5-10
F-581-R1
ENGINE WITH FUEL SYSTEM
2.4L LPG Engine Quick Trouble
Shooting Guide
First Check For DTC Faults
1.
Connect the S3000 Monitor and establish
communications.
2.
Check and note if there are any Diagnostic Trouble
Codes (DTC’s). Check both “Active” and “Historic”.
Press the “Save” button in the diagnostic window of
the S3000 Monitor.
• This will create a file (an HTML file with the default
name “diagnostics.html”. You can rename this file to
whatever you like, but DO NOT change the html
extension).
• This HTML file, when double clicked, will open in your
Internet Browser and show you what codes were
present, when the check was done and what the
ECU serial number, code and calibration are.
3.
If there are any active DTC’s use “DIAGNOSTIC
TROUBLES CODES” to trouble shoot and repair the
cause of the active DTC. There is an enclosed list of
the S3000 ECU’s Diagnostic Trouble Codes for
reference at the end of this Chapter 5.
If ECU Can Not Communicate With
The S3000 Monitor:
• You may not be getting power to the ECU.
1.
With the key “ON” but the engine “OFF” put your ear
down close to the Electronic Throttle Body (ETB).
You should hear a high pitched buzz or whine from
the ETB. If you do then the ECU has power and you
should check you S3000 cable connections.
2.
If there is no buzz then:
• Back-probe the Power Latch Relay connector
CPS206 with key in the “OFF” position
•
- pins E, F and D should have battery voltage
•
- pin A should be zero (or very low voltage)
3. Turn Key “ON”
•
- pin A should rise to battery voltage
•
- pin D should drop to zero (or very low voltage)
4.
If with key “OFF” you do not see voltage on pins E
and F then check forklift voltage supply and fuses.
5.
If you do not see voltage on pin D then the coil may
be bad in the relay (replace) or the power-latch relay
circuit may be shorted to ground or the ECU is
already on.
6.
If when key is turned “ON” pin D drops but pin A does
not rise the relay is faulty (replace).
7.
If when the key is turned “ON” pin D does not drop,
check that the key circuit is functioning by monitoring
pin A of the alternator connector CPS214. This pin
should go to battery voltage with key “ON” and to
ground with key “OFF”.
8.
If key circuit is working correctly and still no drop on
pin D of CPS206, then disconnect S3000 ECU,
check for debris or a bent pin on the ECU’s small
connector pin D1 and check continuity between
CPS203 pin D1 & CRP160 pin 3.
9.
Disconnect CRP160 and assure there is a good
ground from CPS160 pin 4 to battery ground.
Is The Throttle In Limp Home Mode?
If a fault occurs in any of the pedal, throttle or 5 volt
power supply circuits the Electronic Throttle Body (ETB)
will go into “Limp Home” mode. Power to the ETB will be
removed and the throttle will stop buzzing. The throttle
plate will take a neutral position of approximately 18%
and will not move.
IMPORTANT
Any of the following Diagnostic Trouble Codes
(DTC’s) will cause the throttle to go into Limp Home
mode:
SPN
FMI
Description
51
2
Throttle Sensor 1 vs. Throttle Sensor 2 Coherence
522711
4
Throttle Position Sensor 2 Open Circuit
522711
3
Throttle Position Sensor 2 Short Circuit
522710
4
Throttle Position Sensor 1 Open Circuit
522710
3
Throttle Position Sensor 1 Short Circuit
524286
31
Electronic Throttle Motor Wires Shorted or Watchdog Fail
524266
31
Electronic Throttle Motor Wires Shorted
522614
7
Throttle failed to enter Limp Home Zone
522616
8
Throttle actual versus commanded position error
522700 2
Redundant
μ
SDF Time-out
522696 2
Redundant
μ
pedal a/d conversion failure
Summary of Contents for Bendi B40i4
Page 2: ......
Page 26: ...1 20 F 581 R1 INTRODUCTION SAFETY AND INSPECTION...
Page 100: ...3 52 F 581 R1 TROUBLESHOOTING AND CORRECTIVE MAINTENANCE...
Page 120: ...4 20 F 581 R1 CALIBRATION AND PROGRAMMING...
Page 129: ...ENGINE WITH FUEL SYSTEM 5 9 Figure 5 10 Fuel System Troubleshooting...
Page 133: ...ENGINE WITH FUEL SYSTEM 5 13...
Page 134: ...5 14 F 581 R1 ENGINE WITH FUEL SYSTEM...
Page 140: ...6 2 F 581 R1 GM ENGINE SUPPLIER PROVIDED DOCUMENTATION...
