79
SYSTEM ANALYSIS
EMM LED INDICATORS
5
Running
When the outbo ard is runn ing, all of the LEDs
should be off. If a light is on, check for:
LED 1 – CHARGING FAULT:
• Code 17 – System voltage (55 V) below range
• Code 18 – System voltage (55 V) above range
• Code 26 – Low battery (12 V) voltage
• Code 27 – High battery (12 V) voltage
• Code 77– SAC circuit fault
LED 2 – INJECTOR/IGNITION FAULT:
• Code 51 – No. 1 injector circuit open
• Code 52 – No. 2 injector circuit open
• Code 53 – No. 3 injector circuit open
• Code 54 – No. 4 injector circuit open
• Code 55 – No. 5 injector circuit open
• Code 56 – No. 6 injector circuit open
• Code 61 – No. 1 injector circuit short
• Code 62 – No. 2 injector circuit short
• Code 63 – No. 3 injector circuit short
• Code 64 – No. 4 injector circuit short
• Code 65 – No. 5 injector circuit short
• Code 66 – No. 6 injector circuit short
• Code 81 – No. 1 ignition coil circuit open
• Code 82 – No. 2 ignition coil circuit open
• Code 83 – No. 3 ignition coil circuit open
• Code 84 – No. 4 ignition coil circuit open
• Code 85 – No. 5 ignition coil circuit open
• Code 86 – No. 6 ignition coil circuit open
• Code 91 – Fuel pump circuit open
• Code 92 – Exhaust valve circuit open
• Code 94 – Fuel pump circuit short
• Code 101 – No. 1 ignition timing circuit shorted
• Code 102 – No. 2 ignition timing circuit shorted
• Code 103 – No. 3 ignition timing circuit shorted
• Code 104 – No. 4 ignition timing circuit shorted
• Code 105 – No. 5 ignition timing circuit shorted
• Code 106 – No. 6 ignition timing circuit shorted
LED 3 – Sensor circuits (5 V), “SENSOR FAULT.”
For LIGHT ON, check for possible fault codes:
• Code 1 – No. 1 cylinder excessive knock
• Code 2 – No. 2 cylinder excessive knock
• Code 3 – No. 3 cylinder excessive knock
• Code 4 – No. 4 cylinder excessive knock
• Code 5 – No. 5 cylinder excessive knock
• Code 6 – No. 6 cylinder excessive knock
• Code 7 – PORT Knock sensor circuit fault
• Code 8 – STBD Knock sensor circuit fault
• Code 12 – TPS circuit fault
• Code 13 – TPS below expected range
• Code 14 – TPS above expected range
• Code 16 – CPS, intermittent loss of sync
• Code 23 – EMM temp. sensor circuit fault
• Code 24 – EMM temp. below expected range
• Code 28 – Shift switch malfunction
• Code 37 – Water in fuel
• Code 41 – PORT temp. sensor circuit fault
• Code 42 – PORT temp. below expected range
• Code 47 – AT sensor circuit fault
• Code 48 – AT sensor below expected range
• Code 49 – AT sensor above expected range
• Code 57 – high RPM with low TPS setting
• Code 58 – PORT operating temp. not reached
• Code 59 – STBD operating temp. not reached
• Code 67 – STBD temp. sensor circuit fault
• Code 68 – STBD temp. below expected range
• Code 71 – oil pressure circuit fault detected
• Code 72 – oil pressure below expected range
• Code 73 – oil pressure above expected range
• Code 74 – water pressure circuit fault detected
• Code 75 – water pressure below range
• Code 76 – water pressure above range
• Code 78 – sensor supply voltage fault
• Code 79 – starter solenoid circuit open
• Code 87 – exhaust pressure circuit fault
• Code 88 – exhaust pressure below range
• Code 89 – exhaust pressure above range
• Code 97 – Intermittent switched B+ detected
LED 4 – Engine overh eat, EMM tempera ture or
sensor, oil inje ction pump or se nsor, “NO OIL /
OVERHEAT.” For LIGHT ON, check for possible
fault codes:
• Code 25 – EMM temp. above expected range
• Code 29 – EMM temp. OVER range (flashing)
• Code 31 – engine temp. OVER range (flashing)
• Code 33 – excessive NO OIL faults
• Code 34 – oil injection pump circuit open
• Code 38 – oil pressure feedback not detected
• Code 40 – engine overheat, low rpm
• Code 43 – PORT temp. above expected range
• Code 69 – STBD temp. above expected range
• Code 70 – engine overheat, low rpm
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