MTU 12 V 4000 L62FB Operating Instructions Manual page 112

511 – HIHI P-Charge Mix A
Red alarm. Engine shutdown.
Associated parameter 2.0181.932
Cause
Mixture pressure on A side too
high (limit value 2).
512 – HIHI P-Charge Mix B
Red alarm. Engine shutdown.
Associated parameter 2.0182.932
Cause
Mixture pressure on B side too
high (limit value 2).
513 – SD P-Coolant Diff
Red alarm.
Associated parameter 1.8004.610
Cause
Coolant differential pressure
sensor defective, short circuit or
wire break.
515 – AL Starter Not Engaged
Yellow alarm.
Associated parameter 2.1090.926
Cause
ECU does not detect engine
speed during starting sequence.
517 – SD P-Charge Mix before Throttle
Red alarm.
Associated parameter 1.8004.631
Cause
Mixture pressure sensor before
throttle defective, short circuit or
wire break.
112 | Troubleshooting | MS150098/02E 2016-11
Corrective action
1. Check emissions.
2. Check ignition timing (→ Page 140).
3. Check exhaust back pressure.
4. Check valve clearance (→ Page 141).
5. Check throttle.
6. Check mixture coolant system.
Corrective action
1. Check emissions.
2. Check ignition timing (→ Page 140).
3. Check exhaust back pressure.
4. Check valve clearance (→ Page 141).
5. Check throttle.
6. Check mixture coolant system.
Corrective action
u Check sensors and cabling (B16.1, B16.3), replace if necessary.
Fault is rectified following engine restart.
Corrective action
1. Check starter.
2. Check cabling.
3. Check speed sensor.
Corrective action
u Check sensor and cabling (B79.23), replace if necessary. Fault is
rectified following engine restart.