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P1004






P1004-SHORT RUNNER VALVE CONTROL PERFORMANCE







- When Monitored:
With the engine run time above a calibrated value, battery voltage greater than 10.4 volts, ECT within a specific range, and the Short Runner Valve Assembly control active.

- Set Condition:
This PCM compares the circuit feedback to a calibrated closed range when the circuit is de-energized or to a calibrated open range when the circuit is energized. If the value is determined to be out of the calibrated range in either the de-energized or energized state for more than a calibrated amount of time, this DTC will set.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.Pre-Diagnostic Troubleshooting Procedure

1. DTC IS ACTIVE
1. Turn the ignition on.
2. With the scan tool, Clear DTCs in the Powertrain Control Module (PCM).
3. With the scan tool, actuate the SRV Solenoid Control State.
4. With the scan tool, select View DTCs.

Is the DTC Active at this time?

Yes

- Go to 2

No

- Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. Checking for an Intermittent DTC

2. (F343) ASD RELAY OUTPUT CIRCUIT OPEN OR HIGH RESISTANCE




1. Turn the ignition off.
2. Disconnect the Short Runner Valve Assembly harness connector.
3. Turn the ignition on.
4. With the scan tool, actuate the Auto Shutdown (ASD) Relay Control State.
5. Using a 12 volt test light connected to ground, check the (F343) ASD Relay Output circuit in the Short Runner Valve Assembly 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 open or high resistance in the (F343) ASD Relay Output circuit.
- Perform the PCM Verification Test. PCM Verification Test

3. (K236) SRV CONTROL CIRCUIT SHORTED TO GROUND




1. Turn the ignition off.
2. Disconnect the C1 Powertrain Control Module (PCM) harness connector.
3. Measure the resistance between ground and the (K236) SRV Control circuit in the Short Runner Valve Assembly harness connector.

Is the resistance above 100 ohms?

Yes

- Go to 4

No

- Repair the short to ground in the (K236) SRV Control circuit.
- Perform the PCM Verification Test. PCM Verification Test

4. (K236) SRV CONTROL CIRCUIT OPEN OR HIGH RESISTANCE





CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals, resulting in poor terminal to pin connection. Install PCM Pinout Box 8815 to perform diagnosis.

1. Measure the resistance of the (K236) SRV Control circuit between the Short Runner Valve Assembly harness connector and the appropriate terminal of special tool #8815.

Is the resistance below 5.0 ohms?

Yes

- Go to 5

No

- Repair the open or high resistance in the (K236) SRV Control circuit.
- Perform the PCM Verification Test. PCM Verification Test

5. SHORT RUNNER VALVE ASSEMBLY




1. Connect the C1 Powertrain Control Module (PCM) harness connector.
2. Turn the ignition on.
3. With the scan tool, actuate the SRV Solenoid Control State to toggle.
4. Using a 12 volt test light connected to 12 volts, check the (K236) SRV Control circuit in the Short Runner Valve Assembly harness connector.

NOTE: If the DTC is active, the actuation test may not be allowed by the PCM. If may be necessary to clear the DTCs before starting the actuation.

NOTE: The test light should illuminate on and off with the actuation.

Does the test light illuminate on and off with the actuation?

Yes

- Verify that there is good pin to terminal contact in the Short Runner Valve Assembly and Powertrain Control Module connectors. If OK, replace the Short Runner Valve Assembly.
- Perform the PCM Verification Test. PCM Verification Test

No

- Go to 6

6. POWERTRAIN CONTROL MODULE (PCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Short Runner Valve Assembly and the Powertrain Control Module (PCM).
2. Look for any chafed, pierced, pinched, or partially broken wires.
3. Verify that there is good pin to terminal contact in the Short Runner Valve Assembly and Powertrain Control Module connectors.
4. Look for broken, bent, pushed out or corroded terminals.
5. Search for any Technical Service Bulletins that may apply.

Were any problems found?

Yes

- Repair as necessary.
- Perform the PCM Verification Test. PCM Verification Test

No

- Replace and program the Powertrain Control Module (PCM).
- Perform the PCM Verification Test. PCM Verification Test

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