D Indicator Circuit Troubleshooting

WARNING: This page is about a different car, the 2004 Honda Odyssey, 2003 Honda Odyssey, and 2002 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.

Turn the ignition switch ON (II), and watch the D indicator.
Does the D indicator come on and stay on?

YES - Go to step 2.

NO - If the indicator comes on for about 2 seconds and then goes off, it's OK. If it doesn't come on at all, go to step 13.
Make sure the HDS is not connected to the data link connector.
Turn the ignition switch OFF.
Disconnect PCM connector A (32P).
Turn the ignition switch ON (II).
Measure the voltage between PCM connector terminal A14 terminal and body ground.
Is there voltage?

YES - Repair short to power in the wire between PCM connector terminal A14 and the gauge assembly.

NO - Go to step 7.

Fig 1: Measuring Voltage Between PCM Connector Terminal A14 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch OFF.
Reconnect PCM connector A (32P).
Turn the ignition switch ON (II).
Shift to any position other than D.
Measure the voltage between PCM connector terminal D9 and body ground.
Is there voltage?

YES - Faulty PCM or gauge assembly.

NO - Check for a short to ground in the wire between PCM connector terminal D9 and the transmission range switch. If the wire is OK, check the transmission range switch.

Fig 2: Measuring Voltage Between PCM Connector Terminal D9 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch ON (II).
Shift to the D position.
Does the D indicator come on?

YES - Check for loose terminal fit in the PCM connector A14 and recheck the D indicator several times. If the problem is intermittent, substitute a known-good PCM and recheck. If the indicator then works OK every time, replace the original PCM.

NO - Go to step 14.
Turn the ignition switch OFF.
Disconnect PCM connector B (25P).
Check for continuity between PCM connector terminals B20 and body ground, and between B22 and body ground.
Is there continuity between ground and each terminal?

YES - Go to step 17.

NO - Repair open in the wire(s) between PCM connector terminal B20, B22, and ground (G101), or repair poor ground (G101).

Fig 3: Checking Continuity Between PCM Connector Terminals B20 & Body Ground, And Between B22 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch ON (II).
Measure the voltage between PCM connector terminals B1 and B22, and between B9 and B20.
Is there battery voltage?

YES - Go to step 19.

NO - Repair open or short in the wire between PCM connector terminal B1 or B9 and the PGM-FI main relay.

Fig 4: Measuring Voltage Between PCM Connector Terminals B1 & B22, And Between B9 & B20
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch OFF.
Reconnect PCM connector B (25P).
Connect the digital multimeter between PCM connector terminals A14 and B20 or B22.
Turn the ignition switch ON (II).
Is there voltage for at least 2 seconds?

YES - Check for an open in the wire between PCM connector terminal A14 and the gauge assembly. If the wire is OK, check for a faulty D indicator bulb or a faulty printed circuit board in the gauge assembly.

NO - Go to step 23.

Fig 5: Connecting Digital Multimeter Between PCM Connector Terminals A14 & B20 Or B22
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch OFF.
Disconnect PCM connector A (32P).
Check for continuity between PCM connector terminal A14 and body ground.
Is there continuity?

YES - Repair open in the wire between PCM connector terminal A14 and the gauge assembly.

NO - Check for loose terminal fit in the PCM connectors. Check the transmission range switch. If necessary, substitute a known-good PCM and recheck.

Fig 6: Checking Continuity Between PCM Connector Terminal A14 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.