DTC: 16:Er11, 16:Er12, 26:Er81 [AUDIO UNIT]

id09021q453700

Description

•  16:Er11

―  CAN communication time-out

•  16:Er12

―  Unit communication error

•  26:Er81

―  Communication error with Bluetooth^® unit

Detection condition

•  16:Er11

―  Time-out occurs in the audio unit CAN signal.

•  16:Er12

―  The audio unit cannot receive CAN signal.

•  26:Er81

―  The audio unit cannot receive CAN signal from the Bluetooth^® unit.

Fail-safe

•  16:Er11

―  Not applicable

•  16:Er12

―  Not applicable

•  26:Er81

―  Not applicable

Possible cause

•  Audio unit connector or terminal malfunction

•  CD player connector or terminal malfunction (With CD player)

•  Bluetooth^® unit connector or terminal malfunction (With Bluetooth^® unit)

•  Connector C-14 connector or terminal malfunction

•  Connector C-16 connector or terminal malfunction (With Bluetooth^® unit)

•  Connector C-41 connector or terminal malfunction

•  Short to power supply in wiring harness between the following terminals:

―  Audio unit terminal 1O—CD player terminal G (With CD player)

―  Audio unit terminal 1O—Bluetooth^® unit terminal Y (With Bluetooth^® unit)

•  Short to ground in wiring harness between the following terminals:

―  Audio unit terminal 1Q—CD player terminal H (With CD player)

―  Audio unit terminal 1Q—Bluetooth^® unit terminal Z (With Bluetooth^® unit)

•  Short between circuits in the following wiring harness:

―  Audio unit terminal 1O—CD player terminal G (With CD player)

―  Audio unit terminal 1Q—CD player terminal H (With CD player)

―  Audio unit terminal 1O—Bluetooth^® unit terminal Y (With Bluetooth^® unit)

―  Audio unit terminal 1Q—Bluetooth^® unit terminal Z (With Bluetooth^® unit)

•  Open circuit in wiring harness between the following terminals:

―  Audio unit terminal 1O—CD player terminal G (With CD player)

―  Audio unit terminal 1Q—CD player terminal H (With CD player)

―  Audio unit terminal 1O—Bluetooth^® unit terminal Y (With Bluetooth^® unit)

―  Audio unit terminal 1Q—Bluetooth^® unit terminal Z (With Bluetooth^® unit)

•  CD player malfunction (With CD player)

•  Bluetooth^® unit malfunction (With Bluetooth^® unit)

•  Audio unit malfunction

Description	• 16:Er11 ― CAN communication time-out • 16:Er12 ― Unit communication error • 26:Er81 ― Communication error with Bluetooth^® unit
Detection condition	• 16:Er11 ― Time-out occurs in the audio unit CAN signal. • 16:Er12 ― The audio unit cannot receive CAN signal. • 26:Er81 ― The audio unit cannot receive CAN signal from the Bluetooth^® unit.
Fail-safe	• 16:Er11 ― Not applicable • 16:Er12 ― Not applicable • 26:Er81 ― Not applicable
Possible cause	• Audio unit connector or terminal malfunction • CD player connector or terminal malfunction (With CD player) • Bluetooth^® unit connector or terminal malfunction (With Bluetooth^® unit) • Connector C-14 connector or terminal malfunction • Connector C-16 connector or terminal malfunction (With Bluetooth^® unit) • Connector C-41 connector or terminal malfunction • Short to power supply in wiring harness between the following terminals: ― Audio unit terminal 1O—CD player terminal G (With CD player) ― Audio unit terminal 1O—Bluetooth^® unit terminal Y (With Bluetooth^® unit) • Short to ground in wiring harness between the following terminals: ― Audio unit terminal 1Q—CD player terminal H (With CD player) ― Audio unit terminal 1Q—Bluetooth^® unit terminal Z (With Bluetooth^® unit) • Short between circuits in the following wiring harness: ― Audio unit terminal 1O—CD player terminal G (With CD player) ― Audio unit terminal 1Q—CD player terminal H (With CD player) ― Audio unit terminal 1O—Bluetooth^® unit terminal Y (With Bluetooth^® unit) ― Audio unit terminal 1Q—Bluetooth^® unit terminal Z (With Bluetooth^® unit) • Open circuit in wiring harness between the following terminals: ― Audio unit terminal 1O—CD player terminal G (With CD player) ― Audio unit terminal 1Q—CD player terminal H (With CD player) ― Audio unit terminal 1O—Bluetooth^® unit terminal Y (With Bluetooth^® unit) ― Audio unit terminal 1Q—Bluetooth^® unit terminal Z (With Bluetooth^® unit) • CD player malfunction (With CD player) • Bluetooth^® unit malfunction (With Bluetooth^® unit) • Audio unit malfunction

