Signal Circuit Inspection

WARNING: This page is about a different variant/trim than selected.

■ Check Short to ground in signal circuit

IG KEY "OFF".
Disconnect ECM connector.
Disconnect ABS/ESC control unit connector.
Measure resistance between speed signal terminal of ECM harness connector and chassis ground.
Specification: Infinite
Is the measured resistance within specification?
YES
- Go to "Check open in harness" as follows.
NO
- Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.

■ Check for open in harness

IG KEY "OFF".
Disconnect ECM connector.
Disconnect ABS/ESC control unit connector.
Measure resistance between speed signal terminal of ECM harness connector and speed signal of ABS (ESC) control module harness connector.
Specification: Infinite
Is the measured resistance within specification?
YES
- Substitute with a known - good ABS (ESC) Control Module and check for proper operation. If the problem is corrected, replace ABS (ESC) Control Module and go to "VERIFICATION OF VEHICLE REPAIR ".
NO
- Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.