INSPECTION
Measure the battery voltage and specific gravity of electrolyte.
Standard voltage
12 V or more
Specific gravity
1.260 or more
Scheme 5
DIAGNOSTIC PROCEDURE WITH PHENOMENON
| Phenomenon | Check item | Reference | |
|---|---|---|---|
| 1 | CRUISE switch is not turned ON. (CRUISE indicator does not illuminate.) Or the cruise control is cancelled without CRUISE switch operation. | (1) Perform cruise cancel conditions diagnosis. | Perform the diagnosis according to displayed cancel code. |
| (2) Perform the real-time diagnosis. | Check the input signal of cruise control system. | ||
| (3) Check the cruise control command switch. | Refer to 11 . | ||
| (4) Check the CRUISE indicator. | Refer to CHECK CRUISE INDICATOR LIGHT AND CRUISE SET INDICATOR LIGHT . | ||
| 2 | Cruise control cannot be set. Or the cruise control is cancelled without canceling operation. | (1) Perform cruise cancel conditions diagnosis. | Perform the diagnosis according to displayed cancel code. |
| (2) Perform the real-time diagnosis. | Check the input signal of cruise control system. | ||
| (3) Check the cruise control command switch. | Refer to 11 . | ||
| (4) Check stop light switch and brake switch. | Refer to STOP LIGHT SWITCH . Refer to 12 . | ||
| (5) Check clutch switch. | Refer to CLUTCH SWITCH . Refer to 13 . | ||
| (6) Check the neutral position switch. | Refer to 14 . Refer to 62 . | ||
| (7) Check vehicle speed sensor. | Refer to 22 . | ||
| 3 | SET indicator does not illuminate. | Check the SET indicator. | Refer to CHECK CRUISE INDICATOR LIGHT AND CRUISE SET INDICATOR LIGHT . |
| 4 | Vehicle speed is not held within set speed ±3 km/h (±2 MPH). | Check the vehicle speed sensor. | Refer to 22 . |
| 5 | Vehicle speed does not increase or does not return to set speed after RES/+ switch has been pressed. | (1) Perform the real-time diagnosis. | Check the input signal of cruise control system. |
| (2) Check the RES/+ switch. | Refer to 11 . | ||
| 6 | Vehicle speed does not decrease after SET/- switch has been pressed. | (1) Perform the real-time diagnosis. | Check the input signal of cruise control system. |
| (2) Check the SET/- switch. | Refer to 11 . | ||
| 7 | Cruise control is not released after CANCEL switch has been pressed. | (1) Perform the real-time diagnosis. | Check the input signal of cruise control system. |
| (2) Check the CANCEL switch. | Refer to 11 . | ||
| 8 | Cruise control is not released after brake pedal has been depressed. | (1) Perform the real-time diagnosis. | Check the input signal of cruise control system. |
| (2) Check stop light switch and brake switch. | Refer to 12 . Refer to INSTALLATION . | ||
| 9 | Cruise control is not released after shifting to the neutral position. | (1) Perform the real-time diagnosis. | Check the input signal of cruise control system. |
| (2) Check the neutral position switch. | Refer to 14 . Refer to NEUTRAL POSITION SWITCH . | ||
| 10 | Cruise control is not released after clutch pedal has been depressed. | (1) Perform the real-time diagnosis. | Check the input signal of cruise control system. |
| (2) Check clutch switch. | Refer to 13 . Refer to CLUTCH SWITCH . | ||
TROUBLE SYMPTOM
Cruise control can be set, but the CRUISE indicator and SET indicator do not illuminate.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK CRUISE INDICATOR LIGHT AND CRUISE SET INDICATOR LIGHT. Check the combination meter. Refer to OPERATION . | Do the CRUISE & SET indicators illuminate? | Go to step 2 . | Replace the meter case assembly. Refer to COMBINATION METER . |
| 2 CHECK LAN SYSTEM. Perform the diagnosis for LAN system. Refer to BASIC DIAGNOSTIC PROCEDURE . | Is a DTC of the LAN system detected? | Perform the diagnosis according to DTC for LAN system. | Replace the ECM. |
- Cruise control cannot be set. (Cancelled immediately.)
- Cruise control cannot be released.
Scheme 6
Scheme 7
- 2.5 L model Cruise Control System. See appropriate SYSTEM WIRING DIAGRAM article.
