17-12
P1268: EGR1 (warning lamp: 67)
P1272: EGR2 (warning lamp: 68)
P1273: EGR2 (warning lamp: 68)
P1277: EGR3 (warning lamp: 69)
Generation condition
Controller area network signal from exhaust gas recirculation electronic drive unit
indicating “magnetic valve (M/V-1) circuit shorted to power source” remains being
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
Generation condition
Controller area network signal from exhaust gas recirculation electronic drive unit
indicating “magnetic valve (M/V-2) 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-2) 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 A2: EGR2
Electrical equipment #530: Exhaust gas recirculation magnetic valve
Electric circuit diagram Exhaust gas recirculation magnetic valve system
Generation condition
Controller area network signal from exhaust gas recirculation electronic drive unit
indicating “magnetic valve (M/V-2) circuit shorted to power source” remains being
received for 2 seconds.
Recoverability
System recovers if controller area network signal from exhaust gas recirculation
electronic drive unit indicating “magnetic valve (M/V-2) 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 A2: EGR2
Electrical equipment #530: Exhaust gas recirculation magnetic valve
Electric circuit diagram Exhaust gas recirculation magnetic valve system
Generation condition
Controller area network signal from exhaust gas recirculation electronic drive unit
indicating “magnetic valve (M/V-3) 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-3) 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 A3: EGR3
Electrical equipment #530: Exhaust gas recirculation magnetic valve
Electric circuit diagram Exhaust gas recirculation magnetic valve system
EXHAUST GAS RECIRCULATION SYSTEM
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