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Section
4
TM 9-2320-363-20-1
TROUBLESHOOTING
CHARTS
E. CODE
16-
COOLANT
LEVEL
SENSOR
(CLS)
SIGNAL
VOLTAGE
HIGH
(Cent’d.)
16-5
Check
if Ignition
Fuse Blown
l Check if the ignition fuse
is blown.
16-6
Check
for Signal
Short
to Ignition
l Disconnect the vehicle harness
connector at the ECM.
l Remove jumper wire at the CLS
harness connector.
l Read resistance between sockets
D and E of the CLS connector on
the vehicle harness.
16-7
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
module connectors.
16-8
Check
for 12V
l Turn ignition off.
. Disconnect CLS module connector.
l Place the red lead of a volt meter
into terminal E of the CLS
connector vehicle harness side.
l Connect the black lead to terminal
C of the CLS connector vehicle
harness side.
l Turn ignition on.
. Read voltage.
RESULT
WHAT TO DO NEXT
Blown fuse.
Replace fuse, page 4-204.
Then go to 16-6.
Fuse is okay.
Go to 16-6.
Less than
The CLS signal line (ckt #115)
10,000 ohms.
is shorted to the switched 12
volt DC line. Contact Direct
Support. Then go to 16-30.
Greater than
Go to 16-7.
or equal to 10,000 ohms
or open.
Terminals andGo to16-8.
connectors
are okay.
Problem found.
Repair terminals/connectors,
page 3-2. Then go to 16-30.
Less than or
An open exists on the 12 volt
equal to 10 volts.
wire. Repair open, page 3-2.
Then go to 16-30.
Greater than
Replace ECM, page 4-192.
10 volts.
Then go to 16-30.
3-219
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