Dtc P1570 (Dtc No.21) Abs Signal Circuit Malfunction - Suzuki Jimny Service Manual

6-104 ENGINE GENERAL INFORMATION AND DIAGNOSIS

DTC P1570 (DTC No.21) ABS Signal Circuit Malfunction

CIRCUIT DESCRIPTION
DTC DETECTING CONDITION
• ABS signal input is low when engine start.
DTC CONFIRMATION PROCEDURE
1) Clear DTC, start engine and keep it at idle for 1 min.
2) Select "DTC" mode on scan tool and check DTC.
INSPECTION
Step
1 Was "Engine Diag. Flow Table" performed?
2 1) With the ignition switch ON position, check
voltage between E17-12 terminal of ECM
coupler and ground.
Is voltage within 10 – 14 V?
3 1) Check "G" wire for shorted to ground circuit.
Is "G" wire in good condition?
4 1) Disconnect coupler of ABS control module.
2) Clear DTC.
3) Start engine and check DTC.
Is DTC P1570 (No.21) detected?
Action
POSSIBLE CAUSE
• ABS signal circuit short to ground
• ABS control module
Yes
Go to Step 2.
Intermittent trouble.
If OK, substitute a known-
good ECM and recheck.
Go to Step 4.
Substitute a known-good
ECM and recheck.
No
Go to "Engine Diag. Flow
Table".
Go to Step 3.
Repair or replace.
Substitute a known-good
ABS control module and
recheck.