Kia Cee'd: ESP(Electronic Stability Program) System / Troubleshooting
| 1. |
In principle, ESP and TCS controls are prohibited in case of ABS failure.
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| 2. |
When ESP or TCS fails, only the failed system control is prohibited.
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| 3. |
However, when the solenoid valve relay should be turned off in case
of ESP failure, refer to the ABS fail-safe.
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| 4. |
Information on ABS fail-safe is identical to the fail-safe in systems
where ESP is not installed.
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Memory of Fail Code
| 1. |
It keeps the code as far as the backup lamp power is connected. (O)
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| 2. |
It keeps the code as long as the HCU power is on. (X)
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Failure Checkup
| 1. |
Initial checkup is performed immediately after the HECU power on.
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| 2. |
Valve relay checkup is performed immediately after the IG2 ON.
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| 3. |
It executes the checkup all the time while the IG2 power is on.
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| 4. |
Initial checkup is made in the following cases.
| (1) |
When no failure is detected
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| (2) |
When ABS and ESP are not in control.
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| (3) |
Initial checkup is not made after ECU power on.
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| (4) |
If the vehicle speed is over 5 mph(8 km/h) when the brake lamp
switch is off.
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| (5) |
When the vehicle speed is over 24.8 mph(40 km/h).
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| 5. |
Though, it keeps on checkup even if the brake lamp switch is on.
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| 6. |
When performing ABS or ESP control before the initial checkup, stop
the initial checkup and wait for the HECU power input again.
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| 7. |
Judge failure in the following cases.
| (1) |
When the power is normal.
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| (2) |
From the point in which the vehicle speed reaches 4.9 mph(8
km/h) after HECU power on.
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Countermeasures In Fail
| 1. |
Shut the system down and perform the following actions and wait for
HECU power OFF.
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| 2. |
Turn the valve relay off.
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| 3. |
Do not perform any ABS/TCS/ESP functions until normal operating condition
is restored.
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Warning Lamp On
| 1. |
ABS warning lamp turns on when ABS is malfunctioning.
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| 2. |
ESP function/ warning lamp turns on when ESP is malfunctioning.
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When power voltage and valve relay voltage are abnormal, input/output related
failure judgment is not made.
Circuit Diagram - ESP (1)
Circuit Diagram - ESP (2)
Circuit Diagram - ESP (3)
Circuit Diagram - ESP (4)
ESP Connector Input/ ...
Components
1. Front - left tube
2. Rear - right tube
3. Rear - left tube
4. Front - right tube
5. MC2
6. MC1
7. ESP control module(HECU)
...
Schematic diagrams
ESP Control Module Components and components location