P117

Circuit Description

This diagnostic test monitors the Shift 'A' and Shift 'B' outputs from the PCM and increments a counter when the output is different than what is commanded. When the counter reaches 10, Code 117 is set. If at any time before the counter reaches 10 the output is the same as what is commanded, the counter Will be reset to zero.

Test Condition(s)

1. Closed loop fuel control is enabled.

Failure Condition(s)

Shift 'A' or Shift 'B' output is different than what is commanded 10 consecutive times.

Action Taken

PCM turns 'ON' the 'SERVICE ENGINE SOON' MIL.

Notes on Fault Tree

1. Checking if Code P029 is also set because indicates a Shift 'B' solenoid problem.
2. Checking if Code P094 is also set because it indicates a Shift 'A' solenoid problem.
3. Checking which gear is selected when fault occurs to determine possible faults.
4. Checking for a short to voltage on CKT 581 or 1222 by looking at gear ratio at code set.
5. Checking CKT 750 and fuse 'D1' for an open.
6. Checking CKTs 750 and 581 or transaxle Shift A solenoid for an open.
7. Checking for a short to ground. If resistance is 1000 ohms or less, the short is inside the transaxle. If resistance is greater than 1000 ohms the short is between C129 and PCM.
8. Checking for a short to voltage on CKTs 582 or 1223 by looking at gear ratio at code set.
9. Checking CKT 750 and fuse 'D1' for an open.
10. Checking CKTs 750 and 582 or transaxle Shift 'B' solenoid for an open.
11. Checking for a short to ground. If resistance is 1000 ohms or less, the short is inside the transaxle. If resistance is greater than 1000 ohms the short is between 'C129' and PCM.
12. Checking if Shift A solenoid is functioning properly using PCM output and PCM status light.
13. Checking if Shift 'B' solenoid is functioning properly using PCM output and PCM status light.
14. Checking if PCM is receiving voltage.
15. Checking for an open or short to ground on CKT 750 outside of transaxle.
16. Checking CKTs 750 and 581 or Shift A solenoid for open.
17. Checking for a short to ground. If resistance is 1000 ohms or less, the short is inside the transaxle. if resistance is greater than 1000 ohms, the short is between 'C129' and the PCM,
18. Checking CKTs 750 and 582 or Shift 'B' solenoid for an open.
19. Checking for a short to ground. If resistance is 1000 ohms or less, the short is inside the transaxle. If resistance is greater than 1000 ohms, the short is between 'C129' and PCM.