Isuzu N-Series. Service manual — part 266
5A4-38 ABS/ASR
DTC:C0213 (Flash Code 13) Model Type Identification Fault Due to Wrong Assembly of
Control Unit
Step
Action
Value
YES
NO
1
1. Turn the starter switch OFF.
2. Disconnect the J-177 connector of the
EHCU.
3. Turn the starter switch ON.
Measure the voltage between the J-177 con-
nector terminal 18 and the 1,23.
Is the voltage within the specified value?
0.5 — 4.5V
2
Repair the short circuit and improper connec-
tion in J-177 connector terminal 18.
Measure the voltage between the J-177 con-
nector terminal 18 and 1,23.
Is the voltage within the specified value?
0.5 — 4.5V
3
1. Install all the components, and check that
those are installed properly.
2. Clear the DTC.
3. With Tech 2:
• Connect the J-177 connector of the
EHCU.
Check the model type code.
Is this step completed?
—
Go to “Diagnostic
basic flow”.
4
Replace the EHCU with a new one.
Is this step completed?
—
Go to “Diagnostic
basic flow”.
ABS/ASR 5A4-39
Model Type Identification by Control Unit
EHCU (ABS control unit) is exclusively installed for each
vehicle type, based the drive system, brake type, tire,
etc. Also, you can use the warning lamp blinking pattern
to identify the type of control unit (for which vehicle
type).
How to Indicate Model Type Identification Re-
sult
With the ignition switch OFF, short the terminal 12 with
the terminal 4 or 5 (ground) of the self-diagnosis con-
nector, and depress the brake pedal and then turn the
starter switch to ON. The ABS warning lamp will blink to
indicate the result.
1.2
1.2
1.2
0.4
0.4
0.4
ON
OFF
ON
OFF
ON
OFF
OPEN
GND
Ignition switch
Diagnosis connector
Brake switch
Warning lamp
(Raised floor model)
Unit: sec
Approx.
3.2 sec
Vehicle model identification code: 1
0.4
N5A2036E
Model type
identification
code
2WD ABS
1
Raised floor model with front
wheel disc brake
2
Flat low model with front wheel
disc brake
3
Raised floor model with four
wheel drum brake
7
NQR model for EC
8
NQR model for Australia
5A4-40 ABS/ASR
DTC:C0214 (Flash Code 14) EHCU Fault
Check flow B-3
Step
Action
Value
YES
NO
1
1. Turn the starter switch OFF.
2. Disconnect the connector of the EHCU.
3. Check for continuity between the J-177
connector terminal 1,23 and the body
ground.
Is there continuity?
—
2
1. Connect the connector of the EHCU.
2. Clear the DTC.
3. Perform the self-diagnosis after turning
the starter switch from OFF to ON.
Is DTC displayed repeatedly?
—
3
Repair the circuit for open/short circuit, and
the connector for improper connection.
Is this step completed?
—
—
4
Replace the EHCU.
Is this step completed?
—
—
5
1. Install all the components, and check that
those are installed properly.
2. Clear the DTC.
Is this step completed?
—
Go to “Diagnostic
basic flow”.
ABS/ASR 5A4-41
DTC:C0215 (Flash Code 15) ECU Power Supply Fault
Check flow B-4
Step
Action
Value
YES
NO
1
Is the battery voltage normal?
—
2
1. Turn the starter switch OFF.
2. Disconnect the connector of the EHCU.
3. Start the engine.
4. Measure the voltage between the J-177
connector terminal 2 and the J-177 con-
nector terminal 1,23.
Is the value within specified value?
17 — 33.5V
3
Look for the circuit with improper connection.
Is improper connection found?
—
4
Repair and perform the self-diagnosis.
Is DTC displayed repeatedly?
—
5
Charge or replace the battery.
Is this step completed?
—
—
6
Repair the circuit for open/short circuit, and
the connector for improper connection
between the J-177 connector terminal 2 and
the fusible link FL-9.
Is this step completed?
—
—
7
Replace the control unit.
Is this step completed?
—
—
8
1. Install all the components, and check that
those are installed properly.
2. Clear the DTC.
Is this step completed?
—
Go to “Diagnostic
basic flow”.
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