[HUMTECH]

13
Test the HO2S heater low control circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
?
Go to <a id="s22_rev">Step 22
Go to <a id="s17_rev">Step 17
14
Test the HO2S heater low control circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
?
Go to <a id="s22_rev">Step 22
Go to <a id="s15_rev">Step 15
15
Test the HO2S heater low control circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
?
Go to <a id="s22_rev">Step 22
Go to <a id="s17_rev">Step 17
16
Test for shorted terminals and for poor connections at the HO2S. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
?
Go to <a id="s22_rev">Step 22
Go to <a id="s20_rev">Step 20
17
Test for shorted terminals and for poor connections at the PCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
?
Go to <a id="s22_rev">Step 22
Go to <a id="s21_rev">Step 21
18
Repair the circuit with high resistance. Refer to Wiring Repairs in Wiring Systems.
Did you complete the repair?
?
Go to <a id="s22_rev">Step 22
?
19
Repair the open or high resistance in the ignition 1 voltage circuit. Refer to Wiring Repairs in Wiring Systems.
Did you complete the repair?
?
Go to <a id="s22_rev">Step 22
?
20
Replace the affected HO2S. Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 or Heated Oxygen Sensor Replacement - Bank 2 Sensor 1.
Did you complete the replacement?
?
Go to <a id="s22_rev">Step 22
?
21
Replace the PCM. Refer to Powertrain Control Module Replacement.
Did you complete the replacement?
?
Go to <a id="s22_rev">Step 22
?
22
Were you sent to this diagnostic from DTC P0134 or P0154?
?
Go to Step 17 in DTC P0134 or P0154
Go to <a id="s23_rev">Step 23
23

1. Replace the O2A fuse if necessary.
2. Clear the DTCs with a scan tool.
3. Turn OFF the ignition for 30 seconds.
4. Start the engine.
5. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.

Did the DTC fail this ignition?
?
Go to <a id="s02_rev">Step 2
Go to <a id="s24_rev">Step 24
24
Observe the Capture Info with a scan tool.
Are there any DTCs that have not been diagnosed?
?
Go to Diagnostic Trouble Code (DTC) List
System OK