check engine FORD MUSTANG 2003 Repair Manual

Anti-Lock Brake Control Module Diagnostic Trouble Code (DTC) Index
DTC Description Source Action
B1318 Battery Voltage Low ABS/TC Go To Pinpoint Test C .
B1342 ECU Is Defective ABS/TC INSTALL a new anti-
lock brake control
module; REFER to Module . REPEAT the
self- test. B1484 Brake Pedal Input Open Circuit ABS/TC Go To Pinpoint Test D .
B1596 Repair Continuous Codes ABS/TC REPAIR the DTCs retrieved.
C1095 ABS Hydraulic Pump Motor Circuit
Failure ABS/TC Go To Pinpoint Test E .
C1145 RF Anti-
Lock Brake Sensor Input
Circuit Failure ABS/TC Go To Pinpoint Test F .
C1155 LF Anti-
Lock Brake Sensor Input
Circuit Failure ABS/TC Go To Pinpoint Test F .
C1165 RR Anti-
Lock Brake Sensor Input
Circuit Failure ABS/TC Go To Pinpoint Test F .
C1175 LR Anti-
Lock Brake Sensor Input
Circuit Failure ABS/TC Go To Pinpoint Test F .
C1222 Anti-
Lock Brake Sensor Mismatch ABS/TC Go To Pinpoint Test G .
C1233 LF Anti-
Lock Brake Sensor Input
Signal Missing ABS/TC Go To Pinpoint Test H .
C1234 RF Anti-
Lock Brake Sensor Input
Signal Missing ABS/TC Go To Pinpoint Test H .
C1235 RR Anti-
Lock Brake Sensor Input
Signal Missing ABS/TC Go To Pinpoint Test H .
C1236 LR Anti-
Lock Brake Sensor Input
Signal Missing ABS/TC Go To Pinpoint Test H .
C1266 ABS Valve Power Relay Circuit
Failure ABS/TC INSTALL a new anti-
lock brake control
module; REFER to Module . REPEAT the
self- test. C1805 Mismatched PCM and/or Anti-Lock
Brake Control Module ABS/TC CLEAR the DTCs. RETRIEVE the DTCs. If
DTC C1805 is retrieved, check the PCM
and Anti- Lock Brake Control Module is for
the correct vehicle. INSTALL a new PCM or
anti-lock brake control module as
necessary. CLEAR the DTCs. REPEAT the self-test. U1009 SCP (J1850) Invalid or Missing Data
for Engine Torque ABS/TC CARRY OUT the PCM self-
test. U1027 SCP (J1850) Invalid or Missing Data
for Engine RPM ABS/TC CARRY OUT the PCM self-
test. U1059 SCP (J1850) Invalid or Missing Data
for Transmission/Transaxle/PRNDL ABS/TC CARRY OUT the PCM self-
test. U1083 SCP (J1850) Invalid or Missing Data
for Engine Systems ABS/TC CARRY OUT the PCM self-
test. U1262 SCP (J1850) Communication Bus
Fault ABS/TC REFER to
Section 418 - 00 . Klj . 3 ba
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PINPOINT TEST B: UNABLE TO ENTER SELF-
TEST
PINPOINT TEST C: DTC B1318, BATTERY VOLTAGE LOW z
Is the voltage greater than 10 volts? REPEAT the self-
test.
A2 CHECK THE ANTI-
LOCK BRAKE CONTROL MODULE GROUNDS z
Measure the resistance between anti- lock brake control module
C141 Pin 12, Circuit 1205 (BK), harness side and ground; and
between anti- lock brake control module C141 Pin 15, Circuit 397
(BK/WH), harness side and ground.
z Are the resistances less than 5 ohms? Yes
INSTALL a new
anti-
lock brake
control module;
REFER to Module .
REPEAT the self-
test.
No
REPAIR the circuit
in question.