Caution

• When disconnecting the connector, verify that there is no looseness, damage, deformation, corrosion, or poor connection of the connector terminals.

Diagnostic Procedure

Step	Inspection		Action
1	INSPECT FOR POWER SUPPLY-RELATED MALFUNCTION • Switch the ignition ON (engine off). • Perform the DTC inspection using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 1.5, SKYACTIV-G 2.0)].) (See DTC INSPECTION [i-ELOOP].) • Is the power supply related DTC displayed?	Yes	Note • It may be affected by power supply-related malfunction. Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-G 1.5, SKYACTIV-G 2.0)].) (See DTC TABLE [i-ELOOP].)
1		No	Go to the next step.
2	INSPECT CAN_H SIDE CIRCUIT OF LOCAL MS-CAN FOR SHORT TO POWER SUPPLY • Measure the voltage between audio unit terminal 1O (LOCAL MS-CAN CAN_H side) and body ground. • Is the voltage B+?	Yes	A short to power supply in CAN_H side of LOCAL MS-CAN has occurred. • Go to Step 5.
2		No	Go to the next step.
3	INSPECT CAN_L SIDE CIRCUIT OF LOCAL MS-CAN FOR SHORT TO GROUND • Measure the voltage between audio unit terminal 1Q (LOCAL MS-CAN CAN_L side) and body ground. • Is the voltage 0 V?	Yes	A short to ground in CAN_L side of LOCAL MS-CAN has occurred. • Go to Step 6.
3		No	Go to the next step.
4	INSPECT BETWEEN LOCAL MS-CAN_L AND LOCAL MS-CAN_H SIDE CIRCUITS FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) • Measure the resistance between audio unit 1O and 1Q terminals (wiring harness-side). • Is the resistance approx. 60 ohms?	Yes	Go to Step 9. (LOCAL MS-CAN is normal)
4		No	If the resistance is 0 ohm: • A short between circuits has occurred in LOCAL MS-CAN. ― Go to Step 7. If the resistance is 120 ohms: • An open circuit in the LOCAL MS-CAN has occurred. ― Go to Step 8.
5	INSPECT RELATED WIRING HARNESS (SHORT TO POWER SUPPLY) • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) • Disconnect the following connectors: ― Audio unit ― CD player (With CD player) ― Bluetooth^® unit (With Bluetooth^® unit) • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) • Switch the ignition ON (engine off or on). • Measure the voltage at the following terminals (wiring harness-side). ― Audio unit terminal 1O ― CD player terminal G (With CD player) ― Bluetooth^® unit terminal Y (With Bluetooth^® unit) • Is the voltage 0 V?	Yes	Go to Step 9.
5		No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Audio unit terminal 1O—CD player terminal G (With CD player) • Audio unit terminal 1O—Bluetooth^® unit terminal Y (With Bluetooth^® unit) If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to power supply. Go to Step 11.
6	INSPECT RELATED WIRING HARNESS (SHORT TO GROUND) • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) • Disconnect the following connectors: ― Audio unit ― CD player (With CD player) ― Bluetooth^® unit (With Bluetooth^® unit) • Inspect for continuity between the following terminals (wiring harness-side) and body ground: ― Audio unit terminal 1Q ― CD player terminal H (With CD player) ― Bluetooth^® unit terminal Z (With Bluetooth^® unit) • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Audio unit terminal 1Q—CD player terminal H (With CD player) • Audio unit terminal 1Q—Bluetooth^® unit terminal Z (With Bluetooth^® unit) If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. Go to Step 11.
6		No	Go to Step 9.
