Dodge Viper SRT-10 (ZB). Manual — part 418
TEST
ACTION
APPLICABILITY
9
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 soak)
Ignition on, engine not running.
With the DRBIII
t, read the Engine Coolant Temperature Sensor value. If the engine
was allowed to sit overnight (cold soak), the temperature value should be a sensible
value that is somewhere close to the ambient temperature.
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 temp
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 Coolant Temperature value increase smoothly and reach at least
82°C?
All
Yes
→ Go To 10
No
→ Replace the Engine Coolant Temperature Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
10
Check for any of the following conditions/mechanical problems.
AIR INDUCTION SYSTEM - must be free from restrictions.
ENGINE VACUUM - must be at least 13 inches in neutral
ENGINE VALVE TIMING - must be within specifications
ENGINE COMPRESSION - must be within specifications
ENGINE EXHAUST SYSTEM - must be free of any restrictions or leaks.
ENGINE PCV SYSTEM - must flow freely
TORQUE CONVERTER STALL SPEED - must be within specifications
POWER BRAKE BOOSTER - no internal vacuum leaks
FUEL - must be free of contamination
FUEL INJECTOR - plugged or restricted injector; control wire not connected to
correct injector
Are there any engine mechanical problems?
All
Yes
→ Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Refer to the INTERMITTENT CONDITION Symptom (Diagnos-
tic Procedure).
Perform POWERTRAIN VERIFICATION TEST VER - 5.
11
Disconnect the O2 Sensor harness connector.
Ignition on, engine not running.
With the DRBIII
t, monitor the O2 Sensor voltage.
Is the O2 Sensor voltage above 4.5 volts?
All
Yes
→ Replace the O2 Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 12
12
Turn the ignition off.
Disconnect the PCM harness connectors.
Measure the resistance of the O2 Sensor Signal circuit from the PCM harness
connector to the O2 Sensor harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 13
No
→ Repair the open in the O2 Sensor Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
79
DRIVEABILITY - GAS
P0172-1/1 FUEL SYSTEM RICH —
Continued
TEST
ACTION
APPLICABILITY
13
Ignition on, engine not running.
Leave the O2 Sensor and PCM harness connectors disconnected.
Measure the voltage on the O2 Sensor Signal circuit at the O2 Sensor harness
connector.
Is the voltage above 5.2 volts?
All
Yes
→ Repair the short to voltage in the O2 Sensor Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 14
NOTE: Turn the ignition off before continuing.
14
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.
All
Repair
Replace and program the Powertrain Control Module per Service
Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
80
DRIVEABILITY - GAS
P0172-1/1 FUEL SYSTEM RICH —
Continued
Symptom:
P0197-ENGINE OIL TEMPERATURE SENSOR VOLTAGE TOO LOW
When Monitored and Set Condition:
P0197-ENGINE OIL TEMPERATURE SENSOR VOLTAGE TOO LOW
When Monitored:
Ignition on.
Set Condition:
When the PCM recognizes the engine oil temperature sensor signal goes
below a specific value.
POSSIBLE CAUSES
OIL TEMPERATURE VOLTAGE BELOW 1.0 VOLT
ENGINE OIL TEMP SENSOR
(G61) ENGINE OIL TEMP SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
(G61) ENGINE OIL TEMP SENSOR CIRCUIT SHORTED TO (K900) SENSOR GROUND CIRCUIT
PCM
TEST
ACTION
APPLICABILITY
1
Ignition on, engine not running.
With the DRBIII
t, read DTCs and record the related Freeze Frame data.
With the DRBIII
t, read the Engine Oil Temp Sensor voltage.
Is the ECT Sensor voltage below 1.0 volt?
All
Yes
→ Go To 2
No
→ Refer to the INTERMITTENT CONDITION Symptom (Diagnos-
tic Procedure).
Perform POWERTRAIN VERIFICATION TEST VER - 5.
2
Turn the ignition off.
Disconnect the Engine Oil Temp harness connector.
Ignition on, engine not running.
With the DRBIII
t, read Engine Oil Temp voltage.
Is the voltage above 1.0 volt?
All
Yes
→ Replace the Engine Oil Temp Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 3
3
Turn the ignition off.
Disconnect the PCM harness connectors.
Measure the resistance between ground and the (G61) Engine Oil Temp Sensor
Signal circuit at the EOT Sensor harness connector.
Is the resistance below 100 ohms?
All
Yes
→ Repair the short to ground in the (G61) Engine Oil Temp Sensor
Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 4
81
DRIVEABILITY - GAS
TEST
ACTION
APPLICABILITY
4
Measure the resistance between the (G61) Engine Oil Temp Sensor Signal circuit and
the (K900) Sensor ground circuit at the ECT Sensor harness connector.
Is the resistance below 100 ohms?
All
Yes
→ Repair the short between the (K900) Sensor ground circuit and
the (G61) Engine Oil Temp Sensor Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 5
5
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.
All
Repair
Replace and program the Powertrain Control Module per Service
Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
82
DRIVEABILITY - GAS
P0197-ENGINE OIL TEMPERATURE SENSOR VOLTAGE TOO LOW —
Continued
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