DTC B1317, B1318 [DYNAMIC STABILITY CONTROL (DSC)]

id0402b2800300

DTC

B1317, B1318

Power supply system

DETECTION CONDITION

•  B1317

―  High ignition voltage (16 V or more) is detected at the voltage monitor of the solenoid valve or motor monitor.

•  B1318

―  When driving the vehicle at 20 km/h {12.4 mph} or more, low ignition voltage (10 V or less) is detected at the voltage monitor of the solenoid valve or motor monitor.

POSSIBLE CAUSE

•  ABS 1 30A/ABS 2 20A/ABS IG 10A fuse malfunction

•  Open or short circuit in the wiring harness between DSC HU/CM terminal AK and battery

•  Open or short circuit in the wiring harness between DSC HU/CM terminal AU and battery

•  Open or short circuit in the wiring harness between DSC HU/CM terminal AT and battery

•  Open circuit in the wiring harness between DSC HU/CM terminal A and body ground

•  Open circuit in the wiring harness between DSC HU/CM terminal B and body ground

•  Battery deterioration

•  Generator malfunction

•  Poor connection at connectors (female terminal)

Diagnostic procedure

STEP	INSPECTION		ACTION
1	INSPECT BATTERY VOLTAGE • Is the battery terminal voltage normal?	Yes	Verify that the battery terminal connection is normal. Go to the next step.
1		No	Recharge or replace the battery, then go to Step 6. (See BATTERY RECHARGING [ZJ, ZY, Z6].) (See BATTERY RECHARGING [LF, L3].) (See BATTERY RECHARGING [L3 Turbo].) (See BATTERY RECHARGING [MZ-CD 1.6 (Y6)].) (See BATTERY RECHARGING [MZR-CD (RF Turbo)].) (See BATTERY REMOVAL/INSTALLATION [ZJ, ZY, Z6].) (See BATTERY REMOVAL/INSTALLATION [LF, L3].) (See BATTERY REMOVAL/INSTALLATION [L3 Turbo].) (See BATTERY REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6)].) (See BATTERY REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
2	INSPECT BATTERY GRAVITY • Is the battery specific gravity as specified?	Yes	Go to the next step.
2		No	Replace the battery, then go to Step 6. (See BATTERY REMOVAL/INSTALLATION [ZJ, ZY, Z6].) (See BATTERY REMOVAL/INSTALLATION [LF, L3].) (See BATTERY REMOVAL/INSTALLATION [L3 Turbo].) (See BATTERY REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6)].) (See BATTERY REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
3	INSPECT CHARGING SYSTEM • Are the generator and the drive belt tensions normal?	Yes	Go to the next step.
3		No	Replace the generator and/or drive belt if necessary. (See GENERATOR REMOVAL/INSTALLATION [ZJ, ZY, Z6].) (See GENERATOR REMOVAL/INSTALLATION [LF, L3].) (See GENERATOR REMOVAL/INSTALLATION [L3 Turbo].) (See GENERATOR REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6)].) (See GENERATOR REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].) (See DRIVE BELT REPLACEMENT [ZJ, ZY, Z6].) (See DRIVE BELT REPLACEMENT [LF, L3].) (See DRIVE BELT REMOVAL/INSTALLATION [L3 Turbo].) (See DRIVE BELT REPLACEMENT [MZ-CD 1.6 (Y6)].) (See DRIVE BELT REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].) Go to Step 6.
4	INSPECT DSC HU/CM POWER SUPPLY FOR OPEN CIRCUIT • Disconnect the DSC HU/CM connectors. • Turn the ignition switch to the ON position. • Measure the voltage between following connector terminals of the DSC HU/CM (vehicle harness-side) and body ground: ― DSC HU/CM: AK—Body ground ― DSC HU/CM: AU—Body ground ― DSC HU/CM: AT—Body ground • Is the voltage 10 V or more?	Yes	Go to the next step.
4		No	Repair or replace the wiring harness, then go to Step 6.
5	INSPECT DSC HU/CM GROUND FOR POOR GROUND OR OPEN CIRCUIT • Turn the ignition switch off. • Measure the resistance between following connector terminals of the DSC HU/CM (vehicle harness-side) and body ground: ― DSC HU/CM: A—Body ground ― DSC HU/CM: B—Body ground • Is the resistance within 0—1 ohm?	Yes	Go to the next step.
5		No	If there is open circuit: • Repair or replace the wiring harness, then go to the next step. If resistance is not within specification: • Repair or replace the wiring harness for poor ground, then go to the next step.
6	VERIFY THAT THE SAME DTC IS NOT PRESENT • Reconnect all disconnected connectors. • Clear the DTCs from the memory. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].) • Start the engine and drive the vehicle at 20 km/h {12.4 mph} or more. • Are the same DTCs present?	Yes	Repeat the inspection from Step 1.
6		No	Go to the next step.
7	VERIFY THAT NO OTHER DTCS ARE PRESENT • Are any other DTCs output?	Yes	Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)
7		No	DTC troubleshooting completed.

DTC	B1317, B1318		Power supply system
DETECTION CONDITION		• B1317 ― High ignition voltage (16 V or more) is detected at the voltage monitor of the solenoid valve or motor monitor. • B1318 ― When driving the vehicle at 20 km/h {12.4 mph} or more, low ignition voltage (10 V or less) is detected at the voltage monitor of the solenoid valve or motor monitor.
POSSIBLE CAUSE		• ABS 1 30A/ABS 2 20A/ABS IG 10A fuse malfunction • Open or short circuit in the wiring harness between DSC HU/CM terminal AK and battery • Open or short circuit in the wiring harness between DSC HU/CM terminal AU and battery • Open or short circuit in the wiring harness between DSC HU/CM terminal AT and battery • Open circuit in the wiring harness between DSC HU/CM terminal A and body ground • Open circuit in the wiring harness between DSC HU/CM terminal B and body ground • Battery deterioration • Generator malfunction • Poor connection at connectors (female terminal)