- 3.6 L model Cruise Control System. See appropriate SYSTEM WIRING DIAGRAM article.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK CRUISE CONTROL COMMAND SWITCH CIRCUIT. Remove the driver's airbag module. Refer to REMOVAL . Disconnect the harness connector of cruise control command switch. Turn the ignition switch to ON. Measure the voltage between harness connector terminal and chassis ground. Connector & terminal (ST3) No. 4 (+) - Chassis ground (-): (ST3) No. 3 (+) - Chassis ground (-) | Is the voltage 5 V or more? | Go to step 2 . | Check the harness between cruise control command switch and ECM, and the steering roll connector for open or short circuit, or for poor contact. |
| 2 CHECK CRUISE CONTROL COMMAND SWITCH CIRCUIT. Turn the ignition switch to OFF. Remove the cruise control command switch. Refer to REMOVAL . Measure the resistance between harness connector terminal and chassis ground. Connector & terminal (ST3) No. 2 - Chassis ground | Is the resistance less than 10 ohms? | Go to step 3 . | Check for open circuit between cruise control command switch, ECM, and chassis ground and check the ECM. |
| 3 CHECK CRUISE CONTROL COMMAND SWITCH. Measure the resistance between switch terminals when the cruise control command switch is not depressed. Terminals No. 2 - No. 3 | Is the resistance approx. 4 kohms? | Go to step 4 . | Replace the cruise control command switch. Refer to CRUISE CONTROL COMMAND SWITCH . |
| 4 CHECK CANCEL SWITCH. Turn the ignition switch to OFF. Remove the cruise control command switch. Refer to REMOVAL . Measure the resistance between switch terminals with the CANCEL switch pressed. Terminals No. 2 - No. 3 | Is the resistance approx. less than 1 ohms when the CANCEL switch is pressed? | Go to step 5 . | Replace the cruise control command switch. Refer to CRUISE CONTROL COMMAND SWITCH . |
| 5 CHECK SET/- SWITCH. Measure the resistance between the switch terminals with the SET/- switch pressed. Terminals No. 2 - No. 3 | Is the resistance approx. 250 ohms when the SET/- switch is pressed? | Go to step 6 . | Replace the cruise control command switch. Refer to CRUISE CONTROL COMMAND SWITCH . |
| 6 CHECK RES/+ SWITCH. Measure the resistance between the switch terminals with the RES/+ switch pressed. Terminals No. 2 - No. 3 | Is the resistance approx. 1, 500 ohms when the RES/+ switch is pressed? | Replace the ECM. Refer to ENGINE CONTROL MODULE (ECM) . Refer to ENGINE CONTROL MODULE (ECM) . | Replace the cruise control command switch. Refer to CRUISE CONTROL COMMAND SWITCH . |
12
Detected when brake pedal is depressed or malfunction related to stop light & brake switch occurs.
- Cruise control cannot be set.
- Cruise control cannot be released.
Scheme 8
Scheme 9
- 2.5 L model Cruise Control System. See appropriate SYSTEM WIRING DIAGRAM article.
- 3.6 L model Cruise Control System. See appropriate SYSTEM WIRING DIAGRAM article.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK STOP LIGHT & BRAKE SWITCH. Check the stop light & brake switch. Refer to STOP LIGHT & BRAKE SWITCH . | Is the stop light & brake switch and installation position OK? | Go to step 2 . | Replace the stop light & brake switch. Or adjust the installation position. |
| 2 CHECK STOP LIGHT & BRAKE SWITCH CIRCUIT. Turn the ignition switch to OFF. Disconnect the stop light & brake switch harness connector. Turn the ignition switch to ON. Measure the voltage between harness connector terminal and chassis ground. Connector & terminal (B65) No. 2 (+) - Chassis ground (-) | Is the voltage 10 V or more? | Go to step 3 . | Check fuse No. 8 (in fuse & relay box). Check for open or short in the harness between stop light & brake switch and fuse & relay box. |
| 3 CHECK STOP LIGHT & BRAKE SWITCH CIRCUIT. Measure the voltage between harness connector terminal and chassis ground. Connector & terminal (B65) No. 4 (+) - Chassis ground (-) | Is the voltage 10 V or more? | Go to step 4 . | Check fuse No. 4 (in fuse & relay box). Check for open or short in the harness between stop light & brake switch and fuse & relay box. |
| 4 CHECK STOP LIGHT & BRAKE SWITCH CIRCUIT. Turn the ignition switch to OFF. Disconnect the harness connector of ECM. Measure the resistance between ECM harness connector terminal and stop light & brake switch harness connector terminal. Connector & terminal 2.5 L model (B137) No. 3 - (B65) No. 3: (B137) No. 7 - (B65) No. 1: 3.6 L model (B136) No. 3 - (B65) No. 3: (B136) No. 15 - (B65) No. 1 | Is the resistance less than 10 ohms? | Replace the ECM. Refer to ENGINE CONTROL MODULE (ECM) . Refer to ENGINE CONTROL MODULE (ECM) . | Repair the harness. |
13
Detected when clutch pedal is depressed or malfunction related to clutch switch occurs.
