LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Suzuki >> 2013 >> Kizashi Base, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 72 (Keyless Start System) >> Diagnostics Information and Procedures >> DTC B1160: Steering Lock Unit Communication Error >> DTC Troubleshooting
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Troubleshooting

WARNING: This page is about a different car, the 2010 Suzuki Kizashi. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: This DTC might be detected when battery is run down or the voltage is very low.
DIAGNOSIS PROCEDURE

Step Action YES NO
1  Steering lock unit simply check 
  1. Confirm that ignition mode of keyless push start system is "OFF".
  2. Push engine switch to change ignition mode to "ON".
  3. Repeat Step  1) and  2) several times.
  4. Check that steering lock is locked/unlocked according to change of ignition mode.

Is it in good condition? 		 Intermittent trouble. Go to Step 2.
2  Steering lock unit power supply circuit check 
  1. Push engine switch to change ignition mode to "OFF".
  2. Disconnect steering lock unit connector.
  3. Check for proper terminal connection to steering lock unit connector.
  4. If connections are OK, check that voltage between "A2" circuit terminal and "C1" circuit terminal of steering lock unit connector shows battery voltage instantaneously when ignition mode is switched from "OFF" to "ON".

Is it in good condition? 		 Go to Step 5. Go to Step 3.
3  Steering lock unit ground circuit check 
  1. Check that voltage between "A2" circuit terminal of steering lock unit connector and ground shows battery voltage instantaneously when ignition mode is switched from "OFF" to "ON".

Is it in good condition? 		 Repair or replace "C1" circuit. Go to Step 4.
4  Steering lock unit power supply circuit check 
  1. Push engine switch to change ignition mode to "OFF".
  2. Disconnect "G04" connector.
  3. Check for proper terminal connection to "G04" connector.
  4. If connections are OK, check the following points.
    • Resistance of "A2" circuit: less than 3 Ω
    • Resistance between "A2" circuit and ground: infinity
    • Resistance between "A2" circuit terminal and each terminal at steering lock unit connector: infinity

Are they in good condition? 		 Replace keyless start control module and recheck DTC, see Keyless Start Control Module Removal and Installation .. Repair or replace defective wire harness.
5  Steering lock unit signal circuit check 
  1. Push engine switch to change ignition mode to "OFF".
  2. Disconnect "G04" connector.
  3. Check for proper terminal connection to "G04" connector.
  4. If connections are OK, check the following points.
    • Resistance of "B1" circuit: less than 3 Ω
    • Resistance between "B1" circuit and ground: infinity
    • Resistance between "B1" circuit terminal and each terminal at steering lock unit connector: infinity

Are they in good condition? 		 Go to Step 6. Repair or replace defective wire harness.
6  DTC check 
  1. Replace steering lock unit, see AUTO STEERING LOCK UNIT REMOVAL AND INSTALLATION .
  2. Perform DTC CONFIRMATION PROCEDURE  and then recheck DTC.

Is DTC B1160 still detected? 		 Replace keyless start control module and recheck DTC, see Keyless Start Control Module Removal and Installation .. End. (Steering lock unit was faulty.)
scientia non olet · About LEMON Manuals