Electronic Stability Program: 4F-27
4 Check ESP® control module power supply circuit
1) Turn ignition switch to OFF position.
2) Check for proper connection to ESP® control module
connector at terminals “E85-1” and “E85-32”.
3) If OK, then turn ignition switch to ON position and
measure voltage between each terminal of “E85-1”,
“E85-32” and vehicle body ground.
Are they 10 – 14 V?
Go to Step 5. “WHT/BLU” and/or
“WHT/RED” wire circuit
open.
5 Check ESP® control module ground circuit
1) Turn ignition switch to OFF position.
2) Check for proper connection to ESP® control module
connector at terminals “E85-16” and “E85-47”.
3) If OK, measure resistance between each terminal of
“E85-16”, “E85-47” and vehicle body ground.
Are resistance less than 2
Ω
?
Go to Step 6. Ground circuit for ESP®
control module open or
high resistance.
6 Check serial data circuit
1) Check if communication is possible by trying
communication with other controller (ECM, BCM, P/S
control module or SDM).
Is it possible to communicate with other controller?
Go to Step 7. Repair open in common
section of serial data
circuit (“PPL/WHT” wire
circuit) used by all
controllers or short to
ground or power circuit
which has occurred
somewhere in serial
data circuit (“PPL/WHT”
wire circuit).
7 Check DLC power supply circuit
1) Turn ignition switch to ON position.
2) Measure voltage between terminal B of data link
connector and vehicle body ground.
Is voltage 10 – 12 V?
Go to step 8. Terminal B circuit open
or shorted to ground.
8 Check DLC ground circuit
1) Turn ignition switch to OFF position.
2) Measure resistance between the following terminals;
• Terminal G of data link connector and vehicle body
ground.
• Terminal G1 of data link connector and vehicle body
ground.
Is each resistance 1
Ω
or less?
Go to step 9. Terminal G and/or G1
circuit open or high
resistance.
Step Action Yes No
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