Will not start after battery cable that goes to the fuse box touched another piece of metal

Good morning,

When you turn the key to the on position, does the check engine light come on?

Can you communicate with the ECM? There is a good chance that the voltage surge from the short damaged the ECM.

I attached a wiring diagram of the 2 powers required for the ECM. Check them for a test light or voltmeter.

https://www.2carpros.com/articles/how-to-check-wiring

Roy

Okay, good.

The 1406 is for the EGR valve. It has no connection to the fuel pump.

Toy may have a bad fuel pump. You need to do a pressure test to see what pressure the pump is sending.

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump

I attached a wiring diagram for you of the system. You will need a test light or voltmeter to do some testing.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Roy

Circuit Description

The PCM monitors the EGR valve pintle position input to ensure that the valve responds properly to commands from the PCM and to detect a malfunction if the pintle position sensor and control circuits are open or shorted. if the PCM detects a pintle position signal voltage outside the normal range of the pintle position sensor, or a signal voltage that is not within a tolerance considered acceptable for proper EGR system operation, the PCM will set DTC P1406.

Conditions for Setting the DTC

Ignition 1 voltage is greater than 10 volts.

EGR Feedback is less than 0.14 volt at any time.

OR

VIN 1 - EGR Feedback is 0.4 volt greater or less than the EGR Closed Valve Pintle Position when the Desired EGR Position is commanded to 0%.

VIN K - EGR Feedback is 0.2 volt greater or less than the EGR Closed Valve Pintle Position when the Desired EGR Position is commanded to 0%.

OR

Actual EGR Position is 30% greater or less than the Desired EGR Position.

Any of the above conditions are present for longer than 20 seconds.

Action Taken When the DTC Sets

The PCM will illuminate the Malfunction Indicator Lamp (MIL) during the second consecutive trip in which the diagnostic test has been run and failed.

The PCM will store conditions which were present when the DTC set as Freeze Frame and Fail Records data.

Conditions for Clearing the MIL/DTC

The PCM will turn the MIL OFF during the third consecutive trip in which the diagnostic has been run and passed.

The history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.

The DTC can be cleared by using the scan tool Clear Info function or by disconnecting the PCM battery feed.

Diagnostic Aids

Check for the following conditions:

Open EGR ignition filter circuit.
An open in the EGR ignition filter circuit will cause EGR Position Error to vary erratically while the EGR valve is operating. With the ignition ON, a test light should illuminate when connected between ground and the EGR ignition filter circuit at the PCM connector. If not, locate and repair the open in the EGR ignition filter circuit.

Excessive deposits on EGR valve pintle or seat.
Remove the EGR valve and check for deposits that may interfere with the EGR valve pintle extending completely or cause the pintle to stick.

Poor connection or damaged harness. Inspect the wiring harness for damage. If the harness appears to be OK, observe the Actual EGR position display on the scan tool while moving connectors and wiring harnesses related to the EGR valve. A change in the display will indicate the location of the malfunction.

Reviewing the Fail Records vehicle mileage since the diagnostic test last failed may help determine how often the condition that caused the DTC to be set.

Test Description

Number(s) below refer to the step number(s) on the Diagnostic Table:

2. Verifies that the malfunction is present.

4. The PCM contains a recirculation diode which filters the EGR ignition feed for the EGR valve. The recirculation diode is connected to the ignition filter (EGR ignition feed) circuit. If the ignition filter circuit is open, EGR actual position may be erratic when compared to EGR desired position. An open in the EGR ignition filter circuit will cause DTC P1406 to be set after an extended period of time.

5. If DTC P1406 will only set under certain conditions, the malfunction may be intermittent; refer to DTC P1406 Diagnostic Aids. If an intermittent wiring problem is not present, check for a poor connection at the PCM or the EGR valve. If the connections are OK and DTC P1406 continues to set, replace the EGR valve. Refer to EGR Valve.

32. This vehicle is equipped with a PCM which utilizes an Electrically Erasable Programmable Read Only Memory (EEPROM). When the PCM is being replaced, the new PCM must be programmed.