Insert the tester’s AIR supply tip (clear hose) into the appropriate calibration orifice
on the tester’s control panel (based on DTC leak size).
Press the remote smoke/air start button.
Position the red flag on the air flow meter so it is aligned with the indicator ball.
When the calibration is complete, release the remote button. The EELD is now
calibrated the flow meter in liters per minute to the size leak indicated by the DTC
set in the PCM.
Install the service port adapter #8404-14 on the vehicle’s service port.
Connect the Air supply hose from the EELD to the service port.
Press the remote button to activate AIR flow.
NOTE: Larger volume fuel tanks, and/or those with less fuel, may require 4
to 5 minutes to fill.
Compare the flow meter indicator ball reading to the red flag.
ABOVE the red flag indicates a leak present.
BELOW the red flag indicates a sealed system.
Is the indicator ball above the red flag?

All

Yes

→ Go To 3

→ Refer to the INTERMITTENT CONDITION Symptom (Diagnos-

tic Procedure).
Perform POWERTRAIN VERIFICATION TEST VER - 6.

113

DRIVEABILITY - GAS

P0442-EVAP LEAK MONITOR MEDIUM (0.040) LEAK DETECTED —

Continued

TEST

ACTION

APPLICABILITY

NOTE: A thorough visual inspection of the Evap system hoses, tubes, and
connections may save time in your diagnosis. Look for any physical damage
or signs of wetness at connections. The strong smell of fuel vapors may aid
diagnosis also.
To continue testing, you will need Miller Tool #8404 Evaporative Emissions Leak
Detector (EELD).
Remove the Air supply hose from the service port.
Connect the SMOKE supply tip (black hose) to the service port.
Set the smoke/air control switch to SMOKE.
NOTE: The flow meter indicator ball will not move at this point.
Press the remote smoke/air start button.
NOTE: Ensure that smoke has filled the EVAP system by continuing to press
the remote smoke/air start button, remove the vehicle fuel cap, and wait for
the smoke to exit. Once smoke is indicated reinstall the fuel cap.
NOTE: For optimal performance, introduce smoke into the system for an
additional 60 seconds; continue introducing smoke at 15 second intervals,
as necessary.
While still holding the remote smoke/air start button, use the white light (#8404-
CLL) to follow the EVAP system path, and look for the source of the leak indicated by
exiting smoke.
If a leak is concealed from view (i.e., top of fuel tank), release the remote smoke/air
start button, and use the ultraviolet (UV) black light #8404-UVL and the yellow
goggles 8404-20 to look for residual traces of dye that is left behind by the smoke.
The exiting smoke deposits a residual fluid that is either bright green or bright
yellow in color when viewed with a UV light.
Was a leak found?

All

Yes

→ Repair or replace the leaking component as necessary.

Perform POWERTRAIN VERIFICATION TEST VER - 6.

→ Go To 4

NOTE: After disconnecting the Evap Purge Solenoid vacuum connections,
inspect the lines and solenoid for any signs of contamination from the EVAP
Canister. This may indicate a faulty rollover valve. Replace/repair as
necessary.
Turn the ignition off.
Disconnect the vacuum hoses at the Evap Purge Solenoid.
Using a hand vacuum pump, apply 10 inches of vacuum to the Evap Purge Solenoid
vacuum source port on the component side.
NOTE: Monitor the vacuum gauge for at least 15 seconds.
Does the Evap Purge Solenoid hold vacuum?

All

Yes

→ Refer to the INTERMITTENT CONDITION Symptom (Diagnos-

tic Procedure).
Perform POWERTRAIN VERIFICATION TEST VER - 6.

→ Replace the EVAP Purge Solenoid.

Perform POWERTRAIN VERIFICATION TEST VER - 6.

114

DRIVEABILITY - GAS

P0442-EVAP LEAK MONITOR MEDIUM (0.040) LEAK DETECTED —

Continued

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