Sensor Input Voltage High INP1
electrical
Description
Voltage from the main microprocessor to the sensors is greater than 5.5 VDC, and the unit alarms only.
Activation Conditions
Voltage from main microprocessor to the sensors is greater than 5.5 VDC
Unit Behavior
Engine and Electric Operation: Alarm only.
Reset Conditions
Auto reset when sensor voltage is correct, alarm reset or alarm may be manually reset by turning the unit off, then back on again.
Corrective Actions
1. Check Wiring - If a transducer reading is not within a reasonable range of gauge reading, check wires to sensors for short. • for CSP, check wiring from 2MM-20, 2MM-30 and 2MM-9. • for EVOP, check wiring from 2MM-25, SP-20 and 2MM-17. • for CDP, check wiring from 2MM-21, SP-20 and 2MM-10. • for ECOP, check wiring from 2MM-28, SP-20 and 2MM-14. 2. Check CT Wiring - Check wires to sensor for short from another circuit. Check wiring from 2MM-29, 2MM- 12 and 2MM-23 to PCM. 3. Replace Main Microprocessor - Download data and replace main microprocessor. for complete Main Microprocessor Module replacement instructions refer to Section 5.5.2.