Ignition Off Draw (IOD) Tests

High battery current draw with the ignition switch in the OFF position will discharge a battery After a dead battery is serviced the vehicle Ignition Off Draw (IOD) should be checked. To determine if a high current draw condition exists then check the vehicle with a multi-meter on the Milliampere Scale.
1. Verify all electrical accessories are OFF:
- Remove key from ignition switch
- Turn off all lamps
- Trunk compartment, ensure that the trunk compartment lamp is off when the trunk lid is closed
- Engine compartment, ensure that the hood lamp is off when hood is closed.
- Glove box, ensure that the glove box compartment lamp is off when the door is closed
- All doors are closed
- Sun visor vanity lamps are OFF
- Allow the Illuminated Entry System to time out in approximately 30 seconds, if equipped.

Disconnect Battery Cable At Shock Tower:

2. Disconnect battery negative remote cable.

CAUTION: Always disconnect the milliampere meter before opening a door.

3. Using an multi-meter, that has least a milliampere range of 200 mA. Set meter to the highest mA range.

Ignition Off Draw Test:

a. Connect it between the battery negative remote terminal and the battery negative remote stud.
b. If the reading is less than 30 milliamperes, system is OK.
c. If the reading is more than 30 milliamperes, go to High Milliampere Reading.
4. Each time the milliampere meter is disconnected and connected, all electronic timer functions will be activated for approximately one minute.

High Milliampere Reading
There is either a short circuit or a fault in an electronic module. There are seven fuses in the Power Distribution Center and Junction Block that feed the modules with ignition off draw.

Ensure that all electronic timer functions are timed out, before testing any of the components.
In The Power Distribution Center
- Automatic Transmission Control Module (20 Amp)
- Power Control Module (20 Amp)
- Hazard Flasher (20 Amp)

In The Junction Block:
- Canadian Daytime Running Lamps (DRL) (20 Amp)
- Optional Audio Power Amplifier (20 Amp)
- Interior lamps (10 Amp)
- Instrument Cluster (20 Amp)

CAUTION: Always disconnect the milliampere meter before opening a door.

1. Remove all seven fuses. By removing these fuses all ignition off draw from the vehicle electronics will be disconnected. There should be no reading on the milliampere meter. If no reading go to Step 2. If a reading there is a short circuit.
2. Install the Daytime Running Lamp (DRL) fuse, if equipped. If meter has no reading go to Step 4. If there is a reading go to Step 3.
3. Disconnect the DRL module.
a. If meter has no reading, replace the DRL module.
b. If meter has a reading, there is a short circuit in the L25 circuit.
4. Install the Power Amplifier fuse. If meter has no reading go to Step 6. If there is a reading go to Step 5.
5. Disconnect the Power Amplifier.
a. If meter has no reading, replace the Power Amplifier.
b. If meter has a reading, there is a short circuit in the F30 circuit.
6. Install the Interior Lamp fuse. If meter has no reading go to Step 7. If there is a reading go to Step 1.
a. Disconnect the Radio.
I. If meter has no reading, replace the Radio.
II. If meter has a reading, go to Step 2.
b. Disconnect the Power Sun Roof Module by disconnecting the headliner connector. The connector is located on the back of Junction Block below the fuses.
I. If meter has no reading, replace the Sun Roof Module.
II. If meter has a reading, go to Step 3.
c. Disconnect Body Control Module.
I. If meter has no reading, replace the Body Control Module.
II. If test lamp does not go out, there is a short circuit in the M1 circuit.
7. Install the Automatic Transmission Control Module fuse. If meter has no reading go to Step 9. If there is a reading go to Step 8.
8. Disconnect the Automatic Transmission Control Module.
a. If meter has no reading, replace the Automatic Transmission Control Module.
b. If meter has a reading, there is a short circuit in the A14 circuit.
9. Install the Powertrain Control Module fuse. If meter has no reading go to Step 11. If there is a reading go to Step 10.
10. Disconnect the Powertrain Control Module.
a. If meter has no reading, replace the Powertrain Control Module
b. If meter has a reading, there is a short circuit in the A14 circuit.
11. Install the Instrument Cluster fuse. If meter has no reading go to Step 13. If there is a reading go to Step 12.
12. Disconnect the Instrument Cluster.
a. If meter has no reading, replace the Instrument Cluster.
b. If meter has a reading, there is a short circuit in the F33 circuit.
13. Install the Hazard Flasher fuse. If meter has no reading there is no Ignition Off Draw. If there is a reading go to Step 14.
14. Disconnect the Hazard Flasher.
a. If meter has no reading, replace the Hazard Flasher.
b. If meter has a reading, there is a short circuit in the A15 circuit.