P152F-ENGINE HOOD SWITCH 2 / ENGINE HOOD SWITCH 1 CORRELATION
For a complete wiring diagram, refer to the Wiring Information.
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When Monitored:
This monitor runs when there is vehicle movement between 2 MPH (3 KPH) and 4 MPH (6 KPH) or in Auto-Stop mode. Monitor is disabled when vehicle is low range.
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Set Condition:
The Powertrain Control Module (PCM) detects Engine Hood Switch 1 state and Engine Hood Switch 2 state do not match. Auto-Stop and Auto Start will be disabled.
Possible Causes |
|---|
| HOOD NOT SECURED PROPERLY |
| (K806) ENGINE HOOD SWITCH 2 SIGNAL CIRCUIT SHORTED TO VOLTAGE |
| (K806) ENGINE HOOD SWITCH 2 SIGNAL CIRCUIT SHORTED TO GROUND |
| DEFECTIVE OR STICKING ENGINE HOOD SWITCH 1 |
| DEFECTIVE OR STICKING ENGINE HOOD SWITCH 2 |
| TOTALLY INTEGRATED POWER MODULE (TIPM) |
| POWERTRAIN CONTROL MODULE (PCM) |
| NOTE: | If there are any other Engine Hood Switch DTCs present in the PCM or TIPM, diagnose those DTCs before proceeding with this test procedure. |
| 1. | Turn the ignition on. |
| 2. | With the scan tool, view PCM DTCs. |
Is the DTC active?
Yes
- Go To 2
No
- Perform the INTERMITTENT DTC diagnostic procedure. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
| 1. | Visually check to make sure the Hood is secured properly. |
Is the Hood properly secured?
Yes
- Go To 2
No
- Secure the Hood properly.
- Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
3. CHECK THE (K806) ENGINE HOOD SWITCH 2 SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE
 |
| 1. | Turn the ignition off. |
| 2. | Disconnect the Engine Hood Switch 2 harness connector. |
| 3. | Turn the ignition on. |
| 4. | Measure the voltage on the (K806) Engine Hood Switch 2 Signal circuit at the Engine Hood Switch 2 harness connector. |
Does the voltage measure above 5.2 Volts?
Yes
- Repair the (K806) Engine Hood Switch 2 Signal circuit for a short to voltage.
- Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
No
- Go To 4
4. CHECK THE (K806) ENGINE HOOD SWITCH 2 SIGNAL CIRCUIT FOR A SHORT TO GROUND
 |
| 1. | Turn the ignition off. |
| 2. | Disconnect the PCM C1 harness connector. |
| 3. | Measure the resistance between ground and the (K806) Engine Hood Switch 2 Signal circuit at the Engine Hood Switch 2 harness connector. |
Does the resistance above 10k Ohms?
Yes
- Go To 5
No
- Repair the (K806) Engine Hood Switch 2 Signal circuit for a short to ground.
- Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
| 1. | Replace Engine Hood Switch 2. |
| 2. | Reconnect the PCM C1 harness connector. |
| 3. | With the scan tool, erase PCM DTCs. |
| 4. | Test drive the vehicle in Stop/Start mode. |
| 5. | With the scan tool, select view PCM DTCs. |
Did the DTC return?
Yes
- Go To 6
No
- Repair complete.
- Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
| 1. | Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Engine Hood Switch 2 and the Powertrain Control Module. |
| 2. | Look for any chafed, pierced, pinched, or partially broken wires. |
| 3. | Look for broken, bent, pushed out or corroded terminals. |
| 4. | Perform any Technical Service Bulletins that may apply. |
Were any problems found?
Yes
- Repair as necessary.
- Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
No
- Replace the Powertrain Control Module in accordance with the service information.
- Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).