When the enable conditions are satisfied the PCM checks that high and low outputs (voltage level) are observed when OCV’s are commanded. When an OCV output failure is detected, the appropriate fail counter is incremented. If the failure threshold exceeds 5 seconds during one diagnostic test (10 seconds), the test has failed and a P0086 DTC is stored.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Detects a short to battery | 1. Poor Connection 2. Short to battery in Control Circuit 3. OCV 4. PCM |
Enable Conditions |
•
No disabling Faults Present
•
Engine Running
•
Battery Voltage between 11V and 16V | |
Threshold value |
•
Short to battery | |
Diagnosis Time |
•
Continuous (More than 5 seconds failure for every 10 seconds test ) | |
MIL On Condition |
•
3 Driving Cycles |