REPEAT the self-
test. Test Step Result / Action to Take
B1 CHECK THE COMMUNICATIONS TO THE
ANTI- LOCK BRAKE CONTROL MODULE z
Check the communications to the anti- lock
brake control module.
z Does the scan tool communicate with the
anti-lock brake control module? Yes
INSTALL a new anti-
lock brake control
module; REFER to Module . REPEAT the
self- test.
No
Go To Pinpoint Test A .
Test Step Result / Action to
Take C1 CHECK BATTERY VOLTAGE
z
Measure the battery voltage between the positive and negative
battery posts with the key ON engine OFF (KOEO), and with the
engine running. Yes
GO to
C2 .
No
REFER to Section Klj . 7 ba
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PINPOINT TEST D: DTC B1484, BRAKE PEDAL INPUT OPEN
CIRCUIT z
Is the battery voltage between 10 and 13 volts with KOEO, and
between 11 and 17 volts with the engine running? 414 - 00 .
C2 CHECK THE VOLTAGE TO THE ANTI-
LOCK BRAKE CONTROL
MODULE z
Key in OFF position.
z Disconnect: Anti- Lock Brake Control Module C141.
z Key in ON position.
z Measure the voltage between anti- lock brake control module C141
Pin 8, Circuit 601 (LB/PK), harness side and ground.
z Is the voltage greater than 10 volts? Yes
GO to
C3 .
No
REPAIR the circuit.
CLEAR the DTCs.
REPEAT the self-
test. C3 CHECK THE ANTI-
LOCK BRAKE CONTROL MODULE GROUNDS z
Measure the resistance between anti- lock brake control module
C141 Pin 12, Circuit 1205 (BK), harness side and ground; and
between anti- lock brake control module C141 Pin 15, Circuit 397
(BK/WH), harness side and ground.
z Are the resistances less than 5 ohms? Yes
INSTALL a new
anti-
lock brake
control module;
REFER to Module .
REPEAT the self-
test.
No
REPAIR the circuit
in question.
CLEAR the DTCs.
REPEAT the self-
test. Test Step Result / Action to Take
D1 CHECK THE STOPLAMPS FOR CORRECT OPERATION Klj . 8 ba
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1. Verify the customer concern by operating the steering system.
2. Inspect Tires
zCheck the tire pressure. Refer to the Vehicle Certification (VC) label.
z Verify that all tires are sized to specification.
z Check the tires for damage or uneven wear.
3. Belt and Tensioner Check zRefer to Section 303 - 05 for diagnosis and testing of the accessory drive system.
4. Fluid Level Check zVerify that the power steering fluid level is within the appropriate indicated range, hot for
the 3.8L engine and cold for the 4.6L engine. Add Motorcraft MERCON® Multi- Purpose
ATF XT -2-QDX or MERCON® equivalent.
5. Air Bleeding zVerify that there is no air in the power steering system. Run the engine (6007) until it
reaches normal operating temperature. Turn the steering wheel to the left and right
several times without hitting the stops. If any air bubbles are present, refer to Purging —
CII Power Steering Pump or
Purging — CIII Power Steering Pump in this section.
External Leak Check — Typical Power Rack-and-Pinion Steering Gear Klj . 2 ba
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6. External Leak Check
zWith the ignition switch at OFF, wipe off the power steering pump, power steering hoses,
power steering fluid cooler (3D746) and steering gear (3504).
z With the engine running, turn the steering wheel from stop- to-stop several times. Do not
hold steering wheel at stops. Check for leaks. Repair as necessary if leaks are observed.
7. Turning Effort Check zRefer to Turning Effort Test under Component Tests in this section.
8. Visually inspect for obvious signs of mechanical damage; refer to the following chart. Klj . 3 ba
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Component Tests
Steering Linkage
1. NOTE: Excessive vertical motion of the studs relative to the sockets may indicate excessive
wear.
With the parking brake applied, perform the following:
zHave an assistant rotate the steering wheel back and forth 360 degrees and watch for
relative motion of the studs in the tie- rod end ball sockets.
z Watch for loose steering gear mounting.