- Cruise control cannot be set.
- Cruise control cannot be released.
Cruise control cannot be set.
Scheme 10
Scheme 11
- 2.5 L model Cruise Control System. See appropriate SYSTEM WIRING DIAGRAM article.
- 3.6 L model Cruise Control System. See appropriate SYSTEM WIRING DIAGRAM article.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK SPECIFICATIONS OF CHECKED VEHICLE. Check the vehicle destination and specification. | Is the vehicle 3.6 L model? | Go to step 2 . | Go to step 5 . |
| 2 CHECK NEUTRAL POSITION SWITCH SIGNAL. Connect the Subaru Select Monitor to data link connector. Turn the ignition switch to ON and run the Subaru Select Monitor. Select {Engine Control System} from the main menu. Then, select the {Current Data Display & Save}. Shift the select lever to "P" or "N" range, and check the signal of the neutral position switch. | If the select lever is in the "P" or the "N" range, is the Subaru Select Monitor Display ON? Or, if in a range other than "P" or "N", is the Subaru Select Monitor display OFF? | Replace the ECM. Refer to ENGINE CONTROL MODULE (ECM) . | Go to step 3 . |
| 3 CHECK TCM OUTPUT VOLTAGE. Turn the ignition switch to ON. Measure the voltage between TCM harness connector terminal and chassis ground. Connector & terminal (B54) No. 11 (+) - Chassis ground (-) | If the select lever is in a range other than "P" or "N" ranges, is the voltage 10 V or more? Or, if in "P" or "N", is the voltage less than 1 V? | Go to step 4 . | Check the TCM. Refer to BASIC DIAGNOSTIC PROCEDURE . |
| 4 CHECK HARNESS BETWEEN TCM AND ECM. Turn the ignition switch to OFF. Disconnect the harness connector from TCM and ECM. Measure the resistance between TCM harness connector terminal and ECM harness connector terminal. Connector & terminal (B136) No. 35 - (B54) No. 11 | Is the resistance less than 10 ohms? | Replace the ECM. Refer to ENGINE CONTROL MODULE (ECM) . | Repair the wiring harness. |
| 5 CHECK TRANSMISSION TYPE. | Is the transmission type CVT? | Go to step 6 . | Go to step 9 . (MT model) |
| 6 CHECK INHIBITOR SWITCH CIRCUIT. Turn the ignition switch to OFF. Disconnect the inhibitor switch harness connector. Turn the ignition switch to ON. Measure the voltage between harness connector terminal and chassis ground. Connector & terminal (T7) No. 6 (+) - Chassis ground (-) | Is the voltage 10 V or more? | Go to step 7 . | Check for open or short in the harness between inhibitor switch and ECM. |
| 7 CHECK INHIBITOR SWITCH CIRCUIT. Turn the ignition switch to OFF. Disconnect the starter motor harness connector. Measure the resistance between inhibitor switch harness connector terminal and starter motor. Connector & terminal (T7) No. 9 - Starter motor | Is the resistance less than 10 ohms? | Go to step 8 . | Repair the harness. |
| 8 CHECK INHIBITOR SWITCH. Remove and check the inhibitor switch. Refer to INHIBITOR SWITCH . | Is the inhibitor switch working normal? | Replace the ECM. Refer to ENGINE CONTROL MODULE (ECM) . | Replace the inhibitor switch. |
| 9 CHECK NEUTRAL POSITION SWITCH CIRCUIT. Turn the ignition switch to OFF. Disconnect the neutral position switch harness connector. Turn the ignition switch to ON. Measure the voltage between harness connector terminal and chassis ground. Connector & terminal (B25) No. 2 (+) - Chassis ground (-) | Is the voltage 10 V or more? | Go to step 10 . | Check for open or short in the harness between neutral position switch and ECM. |
| 10 CHECK NEUTRAL POSITION SWITCH CIRCUIT. Turn the ignition switch to OFF. Measure resistance between harness connector terminal of neutral position switch and chassis ground. Connector & terminal (B25) No. 1 - Chassis ground | Is the resistance less than 10 ohms? | Go to step 11 . | Repair the harness. |
| 11 CHECK NEUTRAL POSITION SWITCH. Remove and check the neutral position switch. Refer to NEUTRAL POSITION SWITCH . | Is the neutral position switch OK? | Replace the ECM. Refer to ENGINE CONTROL MODULE (ECM) . | Replace the neutral position switch. |
15
Detected when CANCEL switch is pressed or malfunction related to CRUISE switch occurs.
- Cruise control cannot be set. (Cancelled immediately.)
- Cruise control cannot be released.
Refer to 11 .
16
Detected when ignition switch is turned to OFF or malfunction related to the ignition switch occurs.
Cruise control cannot be set.
