Chart B-22 Rl Speed Sensor Short Circuit (Dtc 63) - Isuzu 2000 Trooper Workshop Manual

5A–38
BRAKE CONTROL SYSTEM

Chart B-22 RL Speed Sensor Short Circuit (DTC 63)

Step
1 1. Turn the key off.
2. Disconnect EHCU connector
3. Measure the RL speed sensor resistance between EHCU
connector terminals 22 and 23.
Is the resistance between 1.3k and 1.9k ohms?
2 Is there play in the sensor/sensor rotor?
3 Measure the RL speed sensor resistance at the sensor
connector.
Is the resistance between 1.3k and 1.9k ohms?
4 Damage and powdered iron sticking to sensor/sensor ring?
5 Is sensor output normal? (Chart C-2 or TC-2)?
6 1. Reconnect all components and ensure all components are
properly mounted.
2. Clear diagnostic trouble code.
Was this step finished?
NOTE: Even after repairing the faulty part the warning
light (W/L) does not go out if the vehicle is at a stop. Turn
the ignition switch to the ON position and drive the vehicle
at 12 km/h or higher to make sure that the warning light
goes out.
Action
Yes
Go to Step 2 Go to Step 3
Go to Step 4
Go to Step 6
Repair harness
abnormality
between sensors
and EHCU.
Replace sensor.
Go to Step 6
Go to Step 6
Go to Step 5
Go to Step 6
Check for faults
in harness
between speed
sensor and
EHCU.
Fault found:
repair, and
perform system
self-check.
No fault found:
replace EHCU. Replace sensor.
Go to Step 6 Go to Step 6
Repeat the "Basic
diagnostic flow
chart." Go to Step 6
No
Repair.
Repair.