Checking wiring
-- Using a Multimeter, Check the following Automatic Glow Time Control Module -J179- electrical harness connector terminals for resistance, Refer to applicable wiring diagram for fuse location and number.
| Automatic Glow Time Control Module -J179- electrical harness connector terminals | Measure to: |
|---|---|
| 6 | Fuse, Refer to applicable wiring diagram for fuse location and number. |
| 7 | Engine Ground |
| 11 | Fuse, Refer to applicable wiring diagram for fuse location and number. |
Specified value: 1.5 Ω Max.
If the specified value was Not obtained:
-- Check the wiring connection for an open circuit, short circuit to Battery positive or Ground
-- Check the wiring connection for damage, corrosion, loose or broken terminals.
-- If necessary, repair the faulty wiring connection and replace any open fuses.
-- Go to Final procedures
If the specified value was obtained:
-- Go to Glow Plugs, Checking .
-- Using a Multimeter, Check the following Automatic Glow Time Control Module -J179- glow plug output voltage at T14 electrical harness connector terminals for Voltage, Refer to applicable wiring diagram for fuse location and number.
Ignition switched ON.
| T14 electrical harness connector terminal | Measure to: |
|---|---|
| 8 for Glow Plug 1 -Q10- | ground |
| 7 for Glow Plug 2 -Q11- | ground |
| 6 for Glow Plug 3 -Q12- | ground |
| 5 for Glow Plug 4 -Q13- | ground |
Specified value: About Battery Voltage
-- Switch the ignition Off.
If the specification was not obtained:
-- Check the glow plug or circuit for a short to voltage, open circuit or high resistance.
-- Replace the Automatic Glow Time Control Module -J179-.
If the specified value was obtained:
-- Check the wires for a short circuit to each other, a short to battery voltage, and a short to ground.
-- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
-- Repair as necessary.
-- Go to Final procedures
-- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
-- Repair as necessary.
Final procedures
After repair work, the following work steps must be performed in the following sequence:
- Check the DTC memory. Refer to DIAGNOSTIC MODE 03 - READ DTC MEMORY .
- If necessary, erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .
- If the DTC memory was erased, generate readiness code. Refer to READINESS CODE .