Pto Adjustment Resistor (High) Troubleshooting; Injector Circuit Troubleshooting; Common Rail Pressure M/V Troubleshooting - Mitsubishi 6M70 Workshop Manual

P1177: PTO Adjustment Resistor (High) (warning lamp flashes: 62)
Generation condition
Recoverability
Control effected by electronic control unit
Service data
Electronic control unit connector
Inspection
Electrical equipment
Electric circuit diagram
P1200: Injector Circuit 2 (warning lamp flashes: 82)
Generation condition
Recoverability
Control effected by electronic control unit
Actuator test
Electronic control unit connector
Inspection
Electrical equipment
Electric circuit diagram
P1251: Common Rail Pressure M/V 1 (warning lamp flashes: 63)
Generation condition
Recoverability
Control effected by electronic control unit
Actuator test
Electronic control unit connector
Inspection
Electrical equipment
Electric circuit diagram
P1253: Common Rail Pressure M/V 2 (warning lamp flashes: 63)
Generation condition
Recoverability
Control effected by electronic control unit
Actuator test
Electronic control unit connector
Inspection
Electrical equipment
Electric circuit diagram
Power take-off resistor voltage remains higher than 4.8 V for 3 seconds when
governor control switch is ON.
System recovers when power take-off resistor voltage remains 4.8 V or less for 1
second when governor control switch is ON.
Control is effected using backup value (not resistor).
36: PTO Adjustment Resistor No.
: Power take-off resistor
13
#828: Power take-off resistor
Power take-off resistor system
Injector circuit 2 (No. 4, 5 or 6 cylinder) is short-circuited, open-circuited, or over-
loaded.
System recovers (power is re-supplied to electronic control unit) if signal becomes
normal when starter switch is turned OFF (2 minutes or more) → ON.
• Injector magnetic valve (No. 4, 5 or 6 cylinder) control is stopped. (Output is
reduced due to three-cylinder operation, and exhaust emissions worsen.)
• Exhaust gas recirculation control is stopped.
• Auto cruise control is stopped.
• Turbocharger control is stopped.
• Actuator tests "B9: Fuel Leak Check, BB to C0: Injector Test, BA: VGT Test"
are stopped.
BE: Injector Test 4, BF: Injector Test 5
C0: Injector Test 6
05 : Injector magnetic valve
#582: Injector magnetic valve
Injector magnetic valve (No. 4, 5 or 6 cylinder) system
Current flowing to MPROP1 (rail pressure control valve) remains above the spec-
ified value for 0.3 second.
System recovers (power is re-supplied to electronic control unit) if signal becomes
normal when starter switch is turned OFF (2 minutes or more) → ON.
• Injection quantity is limited. (Output is reduced, and exhaust emissions wors-
en.)
• Exhaust gas recirculation control is stopped.
• Auto cruise control is stopped.
B9: Fuel Leak Check
14 : MPROP1 (rail pressure control valve)
#574: MPROP1 (rail pressure control valve)
MPROP1 (rail pressure control valve) system
Current flowing to MPROP2 (rail pressure control valve) remains above the spec-
ified value for 0.3 second.
System recovers (power is re-supplied to electronic control unit) if signal becomes
normal when starter switch is turned OFF (2 minutes or more) → ON.
• Injection quantity is limited. (Output is reduced, and exhaust emissions wors-
en.)
• Exhaust gas recirculation control is stopped.
• Auto cruise control is stopped.
B9: Fuel Leak Check
: MPROP2 (rail pressure control valve)
14
#574: MPROP2 (rail pressure control valve)
MPROP2 (rail pressure control valve) system
13
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