Rack Position Sensor Abnormal; 26108 Rack Position Sensor Abnormal; Actuator Abnormal Encu; 26109 Actuator Abnormal Encu - Carrier TRANSICOLD VECTOR 8500 Operation & Service Manual

26108

RACK POSITION SENSOR ABNORMAL

• ACTIVATION: Sensor voltage > 4.9 V or < 0.3V
• UNIT CONTROL: Engine Operation: Alarm only.
• RESET CONDITION: If trigger on message not received for 5 seconds, alarm reset or alarm may be
manually reset by turning the unit off, then back on again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, clear the
alarm(s). (Refer to Note 1 in
any active alarm occurs. Continue with the steps below as necessary.
CORRECTIVE ACTIONS:
1. Check Rack Position Sensor (RPS)
Inspect sensor, connector pins & terminals. (See wiring schematic
to sensor. No damaged or corrosion in connections.
2. Check Rack Position Sensor (RPS). Refer to
3. Refer to 26106 SENSOR SUPPLY VOLTAGE 1
26109

ACTUATOR ABNORMAL ENCU

• ACTIVATION: Actuator current >3.0A or < 80mA
• UNIT CONTROL: Engine Operation: Required Shutdown.
• RESET CONDITION: If trigger on message not received for 5 seconds, alarm reset or alarm may be
manually reset by turning the unit off, then back on again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, clear the
alarm(s). (Refer to Note 1 in
any active alarm occurs. Continue with the steps below as necessary.
CORRECTIVE ACTIONS:
1. Refer to 05012 CHECK ENCU POWER CIRCUIT
2. Check Engine Control Unit (ENCU) and Fuel Speed Actuator (FSA)
a. Check voltage from fuse F3 through PCM−34 and SP−18 to ENCU−22. Verify correct fuse, see
ure 2.5. Must have minimum 11 VDC with the battery connected and SROS in the OFF position.
b. Check voltage from 3MM-9 to ENCU−44. Must have minimum 11 VDC with SROS in the START/
RUN position. If no, energize the run relay output using component test mode (refer to
nent Test Mode) and retest.
c. Check for ground at ENCU-19 and ENCUGND−A (at the battery negative cable connection). If
ground not good, check connectors and wiring between terminals for damage, moisture or corrosion.
d. Inspect fuel/speed actuator (FSA), engine speed sensor (ENSSN) and engine speed control unit
(ENCU) connector pins & terminals. Verify no physical damage to components, and no damage or
corrosion in connectors.
e. Check resistance & amp draw of FSA. Refer to
f. Check FSA plunger. Must move in and out freely. Refer to engine manual.
Electric Operation: Will not activate in electric operation.
Notes Section, page 7-2.) Operate the unit through the appropriate modes to see if
Electric Operation: Will not activate in electric operation.
Notes Section, page 7-2.) Operate the unit through the appropriate modes to see if
Section
Section 8.5.12
LOW.
Section 2.11 for specifications.
7–119
10.) No physical damage
Fig-
Compo-
62-11640