CHECK A CIRCUIT FOR A SHORT TO GROUND

1.	Turn the ignition off.

2.	Disconnect the wire harness connectors of the components that contain the circuit suspected as being shorted to ground.

NOTE: Check connectors - Clean/repair as necessary.

NOTE: Before checking the circuit for a short to ground, first measure the resistance between the two leads of the multimeter. Take this value and subtract it from the value recorded when measuring the resistance between ground and the circuit being checked. The leads of the meter can add up to or over 0.5 of an Ohm of resistance.

3.	With the component wire harness connectors disconnected, use a meter set to measure Ohms (Ω), and measure the resistance between the circuit and a known good ground.

4.	Use the negative lead of the meter and touch a known good ground.

5.	Use the positive lead of the meter and carefully probe the circuit suspecedt as having the short.

Is the resistance to ground below 10k Ohms ?

Yes

Repair the short to ground. Use the wiring application as a guide to follow the path of the circuit.
One way to help isolate the short is to disconnect any in-line connectors that the circuit being tested runs through and measure for the short again. If the short goes away, the short is on the other side of the in-line connector.

The circuit is not shorted to ground or the condition that originally caused the short may not be present at this time. Continue to measure the resistance, wiggle the wire harness and connectors while checking for an intermittent short.
Use the wiring application as a guide to trace the circuits and look for any in-line connectors where the short could occur intermittently.
Look for any chafed, pierced, pinched, or partially broken wires.
Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the related wire harness connectors.
Perform any Technical Service Bulletins (TSBs) that may apply.