Dodge Viper SRT-10 (ZB). Manual — part 415

POSSIBLE CAUSES

HEATER CONTROL CIRCUIT SHORTED TO GROUND

HEATER GROUND CIRCUIT OPEN

PCM

TEST

ACTION

APPLICABILITY

1

Turn the ignition off.
NOTE: Wait a minimum of 8 minutes to allow the O2 Sensor to cool down
before continuing the test.
Ignition on, engine not running.
With the DRBIII

t, actuate the O2 Heater Test.

With the DRBIII

t, monitor O2 Sensor voltage for at least 2 minutes.

Does the voltage stabilize between 0.1 and 0.3 of a volt during the Heater test?

All

Yes

→ Refer to the INTERMITTENT CONDITION Symptom (Diagnos-

tic Procedure).
Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 2

2

Turn the ignition off.
NOTE: Allow the O2 Sensor to cool to room temperature.
Disconnect the O2 Sensor harness connector.
Measure the resistance across the O2 Sensor Heater element component side.
NOTE: The resistance value will increase with warmer temperatures.
On a four O2 Sensor system the resistance value for 1/1 and 2/1 O2 Heater elements
is between 3.3 and 4.1 ohms and the 1/2 and 2/2 O2 Heater elements is between 4.0
and 5.0 ohms at 70° F(21.1°C).
Is the resistance within the listed specifications?

All

Yes

→ Go To 3

No

→ Replace the O2 Sensor.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

3

NOTE: The O2 Heater Supply circuit may be a fused (K342) ASD Relay
Output or an O2 Sensor (A242) Heater Relay Output, depending on the O2
Sensor being tested.
Ignition on, engine not running and the O2 Sensor still disconnected.
With the DRBIII

t, actuate the O2 Heater Test.

Using a 12-volt test light connected to ground, probe the (K342) Fused ASD Relay
Output or (A242) O2 Heater Relay Output circuit at the O2 Sensor harness
connector..
Does the light illuminate brightly?

All

Yes

→ Go To 4

No

→ Repair the open in the (A342) Fused ASD Relay Output circuit or

the (A242) O2 Heater Relay Output circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

67

DRIVEABILITY - GAS

P0135-O2 SENSOR 1/1 HEATER FAILURE —

Continued

TEST

ACTION

APPLICABILITY

4

Turn the ignition off.
Disconnect the PCM harness connectors.
Remove the O2 Heater Relay, if it applies to the O2 Sensor being tested.
* Measure the resistance of the O2 Heater Control circuit (PWM) from the O2 Sensor
to the PCM harness connector if it applies to the O2 Sensor being tested.
OR
* Measure the resistance of the (K512) O2 Heater Relay Control circuit from the O2
Heater Relay to the PCM harness connector, if it applies to the O2 Sensor being
tested.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 5

No

→ Repair the excessive resistance in the O2 Heater Control circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

5

NOTE: Before beginning this test, verify what type of Heated O2 Sensor is
being tested, either the PWM Heated O2 Sensor or the Heater Relay
controlled Heated O2 Sensor.
* Measure the resistance between ground and the O2 Heater Control (PWM) circuit
if it applies to the O2 Sensor being tested.
OR
* Measure the resistance between ground and the (K512) O2 Heater Relay Control
circuit at the PCM harness connector.
Is the resistance below 100 ohms?

All

Yes

→ Repair the short to ground in the O2 Heater Control circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 6

6

NOTE: If the O2 Sensor being tested does not use an O2 Heater Relay to
supply voltage to the O2 Sensor Heater, answer YES to this test and
continue.
Using a 12-volt test light connected to 12-volts, probe the (Z1) O2 Heater Ground
circuit.
Does the test light illuminate brightly?

All

Yes

→ Go To 7

No

→ Repair the open in the (Z1) O2 Sensor Heater ground circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

7

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.

68

DRIVEABILITY - GAS

P0135-O2 SENSOR 1/1 HEATER FAILURE —

Continued

Symptom:

P0136-O2 SENSOR 1/2 HEATER CIRCUIT MALFUNCTION

When Monitored and Set Condition:

P0136-O2 SENSOR 1/2 HEATER CIRCUIT MALFUNCTION

When Monitored:

Ignition ON, with battery voltage greater than 10.4 volts.

Set Condition:

The state of the PCM relay control circuit, between the PCM and relay

coil, does not match the desired state.

POSSIBLE CAUSES

GOOD TRIP EQUAL TO ZERO

O2 SENSOR HEATER RELAY

(K342) FUSED ASD RELAY OUTPUT CIRCUIT

(K512) O2 HEATER RELAY CONTROL CIRCUIT OPEN

(K512) O2 HEATER RELAY CONTROL CIRCUIT SHORTED TO GROUND

PCM

TEST

ACTION

APPLICABILITY

1

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

No

→ Refer to the INTERMITTENT CONDITION Symptom (Diagnos-

tic Procedure).
Perform POWERTRAIN VERIFICATION TEST VER - 5.

2

Turn the ignition off.
Remove the Heater Relay from the PDC.
Measurement is taken at the Heater Relay component.
Measure the resistance of the O2 Sensor Heater Relay Coil.
Is the resistance above 100 ohms?

All

Yes

→ Replace the O2 Sensor Heater Relay.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 3

3

Ignition on, engine not running.
With the DRBIII

t, actuate the ASD Relay.

Using a 12-volt test light connected to ground, probe the (K342) Fused ASD Relay
Output circuit of the O2 Heater Relay in the PDC.
Does the test light illuminate brightly when the relay actuates?

All

Yes

→ Go To 4

No

→ Repair the open or short to ground in the (K342) ASD Relay

Output circuit. Inspect the related fuse and repair as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

69

DRIVEABILITY - GAS

TEST

ACTION

APPLICABILITY

4

Turn the ignition off.
Disconnect the PCM harness connectors.
Measure the resistance of the (K512) O2 Heater Relay Control circuit from the PDC
(Heater Relay) connector to the PCM harness connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 5

No

→ Repair the open in the (K512) O2 Heater Relay Control circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

5

Measure the resistance between ground and the (K512) O2 Heater Relay Control
circuit at the PDC connector.
Is the resistance below 100 ohms?

All

Yes

→ Repair the short to ground in the (K512) O2 Sensor Heater Relay

Control circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 6

6

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 not possible causes remaining, view repair.

All

Repair

Replace and program the Powertrain Control Module per Service
Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

70

DRIVEABILITY - GAS

P0136-O2 SENSOR 1/2 HEATER CIRCUIT MALFUNCTION —

Continued