2. Another method is to raise the front wheels (1007) off the ground, grasp the wheel at the front and rear and watch for excessive play or binding in the joints while trying to steer the wheels.
3. Install new steering components as necessary. For additional information, refer to the appropriate Group 2 steering section.
Turning Effort Test
NOTE: Make sure that the front wheels are properly aligned and the tire pressure is correct before
checking the effort.
1. Park the vehicle on dry concrete and set the parking brake.
2. Insert a thermometer into the power steering pump reservoir.
3. CAUTION: Do not hold the steering wheel against the stops for more than three to
five seconds at a time. Damage to the power steering pump will occur.
Idle the engine for two to three minutes. Turn the steering wheel from stop- to-stop several times
to warm the fluid to 50- 60°C (122-140°F).
4. With the engine running, attach special tool 211- 034 (T74P-3504-Y) to the rim of the steering
wheel.
5. Measure the pull required to turn the steering wheel one complete revolution in each direction. Refer to Steering Wheel Turning Effort under General Specifications in this section.
Pump Flow and Pressure Test WARNING: Do not touch the flowmeter during the test procedure, or severe burns and
serious injury may occur.
1. CAUTION: Make sure that the connection point will not interfere with any of the
engine accessory drive components or drive belts.
Install special tool 211- F001 (014-00207) at the high pressure port of the power steering pump.
Make sure the power steering analyzer gate valve is fully open. Klj . 8 ba
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z
On some vehicles, the power steering pump high pressure port is inaccessible and the
special tool should then be installed either at the steering gear or at a point in the high
pressure line between the power steering pump and the steering gear.
2. Place a dial thermometer in the power steering pump reservoir.
3. Check the power steering fluid level. If necessary, add power steering fluid. zUse Motorcraft MERCON® Multi-Purpose ATF XT -2-QDX or MERCON® equivalent.
4. Install a digital tachometer.
5. CAUTION: Do not hold the steering wheel against the stops for more than three to
five seconds at a time. Damage to the power steering pump will occur.
Start the engine. Place the transmission in neutral. Set the parking brake. Raise the power
steering fluid temperature to 74- 80°C (165-175°F) by rotating the steering wheel fully to the left
and right several times.
6. Set the engine speed to 1500 rpm. Record the flow rate and pressure readings. zIf the flow rate is below the flow rate specification, a new power steering pump may need
to be installed. Continue with the test procedure.
z If the pressure reading is above the maximum pressure specification, then check power
steering hoses for kinks and restrictions.
7. Partially close the gate valve to obtain 750 psi. Set the engine speed at idle. Record the flow rate.
zIf the flow is less than the specified flow rate, then install a new power steering pump. For
additional information, refer to Section 211 - 02 .
8. CAUTION: Do not allow the gate valve to remain closed for more than 5 seconds.
Completely close and partially open the gate valve 3 times. Record the pressure relief valve
actuation pressure reading. zIf the pressure does not meet the relief pressure specification, install a new power
steering pump. For additional information, refer to Section 211 - 02 .
9. Set engine speed to 1500 rpm. Record the flow rate. zIf the flow rate varies more than 3.785 liters/minute (1 gallon/minute) from the initial flow
rate reading, install a new power steering pump. For additional information, refer to
Section 211 - 02 .
10. CAUTION: Do not hold the steering wheel against the stops for more than three to
five seconds at a time. Damage to the power steering pump will occur.
Set the engine speed at idle. Turn (or have an assistant turn) the steering wheel to the left and
right stops. Record flow rate and pressure readings at the stops.
zThe pressure reading at both stops should be nearly the same as the maximum pump
relief pressure.
z The flow rate should drop below 1.9 liters/minute (0.5 gallons/minute).
z If the pressure does not reach the maximum pump relief pressure or the flow rate does
not drop below the specified value, excessive internal leakage is occurring. Install a new
steering gear as necessary. For additional information, refer to Section 211 - 02 . Klj . 9 ba
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11. Turn (or have an assistant turn) the steering wheel slightly in both directions and release quickly
while watching the pressure gauge.
zThe pressure reading should move from the normal back pressure reading and snap
back as the steering wheel is released.
z If the pressure returns slowly or sticks, the rotary valve in the steering gear is sticking or
the steering column is binding. Check the steering column and linkages before servicing
the steering gear.
