TEST
ACTION
APPLICABILITY
2
Turn the ignition off.
NOTE: Wait a minimum of 8 minutes to allow the O2 Sensor to cool down
before continuing the test. Allow the O2 Sensor voltage to stabilize between
0.4 to 0.6 volts.
Turn the ignition on.
With the DRBIII
t, actuate the O2 Heater Relay.
With the DRBIII
t, monitor O2 Sensor voltage for at least 2 minutes.
Does the voltage stay between 0.4 and 0.6 volts?
All
Yes
→ Go To 3
No
→ Go To 7
3
NOTE: Allow the O2 sensor to cool down to room temperature.
Turn the ignition off.
Disconnect the O2 Sensor harness connector.
Measure the resistance across the O2 Sensor Heater element component side.
NOTE: Heater Resistance Specification for 1/1 and 1/2 O2 Sensor is from 3 to
20 ohms.
Is the O2 Sensor Heater element within specification?
All
Yes
→ Go To 4
No
→ Replace the O2 Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.
4
Turn the ignition off.
Disconnect the O2 Sensor harness connector.
Measure the resistance between ground and the O2 Sensor Heater ground circuit in
the O2 Sensor harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 5
No
→ Repair the open O2 Sensor Heater ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.
5
Turn the ignition off.
Disconnect the O2 Sensor harness connector.
With the DRBIII
t, actuate the O2 Heater Test.
Measure the voltage of the ASD Relay Output circuit in the O2 Sensor harness
connector.
Is the voltage above 11.0 volts?
All
Yes
→ Go To 6
No
→ Repair the ASD Relay Output circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.
6
NOTE: Before Continuing: Disconnect the PCM harness connector and
check the related wiring 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 in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - 1.6L.
198
DRIVEABILITY - 1.6L GAS
P1135-1/1 O2 HEATER ELEMENT RESISTANCE OUT OF RANGE —
Continued