7	INSPECT RELATED WIRING HARNESS (LINE-TO-LINE SHORT CIRCUIT) • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) • Disconnect the following connectors: ― Audio unit ― CD player (With CD player) ― Bluetooth^® unit (With Bluetooth^® unit) • Inspect between the following terminals (wiring harness-side) for continuity. ― Audio unit terminal 1O and 1Q ― CD player terminal G and H (With CD player) ― Bluetooth^® unit terminal Y and Z (With Bluetooth^® unit) • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Audio unit terminal 1O—CD player terminal G (With CD player) • Audio unit terminal 1Q—CD player terminal H (With CD player) • Audio unit terminal 1O—Bluetooth^® unit terminal Y (With Bluetooth^® unit) • Audio unit terminal 1Q—Bluetooth^® unit terminal Z (With Bluetooth^® unit) If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short between circuits. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has shorted between circuits. Go to Step 11.
7		No	Go to Step 9.
8	INSPECT RELATED WIRING HARNESS (OPEN CIRCUIT) • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) • Disconnect the following connectors: ― Audio unit ― CD player (With CD player) ― Bluetooth^® unit (With Bluetooth^® unit) • Inspect for continuity between the following terminals (wiring harness-side): ― Audio unit terminal 1O—CD player terminal G (With CD player) ― Audio unit terminal 1Q—CD player terminal H (With CD player) ― Audio unit terminal 1O—Bluetooth^® unit terminal Y (With Bluetooth^® unit) ― Audio unit terminal 1Q—Bluetooth^® unit terminal Z (With Bluetooth^® unit) • Is there continuity?	Yes	Go to Step 9.
8		No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Audio unit terminal 1O—CD player terminal G (With CD player) • Audio unit terminal 1Q—CD player terminal H (With CD player) • Audio unit terminal 1O—Bluetooth^® unit terminal Y (With Bluetooth^® unit) • Audio unit terminal 1Q—Bluetooth^® unit terminal Z (With Bluetooth^® unit) If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to Step 11.
9	VERIFY IF MALFUNCTIONING LOCATION IS CD PLAYER DEPENDING ON REPEATABILITY Note • For vehicles without the CD player, go to the next step. • Always reconnect all disconnected connectors. • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) • Clear the audio unit DTCs. (See CLEARING DTC [AUDIO UNIT].) • Perform the audio unit DTC inspection. (See DTC INSPECTION [AUDIO UNIT].) • Is the same DTC displayed?	Yes	Replace the CD player, then go to the next step. (See CD PLAYER REMOVAL/INSTALLATION.)
9		No	Go to Step 12.
10	VERIFY IF MALFUNCTIONING LOCATION IS Bluetooth^® UNIT DEPENDING ON REPEATABILITY Note • For vehicles without the Bluetooth^® unit, go to the next step. • Always reconnect all disconnected connectors. • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) • Clear the DTC for the Bluetooth^® unit. (See CLEARING DTC [AUDIO UNIT].) • Perform the DTC inspection for the Bluetooth^® unit. (See DTC INSPECTION [AUDIO UNIT].) • Is the same DTC displayed?	Yes	Replace the Bluetooth^® unit, then go to the next step. (See Bluetooth® UNIT REMOVAL/INSTALLATION.)
10		No	Go to Step 12.
11	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Always reconnect all disconnected connectors. • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.) • Clear the DTC for the audio unit. (See CLEARING DTC [AUDIO UNIT].) • Perform the audio unit DTC inspection. (See DTC INSPECTION [AUDIO UNIT].) • Is the same DTC displayed?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the audio unit. (See AUDIO UNIT REMOVAL/INSTALLATION.) Go to the next step.
11		No	Go to the next step.
12	VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [AUDIO UNIT].)
12		No	DTC troubleshooting completed.