Chart B-18 Fr Speed Sensor Open Or Shorted (Dtc 52 (Flash Out) / C0221 (Serial Communications)) - Isuzu 1999 RODEO Workshop Manual

Chart B-18 FR Speed Sensor Open or Shorted (DTC 52 (Flash out) / C0221 (Serial
communications))
Step
1 1. Turn the key off.
2. Disconnect coil integrated module connector.
3. Measure the resistance between coil integrated module
connector (C-4) terminals 3 and 11.
Is the resistance between 2.0k and 2.8k ohms?
2 Measure the FR speed sensor resistance at the sensor
connector.
Is the resistance between 2.0k and 2.8k ohms?
3 1. Reconnect all components, ensure all components are
properly mounted.
2. Clear diagnostic trouble code.
Was this step finished?
Action
BRAKE CONTROL SYSTEM
Yes
Check for faults
in harness
between speed
sensor and coil
integrated
module.
Fault found:
Repair, and
perform system
self-check.
No fault found:
Replace coil
integrated
module.
Go to Step 3
Repair harness
abnormality
between sensors
and coil
integrated
module.
Go to Step 3
Repeat the "Basic
diagnostic flow
chart"
5A–47
No
Go to Step 2
Replace sensor.
Go to Step 3
Go to Step 3