EPS Indicator Circuit Troubleshooting

Turn the ignition switch ON (II), start the engine, and watch the EPS indicator.
Does the EPS indicator come on ?
1. YES -If the EPS indicator comes on and goes off, it's OK. If the EPS indicator stays on or blinks, go to step 9.
2. NO -Go to step 2.
Turn the ignition switch OFF, then ON (II) again, and watch the brake system indicator.
Does the brake system indicator come on ?
1. YES -Go to step 3.
2. NO -Repair open in the indicator power source circuit:
  - Blown No. 6 (7.5 A) fuse in the under-dash fuse/ relay box.
  - Open in the wire between the No. 6 (7.5 A) fuse and gauge assembly.
  - Open circuit inside the under-dash fuse/relay box.
Turn the ignition switch OFF.
Connect a jumper wire between the gauge assembly 22P connector terminal No. 2 and body ground, then turn the ignition switch ON (II).

Fig 1: Connecting Jumper Wire Between Gauge Assembly 22P Connector Terminal No. 2 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Does EPS indicator come on ?
1. YES -Go to step 5.
2. NO -Inspect the EPS indicator bulb, if the bulb is OK, replace the gauge assembly (see VSS REPLACEMENT ).
Turn the ignition switch OFF.
Disconnect the EPS control unit connector B (14P).
Turn the ignition switch ON (II).
Connect the EPS control unit connector B (14P) terminal No. 13 to body ground with a jumper wire.

Fig 2: Connecting EPS Control Unit Connector B (14P) Terminal No. 13 To Body Ground With A Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Does EPS indicator come on ?
1. YES -Check for loose or poor connections at the EPS control unit. If the connections are good, substitute a known-good EPS control unit. If the symptom/indication goes away, replace the original EPS control unit and recheck.
2. NO -Repair open in the wire between the gauge assembly and EPS control unit.
Turn the ignition switch OFF.
Disconnect the EPS control unit connector B (14P).
Turn the ignition switch ON (II).
Does EPS indicator come on ?
1. YES -Repair short to ground in the YEL/RED wire between the gauge assembly and the EPS control unit, or replace the gauge assembly (see GAUGE ASSEMBLY REPLACEMENT ).
2. NO -Go to step 12.
Measure the voltage between the EPS control unit connector B (14P) terminal No. 6 and body ground.

Fig 3: Measuring Voltage Between EPS Control Unit Connector B (14P) Terminal No. 6 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage ?
1. YES -Go to step 13.
2. NO -Repair open in the wire between the EPS control unit connector B (14P) and No. 6 (7.5 A) fuse.
Measure the voltage between the EPS control unit connector B (14P) terminal No. 2 and body ground.

Fig 4: Measuring Voltage Between EPS Control Unit Connector B (14P) Terminal No. 2 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage ?
1. YES -Go to step 14.
2. NO -Check for a blown No. 15 (40 A) fuse in the under-hood fuse/relay box or open/short in the WHT wire between the under-hood fuse/relay box and the EPS control unit.
Turn the ignition switch OFF.
Reconnect the EPS control unit connector B (14P).
Turn the ignition switch ON (II).
Measure the voltage between the EPS control unit connector B (14P) terminal No. 3 and body ground.

Fig 5: Measuring Voltage Between EPS Control Unit Connector B (14P) Terminal No. 3 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage ?
1. YES -Check for loose or poor connections at the EPS control unit. If the connections are good, substitute a known-good EPS control unit. If the symptom/indication goes away, replace the original EPS control unit and recheck.
2. NO -Repair short to ground in the BRN wire between the data link connector and the EPS control unit.