17
17-11
3. Inspections Based on Diagnosis Codes
3.1 Diagnosis code list
• Diagnosis codes shown by the Multi-Use Tester and those indicated by warning lamp display are different.
• The Multi-Use Tester is capable of showing more detailed diagnosis codes.
3.2 Diagnosis code generation conditions and inspection items
P0112: INT Air Temp SNSR (Low) (warning lamp flashes: 44)
P0113: INT Air Temp SNSR (High) (warning lamp flashes: 44)
P1267: EGR1 (warning lamp: 67)
Code Message
Warning lamp indication
Flashes Red Orange
P0112 INT Air Temp SNSR (Low) 44 – O
P0113 INT Air Temp SNSR (High) 44 – O
P1267 EGR 1 67 – O
P1268 EGR 1 67 – O
P1272 EGR 2 68 – O
P1273 EGR 2 68 – O
P1277 EGR 3 69 – O
P1278 EGR 3 69 – O
P1625 EDU Relay 84 – O
P1630 CAN (EGR 1) 95 – O
Generation condition Intake air temperature sensor 1 voltage remains lower than 0.15 V for 3 seconds.
Recoverability
System recovers if intake air temperature sensor 1 voltage remains higher than
0.15 V for 1 second.
Control effected by electronic control unit Carries out control using a backup value (25°C).
Inspection
Service data 2B: Intake Air Temperature
Electronic control unit connector : Intake air temperature sensor 1
Electrical equipment #305: Intake air temperature sensor
Electric circuit diagram Intake air temperature sensor 1 system
Generation condition
Intake air temperature sensor 1 voltage remains higher than 4.85 V for 3 sec-
onds.
Recoverability
System recovers if intake air temperature sensor 1 voltage remains lower than
4.85 V for 1 second.
Control effected by electronic control unit Carries out control using a backup value (25°C).
Inspection
Service data 2B: Intake Air Temperature
Electronic control unit connector : Intake air temperature sensor 1
Electrical equipment #305: Intake air temperature sensor
Electric circuit diagram Intake air temperature sensor 1 system
Generation condition
Controller area network signal from exhaust gas recirculation electronic drive unit
indicating “magnetic valve (M/V-1) circuit shorted to ground or open” remains be-
ing received for 2 seconds.
Recoverability
System recovers if controller area network signal from exhaust gas recirculation
electronic drive unit indicating “magnetic valve (M/V-1) is normal” remains being
received for 1 second.
Control effected by electronic control unit Exhaust gas recirculation control is stopped.
Inspection
Service data 20: Actual EGR Position
Actuator test A1: EGR1
Electrical equipment #530: Exhaust gas recirculation magnetic valve
Electric circuit diagram Exhaust gas recirculation magnetic valve system
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