Otc C0036 Lf Wheel Speed Circuit Range/Performance - GMC chevrolet camaro 2000 Service Manual

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Brakes Antilock Brake System 5;.133
DTC C0036 LF Wheel Speed Circuit Range/Performance
LFWheel
· Speed
Sensor
@11
0.8YEL 873
0.8 LT BLU 830
B A C120
0.5 LT BLU 830 0.5 YEL 873
20 21 C1
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I · ·· · I Module (EBCM)
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Signal
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Circuit Description
The speed sensor used on this vehicle is a multiple
'pole magnetic pickup. This sensor produces an
AC signal that the EBCM uses the frequency from to
calculate the wheel speed.
Conditions for Setting the DTC
• The DTC will set if one wheel speed
=
O and the
other WSS are greater than 40 km/h (25 mph)
for 10 ms, or if the EBCM detects a short to
ground.
• The DTC will set if during drive off, one wheel
speed
=
0, and the other WSS are greater
than 12km/h (7,5 mph}.
Action Taken When the DTC Sets
• A malfunction DTC stores.
• Th.e ABS/TCS disables.
• The amber ABS/TCS indicator(s) turn on.
• The Red BRAKE Warning indicator could turn on.
Conditions for Clearing the DTC
• The condition responsible for setting the OTC no
longer exists and the scan tool Clear DTCs
function is used.
• 100 ignit!on cycles pass with no DTC(s) detected.
Important: After the OTC is cleared by ignition
cycle default, the vehicle must be driven above
12 km/h (8 mph) for the ABS/TCS indicator(s) to
turn off.
· 519697
Diagnostic Aids .
• It is very important that a thorough inspection of
the wiring and connectors be performed. Failure
to carefully and fully inspect wiring and connectors
may result in misdiagnosis, causing part
replacement with reappearance of the malfunction.
O
Thoroughly inspect any circuitry that may be
causing the complaint for the following conditions: ·
- Backed out terminals
- Improper mating
- Broken locks
- Improperly forrned or damaged terminals
- Poor terminal-to-wiring connections
- Physical damage to the wiring harness
• The following conditions may cause an intermittent
malfunction:
- A poor connection
- Rubbed-through wire insulation
- A broken wire inside the insulation
• If the customer's comments reflect that the amber
ABS/TCS indicator is on only during moist
environmental conditions (rain, snow, vehicle
wash), inspect all the wheel speed sensor circuitry
for signs of water intrusion. If the DTC is not
current, clear all OTCs and simulate the effects of
water intrusion by using the following procedure:
1. Spray the suspected area with a five percent
saltwater solution.
Add two teaspoons of salt to twelve. ounces
of water to make a five percent saltwater
solution.
2. Test drive the vehicle over various road
surfaces (bumps, turns, etc.) above
40 km/h (25 mph) for at least 30 seconds.
3. If the OTC returns, replace the suspected
harness.
" If an intermittent malfunction exists refer to
Testing for Intermittent and Poor Connections in
Wiring Systems.