Pre-Heating System (W/O Glow Plug Controller) On-Vehicle Inspection

Engine Hybrid System. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

1Kd-Ftv Starting. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

INSPECT ILLUMINATION DURATION OF GLOW INDICATOR LIGHT
INSPECT PRE-HEATING
INSPECT AFTER GLOW TIME

Pre-Heating System (W/O Glow Plug Controller) -- On-Vehicle Inspection

1. INSPECT ILLUMINATION DURATION OF GLOW INDICATOR LIGHT

Inspect the light illumination duration.

Text in Illustration
*a
Light Illumination Duration
*b
Engine Coolant Temperature
1. Turn the ignition switch to ON, and then measure the light illumination duration.
  Light illumination duration:
  Refer to the graph.
2. Turn the ignition switch off.
  1. If the result is not as specified, inspect the ECM, engine coolant temperature sensor, glow plug and glow relay.
  HINT:
  Actual light illumination duration may vary slightly from the graph.

2. INSPECT PRE-HEATING

Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.1Kd-Ftv Starting.Starting System.Pre-Heating System (W/O Glow Plug Controller) On-Vehicle Inspection

Inspect the pre-heating time.
Text in Illustration
*a
Pre-heating Time
*b
Battery Voltage
1. Turn the ignition switch to ON. Measure how long it takes for battery voltage to be applied to the glow plugs.
  Standard Time:
  Engine Coolant Temperature
  Pre-heating Time
  40°C (104°F) or higher
  1 second
  below 40°C (104°F)
  Refer to the graph
  (maximum: 15 seconds)
2. Turn the ignition switch off.
  1. If the result is not as specified, inspect the ECM, engine coolant temperature sensor, glow plug and glow relay.

Turn the ignition switch to START. Check that battery voltage is applied to the glow plugs.

While cranking the engine, measure how long it takes for battery voltage to be applied to the glow plugs.
Standard Time:
Engine Coolant Temperature
Pre-heating Time
40°C (104°F) or higher
1 second
below 40°C (104°F)
Refer to the graph
(maximum: 15 seconds)
1. If the result is not as specified, inspect the ECM, engine coolant temperature sensor, glow plug and glow relay.

3. INSPECT AFTER GLOW TIME

Inspect the afterglow time.

Text in Illustration
*a
Component with harness connected (ECM)
*b
After Glow Time
*c
Engine Coolant Temperature
-
-
1. After the engine starts, measure how long it takes for battery voltage to be applied to terminals G39-15 (GREL) and C23-7 (E1) of the ECM.
  Standard Time:
  Tester Connection
  Specified Condition
  G39-15 (GREL) - C23-7 (E1)
  Refer to the graph
  1. If the result is not as specified, inspect the ECM, engine coolant temperature sensor, glow plug and glow relay.