P0592-S/C SWITCH 2 SIGNAL CIRCUIT VOLTAGE TOO LOW
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For a complete wiring diagram, refer to the Wiring Information.
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When Monitored:
With the ignition on.
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Set Condition:
The S/C Signal 2 voltage is below a calibrated threshold for 0.06 second.
Possible Causes |
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| (V72) S/C SIGNAL 2 CIRCUIT SHORTED TO THE (V937) S/C SWITCH RETURN CIRCUIT |
| (V72) S/C SIGNAL 2 CIRCUIT SHORTED TO GROUND |
| CLOCKSPRING |
| STEERING WHEEL JUMPER HARNESS |
| SPEED CONTROL SWITCH |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
| 1. | Ignition on, engine not running. |
| 2. | With the scan tool, Clear DTCs in the PCM. |
| 3. | Start the engine and test drive the vehicle. |
| 4. | During the test drive select each of the speed control switch positions. |
| 5. | With the scan tool, select View DTCs. |
Is the status Active for this DTC?
Yes
- Go To 2
No
- Perform the INTERMITTENT DTC diagnostic procedure. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
| 1. | Turn the ignition off. |
| 2. | Turn the ignition on, engine not running. |
| 3. | Disconnect the Speed Control Switch harness connector. |
| 4. | Measure the voltage of the (V72) S/C Signal 2 circuit at the Speed Control Switch harness connector. |
Does the (V72) S/C Signal 2 voltage read 5.0 Volts with the Speed Control Switch harness connector unplugged?
Yes
- Replace the Speed Control Switch in accordance with the service information.
- Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
No
- Go To 3
3. STEERING WHEEL JUMPER HARNESS
| 1. | Disconnect the Clockspring C8 harness connector. |
| 2. | Measure the voltage of the (V72) S/C Signal 2 circuit at the Clockspring terminal, not the harness connector. |
Does the (V72) S/C Signal 2 voltage read 5.0 Volts with the Clockspring C8 harness connector unplugged?
Yes
- Replace the Steering Wheel Jumper harness in accordance with the service information.
- Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
No
- Go To 4
| 1. | Disconnect the Clockspring C2 harness connector in accordance with the service information. |
| 2. | Measure the voltage of the (V72) S/C Signal 2 circuit at the Clockspring C2 harness connector. |
Does the (V72) S/C Signal 2 voltage read 5.0 Volts with the Clockspring C2 harness connector unplugged?
Yes
- Replace the Clockspring in accordance with the service information.
- Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
No
- Go To 5
5. CHECK FOR THE (V72) S/C SIGNAL 2 CIRCUIT SHORTED TO THE (V937) S/C SWITCH RETURN CIRCUIT
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| 1. | Turn the ignition off. |
| 2. | Measure the resistance between the (V72) S/C Signal 2 circuit and the (V937) S/C Switch Return circuit at the Clockspring C2 harness connector . |
Is the resistance above 10k Ohms?
Yes
- Go To 6
No
- Repair the short between the (V72) S/C Signal 2 circuit and the (V937) S/C Switch Return circuit in the wiring harness.
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Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM)
- Standard Procedure).
6. CHECK THE (V72) S/C SIGNAL 2 CIRCUIT FOR A SHORT TO GROUND
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| 1. | Measure the resistance between ground and the (V72) S/C Signal 2 circuit at the Clockspring C2 harness connector. |
Is the resistance above 10k Ohms?
Yes
- Go To 7
No
- Repair the (V72) S/C Signal 2 circuit for a short to ground.
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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 Speed Control Switch 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).