Honda Civic. Manual — part 703

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Check for DTCs with the HDS.

Is DTC B1160 indicated?

YES - Go to step 5.

NO - Intermittent failure. The gauge control module is OK at this time. Check
for loose or poor connections. If the connections are good, check the battery
condition (see BATTERY TEST ), and the charging system.

4. Check for DTCs with the HDS.

Are DTCs B1160 or B1905 also indicated?

YES - Faulty MICU; replace the under-dash fuse/relay box.

NO - Replace the gauge control module (tach).

DTC B1168: GAUGE CONTROL MODULE LOST COMMUNICATION WITH ECM/PCM (ENGINE
MESSAGES); DTC B1169: GAUGE CONTROL MODULE LOST COMMUNICATION WITH THE
PCM (A/T MESSAGES); DTC B1170: GAUGE CONTROL MODULE LOST COMMUNICATION
WITH THE ABS/VSA MODULATOR-CONTROL UNIT (ABS/VSA MESSAGE); DTC B1178: F-CAN
COMMUNICATION LINE ERROR; DTC B1187: GAUGE CONTROL MODULE LOST
COMMUNICATION WITH THE SRS UNIT (SRS MESSAGE)

1. Clear the DTCs using the HDS.

NOTE:

If you are troubleshooting multiple DTCs, be sure to follow
the instructions in B-CAN System Diagnosis Test Mode A
(see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS
TEST MODE A ).

NOTE:

If you are troubleshooting multiple DTCs, be sure to follow
the instructions in B-CAN System Diagnosis Test Mode A
(see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS
TEST MODE A ).

2008 Honda Civic EX

2006-08 ACCESSORIES & EQUIPMENT Gauges - Civic (All Except Hybrid)

2. Turn the ignition switch OFF, and then back ON (II).
3. Start and run the engine for at least 5 seconds then turn the engine off.
4. Check for DTCs with the HDS.

Is DTC B1168, B1169, B1170, B1178, and/or B1187 indicated?

YES - Go to step 5.

NO - Intermittent failure, the F-CAN communication line is OK at this time.
Check for loose or poor connections. If the connections are good, check the
battery condition (see BATTERY TEST ), and the charging system.

5. Check for DTCs in the ECM/PCM or ABS/VSA.

Are any DTCs indicated?

YES - Troubleshoot the ECM/PCM or ABS/VSA.

NO - Go to step 6.

6. Do the Gauge Control Module Input Test (see GAUGE CONTROL

MODULE (TACH) INPUT TEST ).

Are all inputs OK?

YES - Go to step 7.

NO - Repair the faulty input then recheck for DTCs.

7. Substitute a known-good gauge control module (tach).
8. Clear the DTCs with the HDS.
9. Turn the ignition switch OFF, and then back ON (II).

10. Start and run the engine for at least 5 seconds then turn the engine off.
11. Check for DTCs with the HDS.

Is DTC B1168, B1169, B1170, B1178, and/or B1187 indicated?

2008 Honda Civic EX

2006-08 ACCESSORIES & EQUIPMENT Gauges - Civic (All Except Hybrid)

YES - Substitute a known-good ECM/PCM and retest. If the system/indication
goes away, replace the original ECM/PCM.

NO - The original gauge control module (tach) is faulty; replace the gauge
control module (tach) (see TACHOMETER ).

DTC B1173: GAUGE CONTROL MODULE LOST COMMUNICATION WITH THE TPMS
CONTROL UNIT (TPMS MESSAGE)

1. Clear the DTCs using the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS.

Is DTC B1173 indicated?

YES - Go to step 5.

NO - Intermittent failure, the system is OK at this time. Check for loose or
poor connections.

5. Turn the ignition switch OFF.
6. Disconnect the gauge control module (tach) 36P connector.
7. Disconnect the TPMS control unit 20P connector.
8. Check for continuity between the gauge control module (tach) 36P connector

No. 1 and No. 19 and TPMS control unit 20P connector No. 2 and No. 11
terminals individually.

NOTE:

If you are troubleshooting multiple DTCs, be sure to follow
the instructions in B-CAN System Diagnosis Test Mode A
(see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS
TEST MODE A ).

2008 Honda Civic EX

2006-08 ACCESSORIES & EQUIPMENT Gauges - Civic (All Except Hybrid)

Fig. 15: Checking Continuity Between Gauge Control Module & TPMS
Control Module
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Substitute a known-good TPMS control unit and recheck. If DTC
B1183 is still indicated, replace the gauge control module (tach).

NO - Repair an open in the wire.

DTC B1175: FUEL LEVEL SENSOR (FUEL GAUGE SENDING UNIT) CIRCUIT OPEN

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Wait for 30 seconds.

NOTE:

If you are troubleshooting multiple DTCs, be sure to follow
the instructions in B-CAN System Diagnosis Test Mode A
(see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS
TEST MODE A ).

2008 Honda Civic EX

2006-08 ACCESSORIES & EQUIPMENT Gauges - Civic (All Except Hybrid)