1996 TOYOTA LAND CRUISER Workshop Manual

DI−232
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
1996 LAND CRUISER (RM451U)
3 Is DTC output?
Check DTC on page DI−190 .
YES Repair circuit indicated by code output.
NO
4 Does ABS warning light go off if short pin is removed?
NO Check for short in harness and connector be- tween warning light and DLC1 and ECU (See
page IN−28 ).
YES
5 Check ABS control relay (See step 2).
NG Replace ABS control relay.
OK
Check for short in harness and connector be-
tween DLC1 and ABS control relay (See page
IN−28 ).
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W02200
BR−BE1Tc
3 11
DLC1
B−YIH1 ABS ECU
Tc 12 VA13
5
EC
B−Y
11
F00007
Tc
DLC1
E1
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
DI−233
1996 LAND CRUISER (RM451U)
Tc Terminal Circuit
CIRCUIT DESCRIPTION
Connecting terminals Tc and E1 of the DLC1 causes the ECU to display the DTC by flashing the ABS warni\
ng
light.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check voltage between terminals Tc and E1 of DLC1.
CHECK:
(a) Turn the ignition switch ON.
(b) Measure the voltage between terminals Tc and E
1 of the
DLC1.
OK:
Voltage: 10 − 14 V
OK If ABS warning light does not blink even after Tc and E
1 are connected, ECU may be defective.
NG
DI5ML−02
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DI−234
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
1996 LAND CRUISER (RM451U)
2 Check for open and short in harness and connector between ABS ECU and
DLC1, and DLC1 and body ground (See page IN−28).
NG Repair or replace harness or connector.
OK
Check and replace ABS ECU.
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W01184
BR−BGR−R
31 6 15
13
Ts
Ts
DLC1 ABS ECU
12 V
E1IH1 A12
EC
GR−R
F00007
Ts
DLC1
E1
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
DI−235
1996 LAND CRUISER (RM451U)
Ts Terminal Circuit
CIRCUIT DESCRIPTION
The sensor check circuit detects abnormalities in the speed sensor signal which cannot be detecte\
d with
the DTC check. Connecting terminals Ts and E
1 of the DLC1 in the engine compartment starts the check.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check voltage between terminals Ts and E1 of DLC1.
CHECK:
(a) Turn the ignition switch ON.
(b) Measure the voltage between terminals Ts and E
1 of the
DLC1.
OK:
Voltage: 10 − 14 V
OK If ABS warning light does not blink even after Ts and E
1 are connected, ECU may be defective.
NG
DI5MN−02
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DI−236
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
1996 LAND CRUISER (RM451U)
2 Check for open and short in harness and connector between ABS ECU and
DLC1, and DLC1 and body ground (See page IN−28).
NG Repair or replace harness or connector.
OK
Check and replace ABS ECU.
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W02202
−
DIAGNOSTICS ANTI−LOCK BRAKE SYSTEM
DI−237
1996 LAND CRUISER (RM451U)
Check for Fluid Leakage
Check for fluid leakage from actuator or hydraulic lines.
DI5MP−02
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DI5Q0−02
Vehicle Brought to Workshop
Customer Problem Analysis
Warning Light Check
DTC Check and Recording
DTC ChartDI−243
Circuit Inspection
Remains on
Symptom SimulationDTC Check and Recording
Identification of Problem
Malfunction Code Clearance
Confirmation Test
Malfunction Code
END
Normal Code
Normal Code
1
2
3 7
8
Repair
10 6
5
Step
:Diagnostic steps permitting the use
of the TOYOTA hand−held tester.
3, 4, 5, 10, 11, 12
DI−239
DI−240
DI−271
DI−240
DI−240
DI−240
Malfunction Code Clearance4
DI−240
9
DTC Check11
DI−240
12 Does Not Light Up
Normal Code
Normal
Code
Malfunction Code
Malfunction Code
Malfunction Code
IN−18
DI−238
−
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
405
Author: Date:
1996 LAND CRUISER (RM451U)
SUPPLEMENTAL RESTRAINT SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
Perform troubleshoot in accordance with the procedure on the following page.
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DI5Q1−01
Supplemental Restraint System Check Sheet
Date Problem Dist Occurred
Customer ’s Name
Registration No.
Registration Year
Frame No.
Odometer Reading
Weather
Temperature
Vehicle Operation
Road Conditions
Details Of Problem
Vehicle Inspection, Repair Histo-
ry
Prior to Occurrence of Mal-
function(Including Supplemental
Restraint System)
Diagnosis System Inspection
SRS Warning Light
Inspection
DTC Inspection 1st Time
2nd Time
1st Time
2nd Time Inspector ’s
Name
Fine Cloudy Rainy Snowy Other
Approx.
Starting Idling
Driving [ Constant speed Acceleration Deceleration Other ]
Remains ON Sometimes Light Up Does Not Light Up
Remains ON Sometimes Light Up
Does Not Light Up
Normal Code Malfunction Code
Normal Code Malfunction Code [ Code.
]
[ Code. ]
km
Miles
//
// //
Date V
ehicle Brought In
−
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
DI−239
1996 LAND CRUISER (RM451U)
CUSTOMER PROBLEM ANALYSIS CHECK
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