Output Check Diagnosis (Output Diagnostic Test Mode)
NOTE:
See ENTERING SELF-DIAGNOSTICS
for additional scan tool operating instructions.
- Ensure battery voltage and fuse No. 22 are okay. Ensure engine ground connections at cylinder head cover and manifold are okay.
- Data Link Connector (DLC) is located below tachometer. See Figure . Remove DLC cover. Ensure ignition is off. Connect scan tool to DLC. Scan tool should alternately display 1-RAPID DATA TRANSFER and 2-BLINK CODE OUTPUT.
- Turn ignition on, or start engine, depending on function being selected. See SELECTABLE FUNCTIONS table under ENTERING SELF-DIAGNOSTICS. Press "1" button to select RAPID DATA TRANSFER function.
- Press "0" and "3" buttons to select OUTPUT DIAGNOSTIC TEST MODE (DTM) function. Press "Q" button to enter input. OUTPUT DIAGNOSTIC TEST MODE will be displayed on scan tool.
- Output DTM actuates following components in sequence:
- Cold start injector.
- EGR valve.
- A/C compressor interruption.
- Fuel cut-off valve.
- Wastegate by-pass regulator valve.
- Glow plug rely.
- Glow plug indicator light.
- Coolant preheater relay (low heat output).
- Coolant preheater relay (high heat output).