212
TROUBLESHOOTING
3. Check temperature sensor readings
20) Inspect Engine Oil Pan Heater
[ Unit with drain heater kit only ]
1. Check heater output
1) Select "Actuators output condition/individual actuating (code No. 20)" in the check mode of the board mainte-
nance functions. Then turn ON "Engine oil pan heater".
1) Check outside air temperature and engine compart-
ment temperature with the monitor mode of the
board maintenance functions.
2) Measure actual temperature with a thermometer,
and check for the sensor reading's extreme devia-
tion from the actual temperature.
3) Measure each sensor's resistance value at the
terminals on the main PCB, and check for extreme
deviation from the standard value.
Code No.
Outside air temperature No. 4d
Engine compartment
temperature
No. 50
Measure point (on main PCB)
Outside air temperature CN6[9]-[10]
Engine compartment
temperature
CN6[13]-[14]
Temperature Standard resistance value
14 ℉ (-10 ℃ )23.7 kΩ
32 ℉ (0 ℃ )15.0 kΩ
50 (10 ℃ ) 9.8 kΩ
68 ℉ (20 ℃ ) 6.5 kΩ
86 ℉ (30 ℃ ) 4.4 kΩ
104 ℉ (40 ℃ ) 3.1 kΩ
122 ℉ (50 ℃ ) 2.2 kΩ
2) Measure the voltage between both ends of the
connector with the heater connected, and check
that 200 V DC is applied.
3) Select "Actuators output condition/individual
actuating (code No. 20)" in the check mode of
the board maintenance functions. Then turn OFF
"Engine oil pan heater".
4) Measure the voltage between both ends of the
connector with the heater connected, and check
the voltage is 0 V.
2. Check heater resistance value
Disconnect the heater connector and check the
resistance between both ends of the connector.
Standard
resistance value
833 Ω (per 1 piece)
Engine oil pan heater
Measure point
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