Isuzu N-Series. Manual — part 267
5A4-42 ABS/ASR
DTC:C0216 (Flash Code 16) CAN Communication Fault
Check flow B-5
Step
Action
Value
YES
NO
1
1. Turn the starter switch OFF.
2. Remove the harnesses from all the con-
trol units (engine, ABS, Smoother, etc.)
connected to the CAN communication
circuit.
3. Check for short circuit (shorts with
ground, power supply, lines, and circuits)
in the CAN communication circuit har-
nesses.
Is the harness normal?
—
2
Repair the CAN communication circuit.
Is the procedure completed?
—
—
3
1. Turn the starter switch OFF.
2. Remove the harness from the EHCU.
3. Measure the circuit resistance between
the terminals 14 and 15, and between ter-
minals 26 and 27 in EHCU harness-side
connector.
Is the resistance within specified value?
100 —140
Ω
4
Inspect the CAN communication circuit, termi-
nating resistor, and connectors for faulty con-
tact, the pin terminals for looseness, etc., and
repair as necessary.
Is the procedure completed?
—
—
5
1. Turn the starter switch OFF.
2. Check the CAN communication (engine,
ABS, Smoother, etc.) circuit harnesses
for open circuit.
Is the harness normal?
—
6
Repair the CAN communication circuit.
Is the procedure completed?
—
—
7
1. Turn the starter switch OFF.
2. Install the harnesses to all the control
units connected to the CAN communica-
tion circuit.
3. Turn the starter switch ON.
4. Check each system (engine, Smoother,
etc) for DTC.
5. If any DTC is detected in any system, re-
pair it.
Is the procedure completed?
—
—
8
1. Clear the DTC.
2. Perform the test drive.
3. Check for DTC.
Was DTC C0216 detected?
—
ABS/ASR 5A4-43
9
Replace the EHCU.
Is this step completed?
—
—
10
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”.
Step
Action
Value
YES
NO
5A4-44 ABS/ASR
DTC:C0226 (Flash Code 26) ECM Communication Fault
Check flow B-6
Step
Action
Value
YES
NO
1
Inspect the engine control, and repair or
replace any faulty parts.
Is this step completed?
—
2
Perform the check flow B-5.
Is this step completed?
—
3
1. Clear the DTC.
2. Perform the test drive.
3. Check for DTC.
Was DTC C0226 detected?
—
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 5A4-45
DTC:C0233 (Flash Code 33) Motor Drive Circuit Fault
Check flow B-7
Step
Action
Value
YES
NO
1
1. Turn the starter switch OFF.
2. Disconnect the connector of the EHCU.
3. Turn the starter switch ON.
4. Measure the voltage between the J-177
connector terminal 24 and the J-177 con-
nector terminal 23.
Is the value within specified value?
20 — 32V
2
Repair the circuit between the J-177 connec-
tor terminal 24 and the FL-9, or replace the
FL-9.
Is this step completed?
—
3
Measure the voltage between the J-177 con-
nector terminals 24 and 23.
Is the value within specified value?
20 — 32V
4
Repair the harness between the J-177 con-
nector terminal 23 and the chassis ground.
Is this step completed?
—
5
Replace the EHCU.
Is this step completed?
—
6
1. Install all the components, and check that
those are installed properly.
2. Clear the DTC.
3. Test run the vehicle.
Is this step completed?
—
Go to “Diagnostic
basic flow”.
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