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Page Title:
P102 4 - TURBO BOOST PRESSURE CIRCUIT FAILED LOW (LOW VOLTAGE) (cont) |
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 TM 9-2320-364-20-1
Section IV. TROUBLESHOOTING CHARTS (Cont.)
E. FLASH CODE:
34
J1587 CODE:
P102 4 - TURBO BOOST PRESSURE CIRCUIT FAILED LOW (LOW VOLTAGE)
STEP/SEQUENCE
RESULT
WHAT TO DO NEXT
34-8
Check for Open +5
Volt Line
Turn ignition off.
Less than or
Go to 34-9.
Disconnect the vehicle harness
equal to 5 ohms.
connectors at the ECM.
Install a jumper wire between
Greater than
The engine +5 volt line (ckt
pins A and C of the TBS
5 ohms or open.
#416) is open. Repair open.
connector.
Then go to 34-30.
Read resistance between sockets
W1 and Y2 on the engine
harness connector.
34-9
Check for Short
Remove jumper.
Less than or
The +5 volt line (ckt #416) is
Read resistance between pins A
equal to 10,000 ohms.
shorted to return line (ckt #452).
and C on the TBS connector.
Repair short. Then go to 34-30.
Greater than
Go to 34-7.
10,000 ohms or open.
34-10
Check for Short to
Battery +
Turn ignition off.
All readings are
Go to 34-7.
Disconnect batteries (para 7-87).
greater than 10,000 ohms
Disconnect the engine harness
or open.
vehicle harness and 5-way power
harness connectors at the ECM.
Any reading is
A short exists between the
Read resistance between socket
less than or equal to
sockets where less than 10,000
P1 of the engine harness
10,000 ohms.
ohms resistance was read.
connector and socket B3 of the
Repair short and connect
vehicle harness connector.
batteries. Then go to 34-30.
Also read resistance between
socket P1 on the engine harness
connector and the following
sockets on the 5-way power
harness connector: A and C.
2-677
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