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Honda Ridgeline. Manual - part 313

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−

DTC 81:

DTC 83:

YES

18-77

TPMS Control Unit Failure

No VSP Signal

NOTE: Low battery voltage can cause this DTC. Make
sure the battery is fully charged and in good condition.

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. Turn the ignition switch OFF, then turn it ON (II)

again.

4. Check for DTCs with the HDS.

Replace the TPMS control unit (see page

18-84).

The system is OK at this time.

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. Test-drive the vehicle.

4. Check for DTCs with the HDS.

Go to step 5.

The system is OK at this time.

5. Check for DTCs with the HDS.

Go to DTC 85 troubleshooting (see page

18-78).

Go to step 6.

6. Test-drive the vehicle.

7. Check the VEHICLE SPEED in the TPMS DATA LIST

with the HDS.

Check for loose terminals and poor

connections at the TPMS control unit. If necessary,
substitute a known-good TPMS control unit
(see page 18-84), and recheck.

Go to step 8.

8. Check the speedometer.

Replace the TPMS control unit (see page

18-84).

Substitute a known-good PCM (see page 11-8),

and retest. If no codes are shown, replace the
original PCM.

Is DT C 81 indicated?

Is DT C 83 indicated?

Is DT C 85 indicated?

Is the vehicle speed indicated?

Does the speedometer r egister speed?

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−

DTC 85:

YES

Terminal

name

TPMS control

unit terminal

PCM A

terminal

YES

18-78

TPMS

DTC Troubleshooting (cont’d)

TPMS CONTROL UNIT CONNECTOR B (20P)

CAN H
(WHT)

PCM CONNECTOR A (44P)

CAN L
(RED)

F-CAN Communication Failure

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. Turn the ignition switch OFF, then turn the ignition

switch ON (II) again.

4. Wait about 5 seconds.

5. Check for DTCs with the HDS.

Go to step 6.

The system is OK at this time.

6. Test-drive the vehicle.

Go to step 10.

Go to step 7.

7. Turn the ignition switch OFF.

8. Disconnect the TPMS control unit connector B (20P).

9. Test-drive the vehicle.

Check for loose terminals and poor

connections at the TPMS control unit. If necessary,
substitute a known-good TPMS control unit
(see page 18-84), and recheck.

Turn the ignition switch OFF, and reconnect

all connectors, then check and troubleshoot the fuel
and emissions systems (see page 11-3).

10. Turn the ignition switch OFF.

11. Short the SCS line with the HDS.

12. Disconnect PCM connector A (44P).

13. Disconnect the TPMS control unit connector B (20P).

14. Check for continuity between the TPMS control unit

connector B (20P) terminals and the PCM connector
A (44P) terminals individually (see table).

CAN L

No. 10

No. 1

CAN H

No. 19

No. 36

Check for loose terminals and poor

connections at the TPMS control unit. If necessary,
substitute a known-good TPMS control unit
(see page 18-84), and recheck.

Repair open in the wire between the TPMS

control unit and the PCM.

Wire side of female terminals

Terminal side of female terminals

Is DT C 85 indicated?

Does the speedometer wor k?

Is ther e continuity?

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−

DTC 91, 93, 95, 97:

DTC

Tire location

YES

18-79

Tire Pressure Sensor

Internal Error

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. Turn the ignition switch OFF, then turn it ON (II)

again.

4. Wait about 1 minute.

5. Check for DTCs with the HDS.

NOTE: The tire pressure sensor of the appropriate
wheel is shown.

Right-front

Left-front

Right-rear

Left-rear

Replace the appropriate tire pressure sensor

(see page 18-86).

The system is OK at this time.

Is DT C 91, 93, 95 or 97 indicated?

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−

Low tire pressure and tire indicators do not
come on, and no DTCs are stored

YES

18-80

TPMS

Symptom Troubleshooting

TPMS CONTROL UNIT CONNECTOR A (14P)

GND (BLK)

IG1 (YEL)

1. Turn the ignition switch ON (II), and watch the low

pressure indicator and the tire indicators.

Go to step 2.

Go to step 4.

2. Check the pressure in all four tires.

Go to step 3.

The system is OK at this time.

3. Connect the HDS and read the pressure of the low

tires.

NOTE: If UNDEFINED is shown on sensor
transmitter status, turn the ignition switch OFF,
rotate the appropriate tire 1/4 turn, then turn the
ignition switch ON (II), and try again. If there is still
no response, repeat the procedure in the previous
sentence until a response is shown.

Check for loose terminals and poor

connections at the TPMS control unit. If necessary,
substitute a known-good TPMS control unit and
recheck.

Replace the tire pressure sensor (see page

18-86).

4. Connect the HDS and select TPMS.

Go to step 9.

Go to step 5.

5. Measure the voltage between the TPMS control

unit connector A (14P) terminals No. 3 and No. 5.

Check for loose terminals and poor

connections at the TPMS control unit. If necessary,
substitute a known-good TPMS control unit and
recheck.

Go to step 6.

6. Turn the ignition switch OFF, then disconnect the

TPMS control unit connector A (14P).

Wire side of female terminals

Do the low tir e pr essur e and indicator s come on
f or at least 2 seconds?

Is the tir e pr essur e 168 kPa ( 1.7 kgf / cm , 24 psi)
or less?

Is the tir e pr essur e shown on the HDS monitor
within 40 kPa ( 0.4 kgf / cm , 6 psi) of the actual tir e
pr essur e?

Does the HDS communicate with the T PMS
contr ol unit?

Is ther e batter y voltage?

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