Dodge Viper SRT-10 (ZB). Manual — part 405
TEST
ACTION
APPLICABILITY
3
With the DRBIII
t, read the Battery Temp Sensor voltage with the Batt Temp Sensor
still disconnected.
Is the voltage above 4.6 volts?
All
Yes
→ Go To 4
No
→ Go To 7
4
Connect a jumper wire between the (K25) Battery Temp Signal circuit and the (K900)
Sensor ground circuit at the Sensor harness connector.
With the DRBIII
t, read the Battery Temp Sensor voltage.
Is the voltage below 1.0 volt?
All
Yes
→ Replace the Battery Temperature Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 5
NOTE: Remove the jumper wire before continuing.
5
Turn the ignition off.
Connect the Battery Temp Sensor harness connector.
NOTE: Ensure the voltmeter leads meet the terminals in the connector and
that there is good terminal to wire connection.
NOTE: Ensure the voltmeter leads are connected for positive polarity
Backprobe the (K25) Battery Temp Sensor Signal circuit at the Sensor harness
connector and the PCM harness connector with both voltmeter leads.
Start the engine.
Allow the engine to idle.
Is the voltage below 0.10 of a volt?
All
Yes
→ Go To 6
No
→ Repair the excessive resistance in the (K25) BatteryTemp Sensor
Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
6
Turn the ignition off.
NOTE: Ensure the voltmeter leads meet the terminals in the connector and
that there is good terminal to wire connection.
NOTE: Ensure the voltmeter leads are connected for positive polarity
Backprobe the (K900) Sensor ground circuit at the Battery Temperature Sensor
harness connector and the PCM harness connector using both volt meter leads.
Start the engine.
Allow the engine to idle.
Is the voltage below 0.10 of a volt?
All
Yes
→ Go To 8
No
→ Repair the excessive resistance in the (K900) Sensor ground
circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
27
DRIVEABILITY - GAS
P0071-AMBIENT/BATTERY TEMP SENSOR PERFORMANCE —
Continued
TEST
ACTION
APPLICABILITY
7
Turn the ignition off.
Disconnect the Battery Temp Sensor harness connector.
Disconnect the PCM harness connectors.
Measure the resistance between ground and the (K25) Battery Temp Signal circuit.
Is the resistance below 100 ohms?
All
Yes
→ Repair the short to ground in the (K25) Battery Temp Signal
circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 8
8
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.
28
DRIVEABILITY - GAS
P0071-AMBIENT/BATTERY TEMP SENSOR PERFORMANCE —
Continued
Symptom:
P0107-MAP SENSOR VOLTAGE TOO LOW
When Monitored and Set Condition:
P0107-MAP SENSOR VOLTAGE TOO LOW
When Monitored:
With the engine RPM above 416 but less than 1500, the TPS voltage
less than 1.13 volts, and battery voltage greater than 10.4 volts.
Set Condition:
The MAP Sensor signal voltage is below 0.1 of a volt for 2.0 seconds with
the engine running.
POSSIBLE CAUSES
MAP SENSOR VOLTAGE BELOW 0.1 OF A VOLT
(K7) 5-VOLT SUPPLY CIRCUIT OPEN
(K7) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
MAP SENSOR
(K1) MAP SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
(K1) MAP SENSOR SIGNAL 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.
Start the engine.
With the DRBIII
t, read the MAP Sensor voltage.
Is the voltage below 0.1 of a 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 MAP Sensor harness connector.
Ignition on, engine not running.
Measure the voltage on the (K7) 5-volt Supply circuit at the MAP Sensor harness
connector.
Is the voltage between 4.5 to 5.2 volts?
All
Yes
→ Go To 3
No
→ Go To 6
29
DRIVEABILITY - GAS
TEST
ACTION
APPLICABILITY
3
With the DRBIII
t, monitor the MAP Sensor voltage with the Sensor still discon-
nected.
Is the voltage above 1.2 volts?
All
Yes
→ Replace the MAP Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 4
4
Turn the ignition off.
Disconnect the PCM harness connectors.
Measure the resistance between ground and the (K1) MAP Sensor Signal circuit at
the MAP Sensor harness connector.
Is the resistance below 100 ohms?
All
Yes
→ Repair the short to ground in the ( K1) MAP Sensor Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 5
5
Measure the resistance between the (K1) MAP Sensor Signal circuit and the (K900)
Sensor ground circuit at the MAP Sensor harness connector.
Is the resistance below 100 ohms?
All
Yes
→ Repair the short between the (K900) Sensor ground circuit and
the (K1) MAP Sensor Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→ Go To 8
6
Turn the ignition off.
Disconnect the PCM harness connectors.
Measure the resistance in the (K7) 5-volt Supply circuit from the MAP Sensor
harness connector to the PCM harness connector.
Is the resistance below 100 ohms?
All
Yes
→ Go To 7
No
→ Repair the open in the (K7) 5-volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
7
Measure the resistance between ground and the (K7) 5-volt Supply circuit at the
MAP Sensor harness connector.
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 - 5.
No
→ Go To 8
8
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.
30
DRIVEABILITY - GAS
P0107-MAP SENSOR VOLTAGE TOO LOW —
Continued
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