Isuzu KB P190. Manual - part 451
ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-187
DTC P0567 (Flash Code 517)
Circuit Description
The cruise control keeps the vehicle speed at a driver's
set speed. When the cruise main switch is turned ON,
signal is provided to the ECM and the cruise main
indicator lamp on the switch or the instrument panel
cluster will light up. When the cruise resume/ accel.
switch is applied, the switch signal is provided to the
ECM and the vehicle speed is reset to the previous set
speed or vehicle speed is increased. If the ECM
detects the cruise resume/ accel. switch signal repeats
ON/ OFF or continuously ON, this DTC will set.
Condition for Running the DTC
• The ignition switch is ON.
• The engine is running.
Condition for Setting the DTC
Either of following condition is met:
• The ECM detects that the cruise resume/ accel.
switch signal is repeated ON/ OFF continuously
within a very short calibrated time.
• The ECM detects that the cruise resume/ accel.
switch signal is stuck at the ON position (high
voltage) for longer than 120 seconds.
Action Taken When the DTC Sets
• The ECM will not illuminate the MIL or SVS lamp.
Refer to DTC Type Definitions for Action Taken
When the DTC Sets - Type D.
• The ECM inhibits cruise control.
Condition for Clearing the DTC
• Refer to DTC Type Definitions for Condition for
Clearing the DTC - Type D.
Diagnostic Aids
• If an intermittent condition is suspected, refer to
Intermittent Conditions in this section.
Notice:
• This DTC will set if the cruise resume/ accel.
switch continues being applied for longer than 120
seconds.
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Controls
Connector End Views or ECM Connector End Views
Circuit/ System Testing DTC P0567
Step
Action
Value(s)
Yes
No
1
Did you perform the Diagnostic System Check -
Engine Controls?
—
Go to Step 2
Go to Diagnostic
System Check -
Engine Controls
2
1.
Install a scan tool.
2.
Turn ON the ignition, with the engine OFF.
3.
Observe the Cruise Resume Switch
parameter with a scan tool.
Does the scan tool indicate ON when the switch is
applied and OFF when the switch is released?
—
Go to Diagnostic
Aids
Go to Step 3
3
1.
Turn OFF the ignition.
2.
Disconnect the combination switch harness
connector (B-59). (Remove the IP cluster
lower cover as necessary)
3.
Turn ON the ignition, with the engine OFF.
Does the Cruise Resume Switch parameter
indicate OFF?
—
Go to Step 5
Go to Step 4
4
1.
Test the signal circuit between the ECM (pin
29 of C-58) and the combination switch (pin 9
of B-59) for a short to battery or ignition
voltage.
2.
Repair the circuit(s) as necessary.
Did you find and correct the condition?
—
Go to Step 7
Go to Step 6
5
Repair or replace the combination switch.
Did you complete the repair or replacement?
—
Go to Step 7
—