DTC Diagnosis Procedure
- CHECK ASCD STEERING SWITCH CIRCUIT
With CONSULT
- Turn ignition switch ON.
- Select "CANCEL SW", "RESUME/ACC SW" and "SET SW" in "DATA MONITOR" mode of "ENGINE" using CONSULT.
- Check each item indication as per the following conditions.
Monitor item
Condition
Indication
MAIN SW
MAIN switch
Pressed
ON
Released
OFF
CANCEL SW
CANCEL switch
Pressed
ON
Released
OFF
RESUME/ACC SW
ACCEL/RES switch
Pressed
ON
Released
OFF
SET SW
COAST/SET switch
Pressed
ON
Released
OFF
Without CONSULT
- Turn ignition switch ON.
- Check the voltage between ECM harness connector terminals.
ECM
Condition
Voltage
(Approx.)
+
-
Connector
Terminal
Connector
Terminal
E16
134
E16
135
MAIN switch: Pressed
0 V
CANCEL switch: Pressed
1 V
COAST/SET switch: Pressed
2 V
ACCEL/RES switch: Pressed
3 V
All ASCD steering switches: Released
4 V
Is the inspection result normal?
YES
Check intermittent incident. Refer to Intermittent Incident .
NO
GO TO 2.
- CHECK ASCD STEERING SWITCH GROUND CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Disconnect spiral cable harness connector.
- Check the continuity between spiral cable harness connector and ECM harness connector.
+
-
Continuity
Spiral cable
ECM
Connector
Terminal
Connector
Terminal
M30
32
E16
135
Existed
- Also check harness for short to ground and to power.
Is the inspection result normal?
YES
GO TO 3.
NO
Repair or replace error-detected parts.
- CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT
- Check the continuity between ECM harness connector and spiral cable harness connector.
+
-
Continuity
Spiral cable
ECM
Connector
Terminal
Connector
Terminal
M30
25
E16
134
Existed
- Also check harness for short to ground and to power.
Is the inspection result normal?
YES
GO TO 4.
NO
Repair or replace error-detected parts.
- Check the continuity between ECM harness connector and spiral cable harness connector.
- CHECK ASCD STEERING SWITCH
Refer to Component Inspection .
Is the inspection result normal?
YES
Check intermittent incident. Refer to Intermittent Incident .
NO
Replace ASCD steering switch. Refer to Exploded View .