Tie- Rod Articulation Torque
1. NOTE: This check may be done with the steering gear on or off the vehicle.
Disconnect the tie- rod end from the front wheel spindle. For additional information, refer to
Section 211 - 02 .
2. Move the front wheel spindle tie- rod back and forth three times.
3. Hook the special tool 211- 034 (T74P-3504-Y) over the tie-rod end or the threaded portion of the
front wheel spindle tie- rod and measure the force required to move the front wheel spindle tie-
rod. Refer to Tie- Rod Articulation Torque in General Specifications in this section.
4. If the force required to move the front wheel spindle tie- rod does not meet the specifications,
install a new front wheel spindle tie- rod. For additional information, refer to Section 211 - 02 .
Steering Gear Valve 1. With the vehicle in motion, place the transmission in NEUTRAL and turn the engine OFF. zIf the vehicle does not pull with the engine OFF, install a new steering gear. For
additional information, refer to Section 211 - 02 .
2. If the vehicle pulls with the engine OFF, cross- switch the front wheels.
3. If the vehicle pulls to the opposite side, cross- switch the front and rear wheels on the same side.
4. If the vehicle pull direction does not change, check the front suspension components, wheel alignment and frame alignment. For additional information, refer to Section 204 - 00 or frame
dimensions manual. Klj . 10 ba
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GENERAL PROCEDURES
System Flushing —
CII Power Steering Pump
WARNING: Do not mix oil types. Any mixture or any unapproved oil can lead to seal
deterioration and leaks. A leak can ultimately cause loss of fluid, which can result in a loss of
power steering assist.
1. Remove the fuel pump fuse from the battery junction box.
2. Disconnect the power steering return hose. Plug the reservoir.
3. Attach an extension hose between the power steering return hose and an empty container.
4. Raise the front wheels off the floor. For additional information, refer to Section 100 - 02 .
5. Check the fluid level. If necessary, fill the reservoir to the correct level. zUse Motorcraft MERCON® Multi-Purpose ATF XT -2-QDX or MERCON® equivalent.
6. CAUTION: Do not crank the engine for more than 15 seconds at a time. Allow the
starter to cool for 1 minute before cranking again. Premature starter failure can occur.
CAUTION: Do not hold the steering wheel against the stops for more than three to
five seconds at a time. Damage to the power steering pump will occur.
Turn the steering wheel from stop- to-stop while cranking the engine until the fluid exiting the
power steering return hose is clear of all contamination and foreign material.
zAdd Motorcraft MERCON® Multi-Purpose ATF XT -2-QDX or MERCON® equivalent as
needed.
7. Lower the vehicle.
8. Disconnect the extension hose from the power steering return hose. Remove the plug. Attach the power steering return hose to the reservoir.
SECTION 211-
00: Steering System — General Information 2003 Mustang Workshop Manual Klj . 1 ba
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9.
CAUTION: Do not overfill the reservoir.
Check the fluid level. If necessary, fill the reservoir to the correct level. zUse Motorcraft MERCON® Multi-Purpose ATF XT -2-QDX or MERCON® equivalent.
10. Install the fuel pump fuse.
11. CAUTION: Do not hold the steering wheel against the stops for more than three to
five seconds at a time. Damage to the power steering pump will occur.
Start the engine and turn the steering wheel from stop- to-stop.
12. CAUTION: Do not overfill the reservoir.
NOTE: If the power steering system is noisy and is accompanied by evidence of aerated fluid it
will be necessary to purge the power steering system.
Check the fluid level. If necessary, fill the reservoir to the correct level.
zUse Motorcraft MERCON® Multi-Purpose ATF XT -2-QDX or MERCON® equivalent. Klj . 2 ba
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