ESP® Warning Light Comes ON Steady: Troubleshooting

Step	Action	Yes	No
1	Perform diagnostic trouble code check. Is there any DTC(s)?	Go to applicable DTC diag. flow.	Go to Step 2.
2	Are main fuses for pump motor and solenoid valves in good condition?	Go to Step 3.	Replace fuse and check circuit for short to ground.
3	Turn ignition switch to OFF. Disconnect ESP® control module connector. Check for proper connection to ESP® control module connector at terminals "E53-39", "E53-16" and "E53-47". If OK then turn ignition switch to ON position and measure voltage between terminal "E53-35" and vehicle body ground. Is it 10 - 14 V?	Go to Step 4.	"GRN/ORN" circuit open.
4	Turn ignition switch to OFF position. Check for proper connection to ESP® control module connector at terminals "E53-1" and "E53-32". If OK then turn ignition switch to ON position and measure voltage between each terminal of "E53-1", "E53-32" and vehicle body ground. Are they 10 - 14 V?	Go to Step 5.	"WHT/RED" and/or "WHT/BLU" circuit open.
5	Turn ignition switch to OFF and measure resistance between each terminal of "E53-16", "E53-47" and vehicle body ground. Is resistance less than 2 Ω?	Go to Step 6.	Ground circuit for ESP® control module open or high resistance.
6	Check CAN communication circuit between combination meter and ESP® control module. Refer to CAN DTC (LOST COMMUNICATION AND COMMUNICATION BUS OFF) TABLE . Is CAN communication circuit in good condition?	Substitute a known-good combination meter and recheck. If ABS warning light remains ON, substitute a known-good ESP® hydraulic unit/control module assembly and recheck.	Repair or replace.