STEP/SEQUENCE
RESULT
WHAT TO DO NEXT
TM 9-2320-363-20-1
Section 4
TROUBLESHOOTING CHARTS
E. FLASH CODE:
33
J1587 CODE:
P102 3 - TURBO BOOST PRESSURE CIRCUIT FAILED HIGH (HIGH VOLTAGE)
NOTE - This chart is only to be used if:
1)
All basic mechanical checks and physical inspections have been performed with no problem found, and
2)
Diagnosis of DDEC-III was started at step Start-1, pg 3-345.41 and you have now been referred here.
33-1
Multiple Code Check
Were there any other active
No other codes.
Go to 33-2.
codes besides Code 102/3?
Yes, any or all
Go to ENG5V-1 (page 3-345.413).
of the following codes:
110/3 or 4, 175/3 or 4,
174/3 or 4, 72/3 or 4,
100/3 or 4, 94/3 or 4,
101/3 or 4, 73/3 or 4.
Yes - but none
Go to 33-2.
of the above.
33-2
Sensor Check
Turn ignition off.
Code 102/4 (and
Go to 33-3.
Disconnect TBS connector.
any codes except
Start and run engine at idle.
Code 102/3).
Read active codes.
Code 102/3 (and
Go to 33-5.
any other codes).
33-3
Return Circuit Check
Turn ignition off.
Less than or
Go to 33-4.
Install a jumper wire between pins
equal to 5 ohms.
A and B of the TBS harness
connector.
Greater than
Return line (ckt#452) is open.
Disconnect engine harness
5 ohms or open.
Repair open. Then go to 33-30.
connector at the ECM.
Read resistance between sockets
P1 and Y2 on the engine harness
connector.
33-4
Check TBS Connectors
Inspect terminals at the TBS
Terminals and
Replace TBS. Then go to
connectors (both the sensor and
connectors are okay.
33-30.
harness side) for damage; bent,
corroded, and unseated pins or
Problem found.
Repair terminals/connectors.
sockets.
Then go to 33-30.
Change 3 3-345.269