Scheme 12
Scheme 13
- 2.5 L model Cruise Control System. See appropriate SYSTEM WIRING DIAGRAM article.
- 3.6 L model Cruise Control System. See appropriate SYSTEM WIRING DIAGRAM article.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK IGNITION SWITCH CIRCUIT. Turn the ignition switch to OFF. Disconnect the ECM harness connector. Turn the ignition switch to ON. Measure the voltage between harness connector terminal and chassis ground. Connector & terminal 2.5 L model (B137) No. 27 (+) - Chassis ground (-): 3.6 L model (B136) No. 30 (+) - Chassis ground (-) | Is the voltage 10 V or more? | Check for poor contact of ECM connector. | Check fuse No. 12 (in fuse & relay box). Check the harness for open or short circuit between ignition switch and ECM. |
21
Cruise control command switch malfunction is detected.
- Cruise control cannot be set. (Cancelled immediately.)
- Cruise control cannot be released.
Refer to 11 .
22
Malfunction related to vehicle speed sensor is detected.
DIAGNOSIS
Open or shorted circuit in vehicle speed sensor system.
Cruise control cannot be set. (Cancelled immediately.)
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK ABS OR VDC WARNING LIGHT. Turn the ignition switch to ON. After the initial operation of combination meter is completed, check if ABS or VDC warning light continues to illuminate. | Does the warning light continue to illuminate? | Check the VDCCM. Refer to BASIC DIAGNOSTIC PROCEDURE . | Go to step 2 . |
| 2 CHECK DTC OF LAN COMMUNICATION CIRCUIT. Read the DTC of body integrated unit using Subaru Select Monitor. | Is DTC displayed? | Perform inspection according to DTC. | Replace the ECM. Refer to ENGINE CONTROL MODULE (ECM) . Refer to ENGINE CONTROL MODULE (ECM) . |
24
Malfunction in cruise control-related switch is detected.
- Cruise control cannot be set. (Cancelled immediately.)
- Cruise control cannot be released.
Refer to 11 .
31
Engine speed signal malfunction is detected.
Abnormal increase of engine speed is detected.
Gear is placed in 1st or Reverse position.
After driving at the 2nd gear position or higher, perform the cruise setting again. If a cancel code is not detected, it is normal.
32
This DTC is detected out of vehicle speed range.
Increase vehicle speed high enough to allow the cruise control to function, and then perform setting operation again.
If cancel code is still detected after setting cruise again, perform the diagnosis for DTC 22.
Refer to 22 .
34
The vehicle has been driven at a speed higher than set speed for a long time (approximately 10 minutes) during cruise driving.
This cancel code is detected when driving for a long period of time at a speed higher than appropriate for cruise control setting by operating the accelerator pedal.
Perform the cruise control setting operation again. If the cancel code is not detected, it is normal.
35
Detected when it is impossible to perform the vehicle speed feedback.
Set vehicle speed cannot be kept for some reasons (steep uphill, unreleased parking brake, etc.) during cruise driving.
Cancel code is detected when driving conditions are not suitable for cruise control.
Perform cruise set operation again after clearing the possible cause.
41
VDC/TCS/EPB is operated.
Vehicle dynamics control (VDC) or TCS/EPB is operated during cruise driving or cruise setting. Refer to PROCEDURE .
43
Malfunction of ABS/VDC is detected.
VDC malfunction is detected during cruise driving or cruise setting.
Refer to PROCEDURE .
44
Body integrated unit malfunction is detected.
Body integrated unit system malfunction is detected during cruise driving or cruise setting.
Refer to PROCEDURE .
45
Malfunction of the combination meter is detected.
Combination meter malfunction is detected during cruise driving or cruise setting.
Refer to PROCEDURE .
49
Automatic transmission malfunction is detected.
Automatic transmission malfunction is detected during cruise driving or cruise setting. Refer to PROCEDURE . Refer to PROCEDURE .
61
Malfunction in the stop light & brake switch is detected.
- Cruise control cannot be set.
- Cruise control cannot be released.
Refer to 12 .
62
Neutral position switch malfunction is detected.
Cruise control cannot be set.
Refer to 14 .
63
Malfunction of vehicle speed signal variation is detected.
Cruise control cannot be set. (Cancelled immediately.)
Refer to 22 .
64
Malfunction related to engine is detected.
Refer to PROCEDURE .
Refer to PROCEDURE .
65
Cruise control command switch malfunction is detected.
While the command switch is pressed ON for a long time (approximately two minutes), stuck ON condition is detected.
- Cruise control cannot be set. (Cancelled immediately.)
- Cruise control cannot be released.
Refer to 11 .
66
Cruise control calculation malfunction is detected.
Refer to PROCEDURE .
Refer to PROCEDURE .