Output Test Mode

DESCRIPTION
The Output Test Mode (OTM) aids in servicing output actuators associated with the Powertrain Control Module (PCM). This mode allows the technician to energize and deenergize most of the system output actuators on command. When entering OTM, the outputs can be turned off and on without activating the fan control. The low and high speed fan control(s) may be turned on separately without energizing the other outputs.

As a safety precaution, Output Test Mode will default to its normal state after 10 minutes, after the vehicle is started or after cycling the key OFF then ON.

CAUTION: Safety must be observed when using Output Test Mode:
- When all outputs are on, the electric fuel pump is briefly energized, so make sure fuel system is intact and is not being serviced at this time.
- When low speed or high speed fan control(s) are turned ON, make sure fan blades are clear of any obstruction.

ACCESSING OUTPUT TEST MODE USING A GENERIC SCAN TOOL
A string of characters must be entered into the generic scan tool to perform Output Test Mode. The generic keystroke entry for this specific function is provided below. Also, refer to the scan tool manufacturer's instructions for additional information.

Enter the strings separately and in the order shown.

ALL OUTPUTS ON:

- 02,20,20,C41025,,9E00A1910003,16

- 03,22,20,C4103184,,9E00A1910004,AA

- 04,2A,20,C410B1002502,,9E00414C4C204F4E,36

ALL OUTPUTS OFF:

- 05,28,20,C4103284,,9E00414C4C204F4646,51

LOW SPEED FAN ON:

- 02,20,20,C41025,,9E00A1910003,16

- 03,22,20,C4103184,,9E00A1910004,AA

- 04,2A,20,C410B1002503,,9E004C4643204F4E,33

LOW SPEED FAN OFF:

- 05,28,20,C4103284,,9E0041404C204F4646,51

HIGH SPEED FAN ON:

- 02,20,20,C41025,,9E00A1910003,16

- 03,22,20,C4103184,,9E00A1910004,AA

- 04,2A,20,C410B1002504,,9E00484643204F4E,2F

HIGH SPEED FAN OFF:

- 05,28,20,C4 103284,, 9E00414C4C204F4646,51

NORMALLY ON OUTPUTS OFF:

- 02,20,20,C41025,,9E00A1910003,16

- 03,22,20,C4103184,,9E00A1910004,AA

- 04,2A,20,C410B1002501,,9E004F2F50204F4646,6C

RETURN TO NORMAL STATE:

- 05,28,20,C4103284,,9E00414C4C204F4646,51