- When disconnecting ESP® control module connector, be sure to disconnect the negative cable at battery since ESP® control module is always turned on electricity by the battery voltage.
- When the negative cable at battery or ESP® control module connector is disconnected and reconnected, steering angle sensor calibration is not completed and SLIP indicator light flashes detecting DTC C1075. Be sure to perform sensor calibration. See «SENSOR CALIBRATION OF ESP®»(ref-514554-S22939193582012112100000)
Precautions in Hydraulic Unit Operation Check
ESP® hydraulic unit/control module assembly function is checked by correct wheel lock/release condition when brake pressure is pressurized/depressurized using SUZUKI scan tool. The hydraulic unit operation check referring to ESP® HYDRAULIC UNIT OPERATION CHECK should be performed to confirm the correct brake pipe connection in the following cases.
- ESP® hydraulic unit/control module assembly was replaced.
- Brake pipe and/or hose were replaced.
Warning Light, Indicator Light Description
There are five types of warning light and indicator light in instrument cluster, which are controlled by ESP® control module. They give warning/indication to driver by changing the modes light ON/blinking/light OFF.
Scheme 1
The followings are the condition and operation of warning lights and indicator lights.
| Warning light/Indicator light | Condition and operation |
|---|---|
| ABS warning light | If ABS has abnormality, the light turns "ON". |
| EBD warning light (brake warning light) | If EBD system has abnormality, the light turns "ON". If bake fluid level in reservoir is minimum level, the light turns "ON". Parking brake switch is ON, the light turns "ON". |
| ESP® warning light | If ESP® systems has abnormality, the light turns "ON". |
| SLIP indicator light | If stability control system and traction control system is active, the light blinks at 5 Hz. If Steering angle sensor calibration is incompleted (DTC C1075 is detected) and/or steering angle sensor message data is missing from CAN communication (DTC U0126 is detected), the light blinks at 1 Hz. |
| ESP® OFF light | If ESP® OFF switch is turned "ON", the ESP® OFF light lights up. When it is "ON", traction control and stability control system functions are controlled not to work. |
WARNING LIGHT, INDICATOR LIGHT DESCRIPTION
CAN Communication System Description
Refer to CAN COMMUNICATION SYSTEM DESCRIPTION for CAN communication system description.
Scheme 2
Scheme 3
Connector "E08" (ESP® Control Module Connector)
| Terminal | Circuit | |
|---|---|---|
| E08 | 1 | Power supply for solenoid valve |
| 2 | CAN communication line (high) | |
| 3 | CAN communication line (high) for ECM and TCM (CVT model) | |
| 4 | ||
| 5 | ||
| 6 | Brake light switch | |
| 7 | Right-rear wheel speed sensor (-) | |
| 8 | Ignition switch | |
| 9 | Left-rear wheel speed sensor (+) | |
| 10 | Left-front wheel speed sensor (-) | |
| 11 | ||
| 12 | ||
| 13 | ||
| 14 | Ground | |
| 15 | CAN communication line (low) | |
| 16 | CAN communication line (low) for ECM and TCM (CVT model) | |
| 17 | ||
| 18 | Serial communication line of DLC | |
| 19 | Right-front wheel speed sensor (+) | |
| 20 | Right-rear wheel speed sensor (+) | |
| 21 | Left-rear wheel speed sensor (-) | |
| 22 | Left-front wheel speed sensor (+) | |
| 23 | ||
| 24 | ||
| 25 | ||
| 26 | Power supply for pump motor | |
| 27 | ||
| 28 | ||
| 29 | ||
| 30 | ESP® OFF switch input | |
| 31 | Right-front wheel speed sensor (-) | |
| 32 | ||
| 33 | ||
| 34 | ||
| 35 | ||
| 36 | ||
| 37 | ||
| 38 | Ground for pump motor | |
E08 CONNECTOR TERMINALS REFERENCE CHART
Scheme 4
Scheme 5
Refer to the following items for the details of each step.
| Step | Action | YES | NO |
|---|---|---|---|
| 1 | Malfunction analysis Perform CUSTOMER COMPLAINT ANALYSIS . Perform PROBLEM SYMPTOM CONFIRMATION . Perform DTC CHECK, RECORD AND CLEARANCE and recheck DTC. Is there any malfunction DTC? | Go to Step 4. | Go to Step 2. |
| 2 | Driving test Perform STEP 2: DRIVING TEST . Is trouble symptom identified? | Go to Step 3. | Go to Step 6. |
| 3 | DTC check Perform DTC CHECK . Is it malfunction code? | Go to Step 4. | Go to Step 5. |
| 4 | ESP® check Inspect and repair referring to applicable DTC troubleshooting. Does trouble recur? | Go to Step 5. | Go to Step 7. |
| 5 | Brakes diagnosis Inspect and repair referring to BRAKES SYMPTOM DIAGNOSIS . Does trouble recur? | Go to Step 3. | Go to Step 7. |
| 6 | Intermittent problem check Check intermittent troubles referring to INTERMITTENT AND POOR CONNECTION INSPECTION and related circuit of trouble code recorded in Step 1. Does trouble recur? | Go to Step 4. | Go to Step 7. |
| 7 | Final confirmation test Perform STEP 7: FINAL CONFIRMATION TEST . Does trouble recur? | Go to Step 3. | End. |
ELECTRONIC STABILITY PROGRAM SYMPTOM DIAGNOSIS REFERENCE CHART
ESP® Hydraulic Unit Operation Check
| CAUTION | A false diagnosis may result if operation check of the ESP® hydraulic unit is performed without satisfying all of the specified conditions. Make sure that all the following conditions are met before performing operation check of the ESP® hydraulic unit. No air is trapped in brake system. Battery voltage is 11 V or more. Brakes do not drag. No DTC is stored in ESP® control module. |
Note. Operation check must be performed by 2 persons. Be sure to perform SENSOR CALIBRATION OF ESP® before performing hydraulic unit operation check.
Scheme 6
Scheme 7
- Turn ignition switch to OFF position.
- Connect SUZUKI scan tool to DLC (1) with ignition switch OFF. Special Tool (A): SUZUKI scan tool (SUZUKI-SDT)
- Hoist vehicle until tire can be rotated.
- Set transmission to neutral and release parking brake.
- Turn ignition switch to ON position and select menu "Depressurization check"/"Pressurization check" in "Hydraulic control test" under "Utility" mode of SUZUKI scan tool. Refer to SUZUKI scan tool operators manual for further details.
- Perform the following checks with help of another person. Depressurization check Step on brake pedal (1) and then select testing wheel by SUZUKI scan tool and the wheel (2) should be turned by another person's hand. At this time, check whether the wheel rotates freely due to brake depressurization. Pressurization check Step off brake pedal (1) and then select testing wheel by SUZUKI scan tool and the wheel (2) should be turned by another person's hand. At this time, check whether the wheel locks due to brake pressurization. NOTE: Pressurization/Depressurization by SUZUKI scan tool is available for 0.5 second.
- Check for all 4-wheels condition respectively. If a faulty condition is found, replace hydraulic unit/control module assembly.
- After completing the check, turn ignition switch to OFF position and disconnect SUZUKI scan tool from DLC.