P0458-EVAP PURGE SOLENOID CIRCUIT LOW
For a complete wiring diagram Refer to Section 8W
- When Monitored:
With the engine running and battery voltage greater than 10.4 volts.
- Set Condition:
The PCM detects that the Evap Purge Solenoid circuit voltage is below the minimum acceptable value.
| Possible Causes |
| INTERMITTENT DTC |
| (K52) EVAP PURGE CONTROL CIRCUIT SHORTED TO GROUND |
| (K52) EVAP PURGE CONTROL CIRCUIT OPEN OR HIGH RESISTANCE |
| (K70) EVAP PURGE RETURN CIRCUIT OPEN OR HIGH RESISTANCE |
| EVAP PURGE SOLENOID |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
Diagnostic Test
1. DTC IS ACTIVEStart the engine and allow it to reach normal operating temperature.
WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.
With the scan tool, select View DTCs.
Is the status Active for this DTC?
Yes
- Go to 2
No
- Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
2. (K70) EVAP PURGE RETURN CIRCUIT OPEN OR HIGH RESISTANCE
Turn the ignition off.
Disconnect the Evap Purge Solenoid connector.
Turn the ignition on.
Using a 12 volt test light connected to 12 volts, check the (K70) Evap Purge Return circuit in the Evap Purge Solenoid harness connector.
NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.
Is the test light illuminated and bright?
Yes
- Go to 3
No
- Repair the (K70) Evap Purge Return circuit for an open circuit or high resistance.
- Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).
3. (K52) EVAP PURGE CONTROL CIRCUIT SHORTED TO GROUND
Turn the ignition off.
Disconnect the Powertrain Control Module (PCM) connector.
Measure the resistance between ground and the (K52) Evap Purge Control circuit in the Evap Purge Solenoid harness connector.
Is the resistance below 100 ohms?
Yes
- Repair the (K52) Evap Purge Control circuit for a short to ground.
- Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).
No
- Go to 4
4. (K52) EVAP PURGE CONTROL CIRCUIT OPEN OR HIGH RESISTANCE
Measure the resistance of the (K52) Evap Purge Control circuit between the Evap Purge Solenoid harness connector and the Powertrain Control Module (PCM) harness connector.
Is the resistance below 5.0 ohms?
Yes
- Go to 5
No
- Repair the (K52) Evap Purge Control circuit for an open circuit or high resistance.
- Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).
5. EVAP PURGE SOLENOID
Connect the Powertrain Control Module (PCM) connector.
Turn the ignition on.
With the scan tool, actuate the Evap Purge Solenoid control to the ON (100%) position.
Using a 12 volt test light connected to ground, check the (K52) Evap Purge Control circuit in the Evap Purge Solenoid harness connector.
NOTE: The test light should be illuminated and bright with the control actuated ON (100%). Compare the brightness to that of a direct connection to the battery.
With the scan tool, actuate the Evap Purge Solenoid control to OFF (0%).
Using a 12 volt test light connected to 12 ground, check the (K52) Evap Purge Control circuit in the Evap Purge Solenoid harness connector.
NOTE: The test light should not be illuminated with the control actuated OFF (0%).
Is the test light illuminated and bright with the control actuated ON and not illuminated with the control actuated OFF?
Yes
- Replace the Evap Purge Solenoid in accordance with the Service Information.
- Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).
No
- Go to 6
6. POWERTRAIN CONTROL MODULE (PCM)
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Evap Purge Solenoid and the Powertrain Control Module (PCM).
Look for any chafed, pierced, pinched, or partially broken wires.
Look for broken, bent, pushed out or corroded terminals.
Refer to any Technical Service Bulletins that may apply.
Were any problems found?
Yes
- Repair as necessary.
- Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).
No
- Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information.
- Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).