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TM9-2320-360-20-3
Section 4
TROUBLESHOOTING CHARTS
E. FLASH CODE:
16
J1587 CODE:
P111 3 - COOLANT LEVEL CIRCUIT FAILED HIGH (VOLTAGE HIGH)
16-4
Check for Signal Short
to lgnition
l Disconnect the vehicle harness
connector at the ECM.
l Remove jumper wire at the CLS
connector.
l Read resistance between sockets
H3 (ckt #115) and B3 (ckt #439)
of vehicle harness connector.
16-5
Check ECM
Connectors
l Check terminals at the vehicle
harness connector (both the ECM
and harness side) for damage;
bent, corroded, and unseated
pins or sockets. Check terminal
and pin H3 at the ECM and all
terminals and pins in the CLS
connector.
16-6
Check for Open
l Disconnect the vehicle harness
connector at the ECM.
l Place the red lead of the volt
meter into socket B3 (439) and
black lead to a good ground.
l Turn ignition on.
l Read voltage.
RESULT
Less than
10,000 ohms.
Greater than
or equal to 10,000 ohms
or open.
Terminals and
connectors are okay.
Problem found.
Less than or
equal to 10 volts.
Greater than
Replace ECM (para 7-29.1).
10 volts.
Then go to 16-30.
The CLS signal line (ckt #115)
is shorted to the ignition line
(ckt #439). Repair short. Then
go to 16-30.
Go to 16-5.
Go to 16-6.
Repair terminals/connectors
(para 7-77). Then go to 16-30.
An open exists on the ignition
line (ckt #439). Repair
open. Then go to 16-30.
H-135
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